MAX6388XS16D2-T中文资料
MAX6398中文资料
General DescriptionThe MAX6397/MAX6398 are small, high-voltage overvolt-age protection circuits. These devices disconnect the output load or limit the output voltage during an input overvoltage condition. These devices are ideal for appli-cations that must survive high-voltage transients such as those found in automotive and industrial applications.The MAX6397/MAX6398 monitor the input or output voltages and control an external n-channel MOSFET to isolate or limit the load from overvoltage transient energy.When the monitored input voltage is below the user-adjustable overvoltage threshold, the external n-channel MOSFET is turned on by the GATE output. In this mode,the internal charge pump fully enhances the n-channel MOSFET with a 10V gate-to-source voltage.When the input voltage exceeds the overvoltage thresh-old, the protection can disconnect the load from the input by quickly forcing the GATE output low. In some applications, disconnecting the output from the load is not desirable. In these cases, the protection circuit can be configured to act as a voltage limiter where the GATE output sawtooths to limit the voltage to the load.The MAX6397 also offers an always-on linear regulator that is capable of delivering up to 100mA of output current. This high-voltage linear regulator consumes only 37µA of quiescent current.The regulator is offered with output options of 5V, 3.3V,2.5V, or 1.8V. An open-drain, power-good output (POK)asserts when the regulator output falls below 92.5% or 87.5% of its nominal voltage.The MAX6397/MAX6398 include internal thermal-shut-down protection, disabling the external MOSF ET and linear regulator if the chip reaches overtemperature conditions. The devices operate over a wide 5.5V to 72V supply voltage range, are available in small TDFN packages, and are fully specified from -40°C to +125°C.ApplicationsAutomotive Industrial FireWire ®Notebook Computers Wall Cube Power DevicesFeatures♦5.5V to 72V Wide Supply Voltage Range♦Overvoltage Protection Controllers Allow User to Size External n-Channel MOSFETs ♦Internal Charge-Pump Circuit Ensures MOSFET Gate-to-Source Enhancement for Low R DS(ON)Performance ♦Disconnect or Limit Output from Input During Overvoltage Conditions ♦Adjustable Overvoltage Threshold ♦Thermal-Shutdown Protection♦Always-On, Low-Current (37µA) Linear Regulator Sources Up to 100mA (MAX6397)♦Fully Specified from -40°C to +125°C (T J )♦Small, Thermally Enhanced 3mm x 3mm TDFN PackageMAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V________________________________________________________________Maxim Integrated Products1Pin ConfigurationsOrdering Information19-3668; Rev 3; 1/07For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Selector Guide and Typical Operating Circuit appear at end of data sheet.FireWire is a registered trademark of Apple Computer, Inc.M A X 6397/M A X 6398Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V= 14V; C = 6000pF, C = 4.7µF, T = T = -40°C to +125°C, unless otherwise noted. Typical values are at T = T = +25°C.)(Note 1)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional oper-ation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.(All pins referenced to GND, unless otherwise noted.)IN, GATE, OUT............................................................-0.3V to +80V SHDN ..................................................................-0.3V to (IN + 0.3V)GATE to OUT.................................................................-0.3 to +20V SET, REG, POK...........................................................-0.3V to +12V Maximum Current:IN, REG...............................................................................350mA All Remaining Pins...................................................................50mAContinuous Power Dissipation (T A = +70°C)6-Pin TDFN (derate 18.2mW/°C above +70°C).............1455mW 8-Pin TDFN (derate 18.2mW/°C above +70°C).............1455mW Operating Temperature Range (T A )......................-40°C to +125°C Junction Temperature...........................................................+150°C Storage Temperature Range.................................-65°C to +150°C Lead Temperature................................................................+300°CMAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)(V IN = 14V; C GATE = 6000pF, C REG = 4.7µF, T A = T J = -40°C to +125°C, unless otherwise noted. Typical values are at T A = T J = +25°C.)(Note 1)Note 1:Specifications to -40°C are guaranteed by design and not production tested.Note 2:The MAX6397/MAX6398 power up with the external FET in off mode (V GATE = GND). The external FET turns on t START after thedevice is powered up and all input conditions are valid.Note 3:For accurate overtemperature shutdown performance, place the device in close thermal contact with the external MOSFET.Note 4:Dropout voltage is defined as V IN - V REG when V REG is 2% below the value of V REG for V IN = V REG (nominal) + 2V.Note 5:Operations beyond the thermal dissipation limit may permanently damage the device.M A X 6397/M A X 6398Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 4_______________________________________________________________________________________Typical Operating Characteristics(V IN = 14V, C REG = 4.7µF, I REG = 0, unless otherwise noted.)40608010012014016002010304050607080SUPPLY CURRENT vs. INPUT VOLTAGEINPUT VOLTAGE (V)S U P P L Y C U R R E N T (µA )SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )1007525500-259010011012013014015016017018080-50125405060708090100110120020406080SUPPLY CURRENT vs. INPUT VOLTAGEINPUT VOLTAGE (V)S U P P L Y CU R R E N T (µA )8010090120110130140-502550-25075100125SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L YC U R R E N T (µA )20302540354550040206080SHUTDOWN SUPPLY CURRENT vs. INPUT VOLTAGE (MAX6397)INPUT VOLTAGE (V)S U P P L YC U R R E N T (µA )103050700642810121416182020406080SHUTDOWN SUPPLY CURRENTvs. INPUT VOLTAGEINPUT VOLTAGE (V)S U P PL Y C U R R E N T (µA )0642810124121068141618202224GATE-DRIVE VOLTAGE vs. INPUT VOLTAGEINPUT VOLTAGE (V)V G A T E - V O U T (V )4.04.64.44.25.04.85.85.65.45.26.0-50-250255075100125UVLO THRESHOLD vs. TEMPERATUREM A X 6397-98 t o c 08TEMPERATURE (°C)V U V L O (V )SET THRESHOLD vs. TEMPERATUREM A X 6397-98 t o c 09TEMPERATURE (°C)S E T T H R E S H O L D (V )1007525500-251.2041.2081.2121.2161.2201.2241.2281.2321.2361.2401.200-50125MAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V_______________________________________________________________________________________516.016.316.216.116.516.416.916.816.716.617.0-50-25255075100125GATE-TO-OUT CLAMP VOLTAGEvs. TEMPERATUREM A X 6397-98 t o c 10TEMPERATURE (°C)G A T E -T O -O U T C L A M P V O L T A G E (V )00.40.20.80.61.21.01.41.81.62.0040608020100120140160180DROPOUT VOLTAGE vs. REG LOAD CURRENTREG LOAD CURRENT (mA)D R O P O U T V O L T A GE (V )4.905.004.955.105.055.155.20-40-10520-253550658095110125REG OUTPUT VOLTAGEvs. LOAD CURRENT AND TEMPERATURETEMPERATURE (°C)R E G O U T P U T V O L T A G E (V )4.04.64.44.24.85.05.21601204080200240280320360400MAXIMUM REG OUTPUT VOLTAGE vs. LOAD CURRENT AND TEMPERATURELOAD CURRENT (mA)R E G O U T P U T V O L T A G E (V )POWER-SUPPLY REJECTION RATIOvs. FREQUENCYFREQUENCY (Hz)P S R R (d B )1M 100k 10k 1k 100-60-50-40-30-20-100-701010M4ms/divSTARTUP WAVEFORM(R LOAD = 100Ω, C IN = 10µF, C OUT = 10µF)V IN 10V/divMAX6397-98 toc16V GATE 10V/div V OUT 10V/div I OUT200mA/div400µs/divSTARTUP WAVEFORM FROM SHUTDOWN(C IN = 10µF, C OUT = 10µF)V 2V/divV GATE 10V/divV OUT 10V/div I OUT200mA/divR LOAD = 100ΩTypical Operating Characteristics (continued)(V IN = 14V, C REG = 4.7µF, I REG = 0, unless otherwise noted.)GATE-DRIVE VOLTAGE vs. TEMPERATUREM A X 6397-98 t o c 14TEMPERATURE (°C)G A T E -D R I V E V O L T A G E (V )1007525500-2510.45510.46010.46510.47010.47510.48010.48510.49010.49510.50010.450-50125M A X 6397/M A X 6398Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 6_______________________________________________________________________________________Typical Operating Characteristics (continued)(V IN = 14V, C REG = 4.7µF, I REG = 0, unless otherwise noted.)200µs/divOVERVOLTAGE SWITCH FAULTV IN 20V/divV GATE 20V/div V OUT 20V/div V REG 5V/divV OV = 30V1ms/divVOLTAGE LIMIT FAULTV IN 20V/divV GATE 20V/divV OUT 20V/div V REG 5V/divV OV = 30V400µs/divTRANSIENT RESPONSEV IN 10V/divV REG100mV/divC REG = 10µF I REG = 10mA1ms/divREG LOAD-TRANSIENT RESPONSEV REGAC-COUPLED 500mV/divI REG100mA/divC REG = 10µF1ms/divREGULATOR STARTUP WAVEFORMV IN 10V/divV POK 2V/divV REG 2V/divI REG = 10mA100µs/divREGULATOR POK ASSERTIONV REG 2V/divI REG200mA/div V POK 2V/divI REG = 00V0V0ADetailed Description The MAX6397/MAX6398 are ultra-small, low-current, high-voltage protection circuits for automotive applica-tions that must survive load dump and high-voltage transient conditions. These devices monitor the input/ output voltages and control an external n-channel MOSF ET to isolate the load or to regulate the output voltage from overvoltage transient energy. The con-troller allows system designers to size the external MOSFET to their load current and board size.The MAX6397/MAX6398 drive the MOSF ET’s gate high when the monitored input voltage is below the adjustable overvoltage threshold. An internal charge-pump circuit provides a 5V to 10V gate-to-source drive (see the Typical Operating Characteristics) to ensure low input-to-load voltage drops in normal operating modes. When the input voltage rises above the user-adjusted overvoltage threshold, GATE pulls to OUT, turning off the MOSFET.The MAX6397/MAX6398 are configurable to operate as overvoltage protection switches or as closed-looped volt-age limiters. In overvoltage protection switch mode, theinput voltage is monitored. When an overvoltage condi-tion occurs at IN, GATE pulls low, disconnecting the loadfrom the power source, and then slowly enhances upon removal of the overvoltage condition. In overvoltagelimit mode, the output voltage is monitored and theMAX6397/MAX6398 regulate the source of the external MOSFET at the adjusted overvoltage threshold, allowing devices within the system to continue operating during an overvoltage condition.The MAX6397/MAX6398 undervoltage lockout (UVLO) function disables the devices as long as the input remains below the 5V (typ) UVLO turn-on threshold. TheMAX6397/MAX6398 have an active-low SHDN input toturn off the external MOSFET, disconnecting the load and reducing power consumption. After power is applied and SHDN is driven above its logic-high voltage, there is a100µs delay before GATE enhancement commences.MAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V _______________________________________________________________________________________7M A X 6397/M A X 6398The MAX6397 integrates a high-input-voltage, low-qui-escent-current linear regulator in addition to an over-voltage protector circuit. The linear regulator remains enabled at all times to power low-current “always-on”applications (independent of the state of the external MOSF ET). The regulator is offered with several stan-dard output voltage options (5V, 3.3V, 2.5V, or 1.8V).An open-drain power-good output notifies the system if the regulator output falls to 92.5% or 87.5% of its nomi-nal voltage. The MAX6397’s REG output operates inde-pendently of the SHDN logic input.The MAX6397/MAX6398 include internal thermal-shut-down protection, disabling the external MOSF ET and linear regulator if the chip reaches overtemperature conditions.Linear Regulator (MAX6397 Only)The MAX6397 is available with 5.0V, 3.3V, 2.5V, and 1.8V factory-set output voltages. Each regulator sources up to 100mA and includes a current limit of 230mA. The linear regulator operates in an always-on condition regardless of the SHDN logic. For fully specified operation, V IN must be greater than 6.5V for the MAX6397L/M (5V regulator output). The actual output current may be limited by the operating condition and package power dissipation.Power-OK OutputPOK is an open-drain output that goes low when REG falls to 92.5% or 87.5% (see the Selector Guide ) of its nominal output voltage. To obtain a logic-level output,connect a pullup resistor from POK to REG or another system voltage. Use a resistor in the 100k Ωrange to minimize current consumption. POK provides a valid logic-output level down to V IN = 1.5V.GATE VoltageThe MAX6397/MAX6398 use a high-efficiency charge pump to generate the GATE voltage. Upon V IN exceed-ing the 5V (typ) UVLO threshold, GATE enhances 10V above IN (for V IN ≥14V) with a 75µA pullup current. An overvoltage condition occurs when the voltage at SET pulls above its 1.215V threshold. When the threshold is crossed, GATE falls to OUT within 100ns with a 100mA (typ) pulldown current. The MAX6397/MAX6398 include an internal clamp to OUT that ensures GATE is limited to 18V (max) above OUT to prevent gate-to-source damage to the external FET.The GATE cycle during overvoltage limit and overvolt-age switch modes are quite similar but have distinct characteristics. In overvoltage switch mode (Figure 2a),GATE is enhanced to V IN + 10V while the monitored IN voltage remains below the overvoltage fault threshold (SET < 1.215V). When an overvoltage fault occurs (SET ≥1.215V), GATE is pulled one diode below OUT, turn-ing off the external F ET and disconnecting the load from the input. GATE remains low (FET off) as long as V IN is above the overvoltage fault threshold. As V IN falls back below the overvoltage fault threshold (-5% hys-teresis) GATE is again enhanced to V IN + 10V.In overvoltage limit mode (Figure 2b), GATE is enhanced to V IN + 10V. While the monitored OUT voltage remains below the overvoltage fault threshold (SET < 1.215V).When an overvoltage fault occurs (SET ≥1.215V),GATE is pulled low one diode drop below OUT until OUT drops 5% below the overvoltage fault threshold.GATE is then turned back on until OUT again reaches the overvoltage fault threshold and GATE is again turned off.Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 8_______________________________________________________________________________________GATE cycles on-off-on-off-on in a sawtooth waveform until OUT remains below the overvoltage fault threshold and GATE remains constantly on (V IN + 10V). The over-voltage limiter’s sawtooth GATE output operates the MOSFET in a switched-linear mode while the input volt-age remains above the overvoltage fault threshold. The sawtooth frequency depends on the load capacitance,load current, and MOSFET turn-on time (GATE charge current and GATE capacitance).GATE goes high when the following startup conditions are met: V IN is above the UVLO threshold, SHDN is high, an overvoltage fault is not present and the device is not in thermal shutdown.Overvoltage MonitoringWhen operating in overvoltage mode, the MAX6397/MAX6398 feedback path (F igure 3) consists of IN,SET’s internal comparator, the internal gate charge pump, and the external n-channel MOSFET resulting in a switch-on/off function. When the programmed over-voltage threshold is tripped, the internal fast compara-tor turns off the external MOSFET, pulling GATE to OUT within t OV and disconnecting the power source from the load. When IN decreases below the adjusted over-voltage threshold, the MAX6397/MAX6398 slowly enhance GATE above OUT, reconnecting the load to the power source.Overvoltage LimiterWhen operating in overvoltage limiter mode, the MAX6397/MAX6398 feedback path (F igure 4) consists of OUT, SET’s internal comparator, the internal gate charge pump and the external n-channel MOSF ET,which results in the external MOSF ET operating as a voltage regulator.During normal operation, GATE is enhanced 10V above OUT. The external MOSFET source voltage is monitored through a resistor-divider between OUT and SET. When OUT rises above the adjusted overvoltage threshold, an internal comparator sinks the charge-pump current, dis-charging the external GATE, regulating OUT at the set overvoltage threshold. OUT remains active during the overvoltage transients and the MOSFET continues to con-duct during the overvoltage event, operating in switched-linear mode.MAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V_______________________________________________________________________________________9V GATE 10V/divV OUT 10V/divV IN 10V/div10ms/divV GATE 10V/divV OUT 10V/divV IN 10V/div4ms/divM A X 6397/M A X 6398As the transient begins decreasing, OUT fall time will depend on the MOSF ET’s GATE charge, the internal charge-pump current, the output load, and the tank capacitor at OUT.For fast-rising transients and very large-sized MOSFETs,add an additional external bypass capacitor from GATE to GND to reduce the effect of the fast-rising voltages at IN. The external capacitor acts as a voltage-divider working against the MOSF ETs’ drain-to-gate capaci-tance. For a 6000pF C gd , a 0.1µF capacitor at GATE will reduce the impact of the fast-rising V IN input.Caution must be exercised when operating the MAX6397/MAX6398 in voltage-limiting mode for long durations. If the V IN is a DC voltage greater than the MOSFET’s maximum gate voltage, the FET will dissipate power continuously. To prevent damage to the external MOSFET, proper heatsinking should be implemented.Applications InformationLoad DumpMost automotive applications run off a multicell, 12V lead-acid battery with a nominal voltage that swings between 9V and 16V (depending on load current,charging status, temperature, battery age, etc.). The battery voltage is distributed throughout the automobile and is locally regulated down to voltages required by the different system modules. Load dump occurs when the alternator is charging the battery and the battery becomes disconnected. Power in the alternator (essen-tially an inductor) flows into the distributed power sys-tem and elevates the voltage seen at each module. The voltage spikes have rise times typically greater than 5ms and decays within several hundred milliseconds but can extend out to 1s or more depending on thecharacteristics of the charging system (F igure 5).These transients are capable of destroying semicon-ductors on the first ‘fault event.’Setting Overvoltage ThresholdsSET provides an accurate means to set the overvoltage level for the MAX6397/MAX6398. Use a resistor-divider to set the desired overvoltage condition (Figure 6). SET has a rising 1.215V threshold with a 5% falling hysteresis.Begin by selecting the total end-to-end resistance,R TOTAL = R1 + R2. Choose R TOTAL to yield a total cur-rent equivalent to a minimum 100 x I SET (SET’s input bias current) at the desired overvoltage threshold.For example:With an overvoltage threshold set to 20V:R TOTAL < 20V/(100 x I SET )where I SET is SET’s 50nA input bias current.R TOTAL < 4M ΩUse the following formula to calculate R2:where V TH is the 1.215V SET rising threshold and V OV is the overvoltage threshold.R2 = 243k Ω, use a 240k Ωstandard resistor.R TOTAL = R2 + R1, where R1 = 3.76M Ω.Use a 3.79M Ωstandard resistor.A lower value for total resistance dissipates morepower but provides slightly better accuracy.Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 10______________________________________________________________________________________Reverse-Battery ProtectionUse a diode or p-channel MOSF ET to protect the MAX6397/MAX6398 during a reverse-battery insertion (Figures 7a, 7b). Low p-channel MOSFET on-resistance of 30m Ωor less yields a forward-voltage drop of only a few millivolts (versus hundreds of millivolts for a diode,Figure 7a) thus improving efficiency.Connecting a positive battery voltage to the drain of Q1(F igure 7b) produces forward bias in its body diode,which clamps the source voltage one diode drop below the drain voltage. When the source voltage exceeds Q1’s threshold voltage, Q1 turns on. Once the F ET is on, the battery is fully connected to the system and can deliver power to the device and the load.An incorrectly inserted battery reverse-biases the F ET’s body diode. The gate remains at the ground potential.The FET remains off and disconnects the reversed bat-tery from the system. The zener diode and resistor com-bination prevent damage to the p-channel MOSF ET during an overvoltage condition.MAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V______________________________________________________________________________________11M A X 6397/M A X 6398REG Capacitor Selection for StabilityFor stable operation over the full temperature range and with load currents up to 100mA, use ceramic capacitor values greater than 4.7µF. Large output capacitors help reduce noise, improve load-transient response, and power-supply rejection at REG. Note that some ceramic dielectrics exhibit large capacitance and ESR variation with temperature. At lower temperatures, it may be nec-essary to increase capacitance.Under normal conditions, use a 10µF capacitor at rger input capacitor values and lower ESR provide bet-ter supply-noise rejection and line-transient response.Inrush/Slew-Rate ControlInrush current control can be implemented by placing a capacitor at GATE (F igure 8) to slowly ramp up the GATE, thus limiting the inrush current and controlling GATE’s slew rate during initial turn-on. The inrush cur-rent can be approximated using the following formula:where I GATE is GATE’s 75µA sourcing current, I LOAD is the load current at startup, and C OUT is the output capacitor.Input Transients ClampingWhen the external MOSFET is turned off during an over-voltage occurrence, stray inductance in the power path may cause voltage ringing exceeding the MAX6397/MAX6398 absolute maximum input (IN) supply rating.The following techniques are recommended to reduce the effect of transients:•Minimize stray inductance in the power path usingwide traces, and minimize loop area including the power traces and the return ground path.•Add a zener diode or transient voltage suppressor(TVS) rated below the IN absolute maximum rating (Figure 9).Add a resistor in series with IN to limit transient currentgoing into the input for the MAX6398 only.Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 12______________________________________________________________________________________Figure 8. MAX6397/MAX6398 Controlling GATE Inrush CurrentFigure 9. Protecting the MAX6397/MAX6398 Input from High-Voltage TransientsMOSFET SelectionSelect external MOSF ETs according to the application current level. The MOSF ET’s on-resistance (R DS(ON))should be chosen low enough to have minimum voltage drop at full load to limit the MOSFET power dissipation.Determine the device power rating to accommodate an overvoltage fault when operating the MAX6397/MAX6398 in overvoltage limit mode.During normal operation, the external MOSFETs dissipate little power. The power dissipated in normal operation is:P Q1 = I LOAD 2x R DS(ON).The most power dissipation will occur during a pro-longed overvoltage event when operating the MAX6397/MAX6398 in voltage limiter mode, resulting in high power dissipated in Q1 (F igure 10) where the power dissipated across Q1 is:P Q1= V Q1x I LOADwhere V Q1is the voltage across the MOSF ET’s drain and source.Thermal ShutdownThe MAX6397/MAX6398 thermal-shutdown feature shuts off the linear regulator output, REG, and GATE if it exceeds the maximum allowable thermal dissipation.Thermal shutdown also monitors the PC board tempera-ture of the external nF ET when the devices sit on thesame thermal island. Good thermal contact between the MAX6397/MAX6398 and the external nF ET is essential for the thermal-shutdown feature to operate effectively.Place the nFET as close as possible to OUT.When the junction temperature exceeds T J = +150°C,the thermal sensor signals the shutdown logic, turning off REG’s internal pass transistor and the GATE output,allowing the device to cool. The thermal sensor turns the pass transistor and GATE on again after the IC’s junction temperature cools by 20°C. Thermal-overload protection is designed to protect the MAX6397/MAX6398 and the external MOSFET in the event of cur-rent-limit fault conditions. For continuous operation, do not exceed the absolute maximum junction-tempera-ture rating of T J = +150°C.Thermal ShutdownOvervoltage Limiter ModeWhen operating the MAX6397/MAX6398 in overvoltage limit mode for a prolonged period of time, a thermal shutdown is possible due to device self-heating. The thermal shutdown is dependent on a number of differ-ent factors:•The device’s ambient temperature (T A )•The output capacitor (C OUT )•The output load current (I OUT )•The overvoltage threshold limit (V OV )•The overvoltage waveform period (t OVP )•The power dissipated across the package (P DISS )MAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V______________________________________________________________________________________13M A X 6397/M A X 6398When OUT exceeds the adjusted overvoltage threshold,an internal GATE pulldown current is enabled until OUT drops by 5%. The capacitance at OUT is discharged by the internal current sink and the external OUT load cur-rent. The discharge time (∆t1) is approximately:where V OV is the adjusted overvoltage threshold, I OUT is the external load current and I GATEPD is the GATE’s internal 100mA (typ) pulldown current.When OUT falls 5% below the overvoltage threshold point, the internal current sink is disabled and the MAX6397/MAX6398’s internal charge pump begins recharging the external GATE voltage. The OUT volt-age continues to drop due to the external OUT load current until the MOSF ET gate is recharged. The time needed to recharge GATE and re-enhance the external nFET is approximately:where C ISS is the MOSFET’s input capacitance, V GS(TH)is the MOSFET’s gate-to-source threshold voltage, V F is the internal clamp diode forward voltage (V F = 1.5V typ),and I GATE is the MAX6397/MAX6398 charge-pump cur-rent (75µA typ).During ∆t2, C OUT loses charge through the output load.The voltage across C OUT (∆V2) decreases until the MOSF ET reaches its V GS(TH) threshold and can be approximated using the following formula:Once the MOSFET V GS (TH ) is obtained, the slope of the output voltage rise is determined by the MOSF ET Q G charge through the internal charge pump with respect to the drain potential. The time for the OUT voltage to rise again to the overvoltage threshold can be approxi-mated using the following formula:where ∆V OUT = ( V OV x 0.05) + ∆V2.The total period of the overvoltage waveform can be summed up as follows:t OVP = ∆t1 + ∆t2 + ∆t3The MAX6397/MAX6398 dissipate the most power dur-ing an overvoltage event when I OUT = 0 (C OUT is dis-charged only by the internal current sink). The maximum power dissipation can be approximated using the follow-ing equation:The die temperature (T J ) increase is related to θJC (8.3°C/W and 8.5°C/W for the MAX6397 and MAX6398,respectively) of the package when mounted correctly with a strong thermal contact to the circuit board. The MAX6397/MAX6398 thermal shutdown is governed by the equation:T J = T A + P DISS x (θJC + θCA) < 170°C (typical thermal-shutdown temperature)For the MAX6397, the power dissipation of the internal linear regulator must be added to the overvoltage pro-tection circuit power dissipation to calculate the die temperature. The linear regulator power dissipation is calculated using the following equation:P REG = (V IN – V REG ) (I REG )F or example, using an IRF R3410 100V n-channel MOSF ET, F igure 12 illustrates the junction temperature vs. output capacitor with I OUT = 0, T A = +125°C, V OV < 16V,V F = 1.5V, I GATE = 75mA, and I GATEPD =100mA. Figure 12 shows the relationship between output capacitance versus die temperature for the conditionslisted above.Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 14______________________________________________________________________________________。
MAX809SN160T1资料
MAX809 Series,MAX810 SeriesVery Low Supply Current 3-Pin Microprocessor Reset MonitorsThe MAX809 and MAX810 are cost–effective system supervisor circuits designed to monitor V CC in digital systems and provide a reset signal to the host processor when necessary. No external components are required.The reset output is driven active within 10 µsec of V CC falling through the reset voltage threshold. Reset is maintained active for a minimum of 140 msec after V CC rises above the reset threshold. The MAX810 has an active–high RESET output while the MAX809 has an active–low RESET output. The output of the MAX809 is guaranteed valid down to V CC = 1.0 V. Both devices are available in a SOT–23 package.The MAX809/810 are optimized to reject fast transient glitches on the V CC line. Low supply current of 1.0 µA (V CC= 3.2 V) makes these devices suitable for battery powered applications.Features•Precision V CC Monitor for 2.5 V, 3.0 V, 3.3 V, and 5.0 V Supplies •Precision Monitoring V oltages from 1.6 V to 4.9 V Availablein 100 mV Steps•140 msec Guaranteed Minimum RESET Output Duration •RESET Output Guaranteed to V CC = 1.0 V•Low Supply Current•V CC Transient Immunity•Small SOT–23 Package•No External Components•Wide Operating Temperature: –40°C to 105°CTypical Applications•Computers•Embedded Systems•Battery Powered Equipment•Critical µP Power Supply MonitoringV CCFigure 1. Typical Application DiagramDevice Package ShippingORDERING INFORMATIONMAX809xTR SOT–233000 Tape/Reel MAX809SNxxxT1SOT–233000 Tape/Reel NOTE:*SOT–23 is equivalent to JEDEC (TO–236) **RESET is for MAX809***RESET is for MAX810SOT–23(TO–236)CASE 318PIN CONFIGURATION312V CCGNDRESET**SOT–23*(Top View)xx, xxx= Specific Device Codem= Date Codey= Yearw= Work WeekMARKINGDIAGRAMS32xxxm1(RESET)***MAX810xTR SOT–233000 Tape/ReelSee general marking information in the device marking section on page 8 of this data sheet.DEVICE MARKING INFORMATION NOTE: The “x” and “xxx” denotes a suffix for V cc voltage threshold options – see page 8 for more details.32xxyw1See specific device markinginformation on page 8.PIN DESCRIPTIONABSOLUTE MAXIMUM RATINGS* (Note 1)1.This device series contains ESD protection and exceeds the following tests:Human Body Model 2000 V per MIL–STD–883, Method 3015. Machine Model Method 350 V.2.The maximum package power dissipation limit must not be exceeded.P D +T J(max)*T Aq JAwith T J(max) = 150°C ELECTRICAL CHARACTERISTICS T A = –40°C to +105°C unless otherwise noted. Typical values are at T A = +25°C. (Note 3)The following data is given for MAX809 threshold levels: 1.60 V, 2.32 V, 2.93 V, 4.63 V and 4.90 V.AELECTRICAL CHARACTERISTICS(continued) T A = –40°C to +105°C unless otherwise noted. Typical values are at T A = +25°C. (Note 4) The following data is given for MAX809 threshold levels: 1.60 V, 2.32 V, 2.93 V, 4.63 V and 4.90 V.A5.Contact your ON Semiconductor sales representative for other threshold voltage options.ELECTRICAL CHARACTERISTICS (V CC = Full Range, T A = –40°C to +85°C unless otherwise noted. Typical values are at T A = +25°C, V CC = 5.0 V for L/M/J, 3.3 V for T/S, 3.0 V for R) (Note 6) The following data is given for MAX809 threshold levels: 2.63 V, 3.08 V, 4.00 V and 4.38 V; MAX810 threshold levels: 2.63 V, 2.93 V, 3.08 V, 4.38 V and 4.63 V.AAPPLICATIONS INFORMATIONV CC Transient RejectionThe MAX809 provides accurate V CC monitoring and reset timing during power–up, power–down, and brownout/sag conditions, and rejects negative–going transients (glitches)on the power supply line. Figure 2 shows the maximum transient duration vs. maximum negative excursion (overdrive) for glitch rejection. Any combination of duration and overdrive which lies under the curve will not generate a reset signal. Combinations above the curve are detected as a brownout or power–down. Typically, transient that goes 100 mV below the reset threshold and lasts 5 µs or less will not cause a reset pulse. Transient immunity can be improved by adding a capacitor in close proximity to the V CC pin of the MAX809.Figure 2. Maximum Transient Duration vs. Overdrivefor Glitch Rejection at 25°CV CC10.010080110.060.0M A X I M U M T R A N S I E N T D U R A T I O N (µs e c )20120RESET COMPARATOR OVERDRIVE (mV)160.06040RESET Signal Integrity During Power–DownThe MAX809 RESET output is valid to V CC = 1.0 V .Below this voltage the output becomes an “open circuit” and does not sink current. This means CMOS logic inputs to the µP will be floating at an undetermined voltage. Most digital systems are completely shutdown well above this voltage.However, in situations where RESET must be maintainedvalid to V CC = 0 V , a pull–down resistor must be connected from RESET to ground to discharge stray capacitances and hold the output low (Figure 3). This resistor value, though not critical, should be chosen such that it does not appreciably load RESET under normal operation (100 k W will be suitable for most applications).Figure 3. Ensuring RESET Valid to V CC = 0 VProcessors With Bidirectional I/O PinsSome µP’s (such as Motorola 68HC11) have bi–directional reset pins. Depending on the current drive capability of the processor pin, an indeterminate logic level may result if there is a logic conflict. This can be avoided by adding a 4.7 k W resistor in series with the output of the MAX809 (Figure 4). If there are other components in the system which require a reset signal, they should be buffered so as not to load the reset line. If the other components are required to follow the reset I/O of the µP, the buffer should be connected as shown with the solid line.Figure 4. Interfacing to Bidirectional Reset I/OBUFFERED RESETThe following data is given for MAX809 threshold levels: 1.60 V, 2.32 V, 2.93 V, 4.63 V and 4.90 V.1.10S U P P L Y C U R R E N T I N M I C R O A M PTEMPERATURE (°C)N O R M A L I Z E D P O W E R –U P R E S E T T I M E O U T–404020–206080Figure 7. Normalized Power–Up Reset vs.Temperature Figure 8. Normalized Reset Threshold Voltagevs. TemperatureTEMPERATURE (°C)–404020–206080The following data is given for MAX809 threshold levels: 2.63 V, 3.08 V, 4.00 V and 4.38 V;MAX810 threshold levels: 2.63 V, 2.93 V, 3.08 V, 4.38 V and 4.63 V.S U P P L Y C U R R E N T ( A )m 040206080100P O W E R -D O W N R E S E T D E L A Y ( s e c )m TEMPERATURE (C °)-40-200204085Figure 13. Power–Up Reset Timeout vs.Temperature TEMPERATURE (C °)-40-20020406085225235230240245250P O W E R -U P R E S E T T I M E O U T (m s e c )60Figure 14. Normalized Reset Threshold vs.TemperatureTAPING FORMComponent Taping Orientation for 3L SOT–23 (JEDEC–236) Devices(Mark Right Side Up)SOT–23Package Carrier Width (W)Pitch (P)Part Per Full ReelReel Size 8 mm4 mm30007 inchesTape & Reel Specifications TableMARKING AND THRESHOLD INFORMATIONm = Date Codey = Yearw = Work WeekPACKAGE DIMENSIONSSOT–23PLASTIC PACKAGE (TO–236)CASE 318–08ISSUE AHNOTES:1.DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982.2.CONTROLLING DIMENSION: INCH.3.MAXIMUM LEAD THICKNESS INCLUDES LEADNotesNotes11ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others.SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. PUBLICATION ORDERING INFORMATIONJAPAN: ON Semiconductor, Japan Customer Focus Center4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031Phone: 81–3–5740–2700Email: r14525@。
MAX1682-MAX1683中文资料
ELECTRICAL CHARACTERISTICS
(VIN = +5.0V, capacitor values from Table 2, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER No-Load Supply Current Supply Voltage Range Minimum Operating Voltage Oscillator Frequency Output Resistance Voltage Conversion Efficiency TA = +25°C RLOAD = 10kΩ (Note 2) TA = +25°C IOUT = 5mA IOUT = 0mA, TA = +25°C MAX1682 MAX1683 TA = +25°C TA = 0°C to +85°C 98 99.9 8.4 24.5 CONDITIONS MAX1682 MAX1683 TA = +25°C TA = 0°C to +85°C 2.0 2.1 MIN TYP 110 230 1.7 1.8 1 12 35 20 15.6 45.5 50 65 MAX 145 310 5.5 5.5 UNITS µA V V kHz Ω %
OUTPUT RESISTANCE vs. SUPPLY VOLTAGE
80 OUTPUT RESISTANCE (Ω) 70 60 50 40 30 20 10 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 VIN (V) MAX1683, C1 = C2 = 10µF MAX1682, C1 = C2 = 10µF MAX1683, C1 = C2 = 3.3µF
2N6388;中文规格书,Datasheet资料
2N6388SILICON NPN POWER DARLINGTON TRANSISTORsSTMicroelectronics PREFERRED SALESTYPEs NPN DARLINGTONs HIGH CURRENT CAPABILITY sINTEGRATED ANTIPARALLEL COLLECTOR-EMITTER DIODEDESCRIPTION The device is a silicon Epitaxial-Base NPN power transistor in monolithic Darlington configuration mounted in Jedec TO-220 plastic package.It is inteded for use in low and medium frequency power applications.®August 2000ABSOLUTE MAXIMUM RATINGS1/5o l et e Pr o du c t(s ) -THERMAL DATAELECTRICAL CHARACTERISTICS (T case = 25 oC unless otherwise specified)∗∗Pulsed: Pulse duration = 100ms non repetitive pulse.2N6388OSafe Operating AreaCollector Emitter Saturation VoltageCollector Emitter Saturation Voltage DC Current GainDC TransconductanceSaturated Switching Characteristics2N6388O b s o l et e Pr o du c t(s ) - O bs o l e t eP ro d u ct(s )2N6388Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.The ST logo is a trademark of STMicroelectronics© 2000 STMicroelectronics – Printed in Italy – All Rights ReservedSTMicroelectronics GROUP OF COMPANIESAustralia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A.2N6388O b s o l et e Pr o du c t(s ) - O bs o l e t eP ro d u ct(s )分销商库存信息: STM2N6388。
MAX6358LRUK-T中文资料
Note: Standard versions are shown in bold and have a required order increment of 2500 pieces. Sample stock is generally held on the standard versions only. The required order increment for nonstandard versions is 10,000 pieces. Contact factory for availability.
__________Voltage Threshold Levels
PART NO. SUFFIX (_ _) LT LS LR MT MS MR TY SY VCC5 NOMINAL VOLTAGE THRESHOLD (V) 4.63 4.63 4.63 4.38 4.38 4.38 3.08 2.93 VCC3 NOMINAL VOLTAGE THRESHOLD (V) 3.08 2.93 2.63 3.08 2.93 2.63 2.19 2.19
Pin Configurations appear at end of data sheet. Selector Guide appears at end of data sheet.
1
________________________________________________________________ Maxim Integrated Products
ELECTRICAL CHARACTERISTICS
(VCC3 = VCC5 = +1.2V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Supply Voltage Range (Note 2) Supply Current SYMBOL VCC ICC5 + ICC3 CONDITIONS TA = 0°C to +70°C TA = -40°C to +85°C VCC5 = 5.5V, VCC3 = 3.6V, all I/O pins open MAX63_ _L_ MAX63_ _M_ VCC5 Threshold (Note 3) VTH5 MAX63_ _T_ MAX63_ _S_ MAX63_ _ _T MAX63_ _ _S VCC3 Threshold (Note 3) VTH3 MAX63_ _ _R MAX63_ _ _Y Reset Threshold Tempco Reset Threshold Hysteresis VCC to Reset Delay Reset Timeout Period tRP 100mV overdrive VCC5 > VTH5(MAX), VCC3 > VTH3(MAX) VCC5 or VCC3 ≥ 2.7V, ISINK = 1.2mA VCC5 or VCC3 ≥ 4.5V, ISINK = 3.2mA RESET Output Voltage Low VOL VCC5 or VCC3 < 1V, ISINK = 50µA, TA = 0°C to +70°C VCC5 or VCC3 < 1.2V, ISINK = 50µA 100 ∆VTH/°C TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C TA = +25°C TA = -40°C to +85°C 4.54 4.5 4.3 4.25 3.03 3.00 2.88 2.85 3.03 3.00 2.88 2.85 2.58 2.55 2.16 2.13 20 VTH/500 20 180 280 0.3 0.4 0.3 0.3 V V 2.19 2.63 2.93 3.08 2.93 3.08 4.38 MIN 1.0 1.2 20 4.63 TYP MAX 5.5 5.5 50 4.72 4.75 4.46 4.50 3.14 3.15 2.98 3.00 3.14 3.15 2.98 3.00 2.68 2.70 2.22 2.25 ppm/°C V µs ms V V UNITS V µA
CDX8000-TP系统用户手册(适用于TP832、848、880、16120、16128系列)
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MAX6342SUT-T中文资料
MAX6342–MAX6345
6-Pin µP Reset Circuit with Power-Fail Comparator
ABSOLUTE MAXIMUM RATINGS
VCC to GND ..............................................................-0.3V to +6V RESET, RESET
元器件交易网
19-1568; Rev 2; 12/05
MAX6342–MAX6345
6-Pin µP Reset Circuit with Power-Fail Comparator
General Description
The MAX6342–MAX6345 family of microprocessor (µP) supervisory circuits monitors power supplies in digital systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at .
元器件交易网
Selector Guide 1
SUFFIX
L
M T S R Z
RESET THRESHOLD (V) 4.63 4.38 3.08 2.93 2.63 2.33
MAX6387XS18D7中文资料
MAX6387XS18D7中⽂资料General Description The MAX6381–MAX6390 microprocessor (µP) supervisory circuits monitor power-supply voltages from +1.8V to +5.0V while consuming only 3µA of supply current at +1.8V. Whenever V CC falls below the factory-set reset thresholds, the reset output asserts and remains assert-ed for a minimum reset timeout period after V CC rises above the reset threshold. Reset thresholds are available from +1.58V to +4.63V, in approximately 100mV incre-ments. Seven minimum reset timeout delays ranging from 1ms to 1200ms are available.The MAX6381/MAX6384/MAX6387 have a push-pull active-low reset output. The MAX6382/MAX6385/ MAX6388 have a push-pull active-high reset output, and the MAX6383/MAX6386/MAX6389/MAX6390 have an open-drain active-low reset output. The MAX6384/MAX6385/MAX6386 also feature a debounced manual reset input (with internal pullup resistor). The MAX6387/MAX6388/MAX6389 have an auxiliary input for monitoring a second voltage. The MAX6390 offers a manual reset input with a longer V CC reset timeout period (1120ms or 1200ms) and a shorter manual reset timeout (140ms or 150ms). The MAX6381/MAX6382/MAX6383 are available in 3-pin SC70 and6-pinµDFN packages and the MAX6384–MAX6390 are available in 4-pin SC70 andFeaturesFactory-Set Reset Threshold Voltages Rangingfrom +1.58V to +4.63V in Approximately 100mVIncrements±2.5% Reset Threshold Accuracy OverTemperature (-40°C to +125°C)Seven Reset Timeout Periods Available: 1ms,20ms, 140ms, 280ms, 560ms, 1120ms,1200ms (min)3 Reset Output OptionsActive-Low Push-PullActive-High Push-PullActive-Low Open-DrainReset Output State Guaranteed ValidDown to V CC= 1VManual Reset Input (MAX6384/MAX6385/MAX6386)Auxiliary RESET IN(MAX6387/MAX6388/MAX6389)V CC Reset Timeout (1120ms or 1200ms)/ManualReset Timeout (140ms or 150ms) (MAX6390)Negative-Going V CC Transient ImmunityLow Power Consumption of 6µA at +3.6Vand 3µA at +1.8VPin Compatible withMAX809/MAX810/MAX803/MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348,and MAX6711/MAX6712/MAX6713Tiny 3-Pin/4-Pin SC70 and 6-Pin µDFN PackagesMAX6381–MAX6390 SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset Circuits ________________________________________________________________Maxim Integrated Products1Pin Configurations19-1839; Rev 4; 4/07Ordering InformationOrdering Information continued at end of data sheet.Typi cal Operati ng Ci rcui t appears at end of data sheet.Selector Guide appears at end of data sheet.after "XR", "XS", or "LT." Insert reset timeout delay (see ResetTimeout Delay table) after "D" to complete the part number.Sample stock is generally held on standard versions only (seeStandard Versions table). Standard versions have an orderincrement requirement of 2500 pieces. Nonstandard versionshave an order increment requirement of 10,000 pieces.Contact factory for availability of nonstandard versions.+Denotes a lead-free package.For pricing, delivery, and ordering information,please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at /doc/5700977901f69e3143329415.html .ComputersControllersIntelligent InstrumentsCritical µP and µCPower MonitoringPortable/Battery-Powered EquipmentDual Voltage SystemsM A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset CircuitsABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = full range, T A = -40°C to +125°C, unless otherwise specified. Typical values are at T A = +25°C.) (Note 1)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V CC to GND..........................................................-0.3V to +6.0V RESET Open-Drain Output....................................-0.3V to +6.0V RESET , RESET (push-pull output)..............-0.3V to (V CC + 0.3V)MR , RESET IN.............................................-0.3V to (V CC + 0.3V)Input Current (V CC ).............................................................20mA Output Current (all pins).....................................................20mAContinuous Power Dissipation (T A = +70°C)3-Pin SC70 (derate 2.9mW/°C above +70°C)..............235mW 4-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW 6-Pin µDFN (derate 2.1mW/°C above +70°C)..........167.7mW Operating Temperature Range .........................-40°C to+125°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering,10s).................................+300°CMAX6381–MAX6390SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset Circuits_______________________________________________________________________________________3M A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits4______________________________________________________________________________________Typical Operating Characteristics(T A = +25°C, unless otherwise noted.)215436789-40-105-25203550658095110125SUPPLY CURRENT vs. TEMPERATURE(NO LOAD)TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )25292735333137394143-40-105-25203550658095110125POWER-DOWN RESET DELAYvs. TEMPERATURETEMPERATURE (°C)P O W E R -D O W N R E S E T D E L A Y (µs )0.940.980.961.021.001.061.041.08-40-10520-253550658095110125 NORMALIZED POWER-UP RESET TIMEOUTvs. TEMPERATUREM A X 6381/90 t o c 03TEMPERATURE (°C)N O R M A L I Z E D R E S E T T I M E O U T P E R I O D0.9900.9851.0150.9950.9901.0001.0051.0101.020-40-10520-253550958011065125 M A X 6381/90 t o c 04TEMPERATURE (°C)N O R M A L I Z E D R E S E T TH R E S H O L D NORMALIZED RESET THRESHOLDvs. TEMPERATURE00.40.20.80.61.01.2063912OUTPUT-VOLTAGE LOW vs. SINK CURRENTI SINK (mA)V O L (V )01.00.52.01.52.53.00500750250100012501500OUTPUT-VOLTAGE HIGH vs. SOURCE CURRENTI SOURCE (µA)V O H (V )45001100010010MAXIMUM TRANSIENT DURATION vs. RESET COMPARATOR OVERDRIVE15050350250500200100400300RESET COMPARATOR OVERDRIVE, V TH - V CC (mV)M A X I M U M T R A N S I E N T D U R A T I O N (µs )3.53.93.74.54.34.14.74.95.35.15.5-40-105-25203550658095110125RESET IN TO RESET DELAYvs. TEMPERATUREM A X 6381/90 t o c 08TEMPERATURE (°C)R E S E T I N D E L A Y (µs )MAX6381–MAX6390SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset CircuitsPin DescriptionM A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits6_______________________________________________________________________________________ Detailed DescriptionRESET OutputA µP reset input starts the µP in a known state. These µP supervisory circuits assert reset to prevent code execution errors during power-up, power-down, or brownout conditions.Reset asserts when V CC is below the reset threshold;once V CC exceeds the reset threshold, an internal timer keeps the reset output asserted for the reset timeout period. After this interval, reset output deasserts. Reset output is guaranteed to bein the correct logic state for V CC ≥1V.Manual Reset Input (MAX6384/MAX6385/MAX6386/MAX6390)Many µP-based products require manual reset capabil-ity, allowing the operator, a test technician, or external logic circuitry to initiate a reset. A logic low on MR asserts reset. Reset remains asserted while MR is low,and for the reset active timeout period (t RP ) after MR returns high. This input has an internal 63k ?pullup resistor (1.56k ?for MAX6390), so it can be left uncon-nected if it is not used. MR can be driven with TTL or CMOS logic levels, or with open-drain/collector outputs.Connect a normally open momentary switch from MR to G ND to create a manual-reset function; external debounce circuitry is not required. If MR is driven from long cables or if the device is used in a noisy environ-ment, connecting a 0.1µF capacitor from MR to G ND provides additional noise immunity.RESET IN Comparator(MAX6387/MAX6388/MAX6389)RESET IN is compared to an internal +1.27V reference.If the voltage at RESET IN is less than 1.27V, reset asserts. Use the RESET IN comparator as a user-adjustable reset detector or as a secondary power-sup-ply monitor by implementing a resistor-divider at RESET IN (shown in Figure 1). Reset asserts when either V CC or RESET IN falls below its respective threshold volt-age. Use the following equation to set the threshold:V INTH = V THRST (R1/R2 + 1)where V THRST = +1.27V. To simplify the resistor selec-tion, choose a value of R2 and calculate R1:R1 = R2 [(V INTH /V THRST ) - 1]Since the input current at RESET IN is 50nA (max),large values can be used for R2 with no significant loss in accuracy.___________Applications InformationNegative-Going V CC TransientsIn addition to issuing a reset to the µP during power-up,power-down, and brownout conditions, the MAX6381–MAX6390 are relatively immune to short dura-tion negative-going V CC transients (glitches).The Typical Operating Characteristics section shows the Maximum Transient Durations vs. Reset Comparator Overdrive, for which the MAX6381–MAX6390 do not generate a reset pulse. This graph was generated usinga negative-going pulse applied to V CC , starting above the actual reset threshold and ending below it by the magnitude indicated (reset comparator overdrive). The graph indicates the typical maximum pulse width a neg-ative-going V CC transient may have without causing a reset pulse to be issued. As the magnitude of the tran-sient increases (goes farther below the reset threshold),the maximum allowable pulse width decreases. A 0.1µF capacitor mounted as close as possible to V CC provides additional transient immunity.Ensuring a Valid RESET Output Down to V CC = 0VThe MAX6381–MAX6390 are guaranteed to operate properly down to V CC = 1V. In applications that require valid reset levels down to V CC = 0V, a pulldown resistor to active-low outputs (push/pull only, Figure 2) and a pullup resistor to active-high outputs (push/pull only)will ensure that the reset line is valid while the reset out-put can no longer sink or source current. This schemedoes not work with the open-drain outputs of the MAX6383/MAX6386/MAX6389/MAX6390. The resistor value used is not critical, but it must be small enough not to load the reset output when V CC is above the reset threshold. For most applications, 100k ?is ade-quate.MAX6381–MAX6390SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset Circuits_______________________________________________________________________________________7M A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits 8_______________________________________________________________________________________ Selector GuideOrdering Information (continued)Note:Insert reset threshold suffix (see Reset Threshold table)after "XR", "XS", or "LT." Insert reset timeout delay (see Reset Timeout Delay table) after "D" to complete the part number.Sample stock is generally held on standard versions only (see Standard Versions table). Standard versions have an order increment requirement of 2500 pieces. Nonstandard versions have an order increment requirement of 10,000 pieces.Contact factory for availability of nonstandard versions.*MAX6390 is available with D4 or D7 timing only.+Denotes a lead-free package.MAX6381–MAX6390SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset Circuits_______________________________________________________________________________________9Chip InformationTRANSISTOR COUNT: 647PROCESS: BiCMOSPin Configurations (continued)M A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits10______________________________________________________________________________________ Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /doc/5700977901f69e3143329415.html /packages .)MAX6381–MAX6390SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset Circuits______________________________________________________________________________________11Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /doc/5700977901f69e3143329415.html /packages .)M A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits12______________________________________________________________________________________ Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /doc/5700977901f69e3143329415.html /packages .)SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset CircuitsMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600____________________13?2007 Maxim Integrated Productsis a registered trademark of Maxim Integrated Products, Inc.MAX6381–MAX6390Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /doc/5700977901f69e3143329415.html /packages .)Revision HistoryPages changed at Rev 4: Title on all pages, 1, 2, 5,7–13。
TweenMax中文手册与参数说明
TweenMax 建立在TweenLite 和TweenFilterLite 基础之上，因此，又揉合了这二者的功能，使得功能更加的齐备，但是如果说易用性，觉得还是 TweenLite 来得方便一些。
我的译文是从 TweenLite 开始的，接着是 TweenFilterLite 最后是 TweenMax ，这也恰好是这个类发展的轨迹，沿着这个轨迹一路读过来，会觉得容易理解很多。
描述:TweenMax 建立在TweenLite 核心类以及它的大哥TweenFilterLite 基础之上，它为Tween 家族增加了新的受欢迎的功能（尽管只是锦上添花），从而使家族更加的壮大，比如贝赛尔缓动、暂停/继续能力，简便的连续缓、16进制颜色缓动、以及更多的内容。
TweenMax 采用了与它的兄弟相似的易于学习的语法结构。
实事上，因为它扩展自它们，TweenMax 可以做任何TweenLite 和/或者TweenFilterLite 能做的事，还加上了更多的特色。
那么为什么要建立3 个类，而不是1 个呢？问的好，我的目标是：效率最大化，尺寸最小化。
坦白的说，TweenLite 可能是所有的程序员在90% 的项目中都需要用到的，而它仅有3k。
相对它的功能来说，它是非常高效和紧凑的。
但是如果你需要对滤镜进行缓动，或者更丰富的图像效果，比如说饱和度(saturation)、对比度(contrast)、色相(hue)、调色等等进行控制，那就装上TweenFilterLite 总共6k 。
还想要的更多？No problem (没问题)– TweenMax 已经在总共8k 的大小里面塞满了足够多的功能。
想查看相关的功能对比图，请访问 以获取更多信息。
( TweenMax 类包中直接包含有独立的TweenLite 和TweenFilterLite 类，因此下载这一个包就可以了，在Flash 类路径中添加的时候，也只需要添加这一个路径就可以了—-译者注)TweenMax 创造了一种全新的功能，叫做―bezierThrough‖（暂译为贝塞尔通路），这个功能允许你定义一些点，通过贝塞尔曲线连接这些点，（通常的控制点只是用来拉近曲线，这里的点直接在曲线的路径上）。
L7805CD2T-TR中文资料
MAX6398ATT-T中文资料
General DescriptionThe MAX6397/MAX6398 are small, high-voltage overvolt-age protection circuits. These devices disconnect the output load or limit the output voltage during an input overvoltage condition. These devices are ideal for appli-cations that must survive high-voltage transients such as those found in automotive and industrial applications.The MAX6397/MAX6398 monitor the input or output voltages and control an external n-channel MOSFET to isolate or limit the load from overvoltage transient energy.When the monitored input voltage is below the user-adjustable overvoltage threshold, the external n-channel MOSFET is turned on by the GATE output. In this mode,the internal charge pump fully enhances the n-channel MOSFET with a 10V gate-to-source voltage.When the input voltage exceeds the overvoltage thresh-old, the protection can disconnect the load from the input by quickly forcing the GATE output low. In some applications, disconnecting the output from the load is not desirable. In these cases, the protection circuit can be configured to act as a voltage limiter where the GATE output sawtooths to limit the voltage to the load.The MAX6397 also offers an always-on linear regulator that is capable of delivering up to 100mA of output current. This high-voltage linear regulator consumes only 37µA of quiescent current.The regulator is offered with output options of 5V, 3.3V,2.5V, or 1.8V. An open-drain, power-good output (POK)asserts when the regulator output falls below 92.5% or 87.5% of its nominal voltage.The MAX6397/MAX6398 include internal thermal-shut-down protection, disabling the external MOSF ET and linear regulator if the chip reaches overtemperature conditions. The devices operate over a wide 5.5V to 72V supply voltage range, are available in small TDFN packages, and are fully specified from -40°C to +125°C.ApplicationsAutomotive Industrial FireWire ®Notebook Computers Wall Cube Power DevicesFeatures♦5.5V to 72V Wide Supply Voltage Range♦Overvoltage Protection Controllers Allow User to Size External n-Channel MOSFETs ♦Internal Charge-Pump Circuit Ensures MOSFET Gate-to-Source Enhancement for Low R DS(ON)Performance ♦Disconnect or Limit Output from Input During Overvoltage Conditions ♦Adjustable Overvoltage Threshold ♦Thermal-Shutdown Protection♦Always-On, Low-Current (37µA) Linear Regulator Sources Up to 100mA (MAX6397)♦Fully Specified from -40°C to +125°C (T J )♦Small, Thermally Enhanced 3mm x 3mm TDFN PackageMAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V________________________________________________________________Maxim Integrated Products1Pin ConfigurationsOrdering Information19-3668; Rev 3; 1/07For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Selector Guide and Typical Operating Circuit appear at end of data sheet.FireWire is a registered trademark of Apple Computer, Inc.M A X 6397/M A X 6398Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V= 14V; C = 6000pF, C = 4.7µF, T = T = -40°C to +125°C, unless otherwise noted. Typical values are at T = T = +25°C.)(Note 1)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional oper-ation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.(All pins referenced to GND, unless otherwise noted.)IN, GATE, OUT............................................................-0.3V to +80V SHDN ..................................................................-0.3V to (IN + 0.3V)GATE to OUT.................................................................-0.3 to +20V SET, REG, POK...........................................................-0.3V to +12V Maximum Current:IN, REG...............................................................................350mA All Remaining Pins...................................................................50mAContinuous Power Dissipation (T A = +70°C)6-Pin TDFN (derate 18.2mW/°C above +70°C).............1455mW 8-Pin TDFN (derate 18.2mW/°C above +70°C).............1455mW Operating Temperature Range (T A )......................-40°C to +125°C Junction Temperature...........................................................+150°C Storage Temperature Range.................................-65°C to +150°C Lead Temperature................................................................+300°CMAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)(V IN = 14V; C GATE = 6000pF, C REG = 4.7µF, T A = T J = -40°C to +125°C, unless otherwise noted. Typical values are at T A = T J = +25°C.)(Note 1)Note 1:Specifications to -40°C are guaranteed by design and not production tested.Note 2:The MAX6397/MAX6398 power up with the external FET in off mode (V GATE = GND). The external FET turns on t START after thedevice is powered up and all input conditions are valid.Note 3:For accurate overtemperature shutdown performance, place the device in close thermal contact with the external MOSFET.Note 4:Dropout voltage is defined as V IN - V REG when V REG is 2% below the value of V REG for V IN = V REG (nominal) + 2V.Note 5:Operations beyond the thermal dissipation limit may permanently damage the device.M A X 6397/M A X 6398Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 4_______________________________________________________________________________________Typical Operating Characteristics(V IN = 14V, C REG = 4.7µF, I REG = 0, unless otherwise noted.)40608010012014016002010304050607080SUPPLY CURRENT vs. INPUT VOLTAGEINPUT VOLTAGE (V)S U P P L Y C U R R E N T (µA )SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )1007525500-259010011012013014015016017018080-50125405060708090100110120020406080SUPPLY CURRENT vs. INPUT VOLTAGEINPUT VOLTAGE (V)S U P P L Y CU R R E N T (µA )8010090120110130140-502550-25075100125SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L YC U R R E N T (µA )20302540354550040206080SHUTDOWN SUPPLY CURRENT vs. INPUT VOLTAGE (MAX6397)INPUT VOLTAGE (V)S U P P L YC U R R E N T (µA )103050700642810121416182020406080SHUTDOWN SUPPLY CURRENTvs. INPUT VOLTAGEINPUT VOLTAGE (V)S U P PL Y C U R R E N T (µA )0642810124121068141618202224GATE-DRIVE VOLTAGE vs. INPUT VOLTAGEINPUT VOLTAGE (V)V G A T E - V O U T (V )4.04.64.44.25.04.85.85.65.45.26.0-50-250255075100125UVLO THRESHOLD vs. TEMPERATUREM A X 6397-98 t o c 08TEMPERATURE (°C)V U V L O (V )SET THRESHOLD vs. TEMPERATUREM A X 6397-98 t o c 09TEMPERATURE (°C)S E T T H R E S H O L D (V )1007525500-251.2041.2081.2121.2161.2201.2241.2281.2321.2361.2401.200-50125MAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V_______________________________________________________________________________________516.016.316.216.116.516.416.916.816.716.617.0-50-25255075100125GATE-TO-OUT CLAMP VOLTAGEvs. TEMPERATUREM A X 6397-98 t o c 10TEMPERATURE (°C)G A T E -T O -O U T C L A M P V O L T A G E (V )00.40.20.80.61.21.01.41.81.62.0040608020100120140160180DROPOUT VOLTAGE vs. REG LOAD CURRENTREG LOAD CURRENT (mA)D R O P O U T V O L T A GE (V )4.905.004.955.105.055.155.20-40-10520-253550658095110125REG OUTPUT VOLTAGEvs. LOAD CURRENT AND TEMPERATURETEMPERATURE (°C)R E G O U T P U T V O L T A G E (V )4.04.64.44.24.85.05.21601204080200240280320360400MAXIMUM REG OUTPUT VOLTAGE vs. LOAD CURRENT AND TEMPERATURELOAD CURRENT (mA)R E G O U T P U T V O L T A G E (V )POWER-SUPPLY REJECTION RATIOvs. FREQUENCYFREQUENCY (Hz)P S R R (d B )1M 100k 10k 1k 100-60-50-40-30-20-100-701010M4ms/divSTARTUP WAVEFORM(R LOAD = 100Ω, C IN = 10µF, C OUT = 10µF)V IN 10V/divMAX6397-98 toc16V GATE 10V/div V OUT 10V/div I OUT200mA/div400µs/divSTARTUP WAVEFORM FROM SHUTDOWN(C IN = 10µF, C OUT = 10µF)V 2V/divV GATE 10V/divV OUT 10V/div I OUT200mA/divR LOAD = 100ΩTypical Operating Characteristics (continued)(V IN = 14V, C REG = 4.7µF, I REG = 0, unless otherwise noted.)GATE-DRIVE VOLTAGE vs. TEMPERATUREM A X 6397-98 t o c 14TEMPERATURE (°C)G A T E -D R I V E V O L T A G E (V )1007525500-2510.45510.46010.46510.47010.47510.48010.48510.49010.49510.50010.450-50125M A X 6397/M A X 6398Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 6_______________________________________________________________________________________Typical Operating Characteristics (continued)(V IN = 14V, C REG = 4.7µF, I REG = 0, unless otherwise noted.)200µs/divOVERVOLTAGE SWITCH FAULTV IN 20V/divV GATE 20V/div V OUT 20V/div V REG 5V/divV OV = 30V1ms/divVOLTAGE LIMIT FAULTV IN 20V/divV GATE 20V/divV OUT 20V/div V REG 5V/divV OV = 30V400µs/divTRANSIENT RESPONSEV IN 10V/divV REG100mV/divC REG = 10µF I REG = 10mA1ms/divREG LOAD-TRANSIENT RESPONSEV REGAC-COUPLED 500mV/divI REG100mA/divC REG = 10µF1ms/divREGULATOR STARTUP WAVEFORMV IN 10V/divV POK 2V/divV REG 2V/divI REG = 10mA100µs/divREGULATOR POK ASSERTIONV REG 2V/divI REG200mA/div V POK 2V/divI REG = 00V0V0ADetailed Description The MAX6397/MAX6398 are ultra-small, low-current, high-voltage protection circuits for automotive applica-tions that must survive load dump and high-voltage transient conditions. These devices monitor the input/ output voltages and control an external n-channel MOSF ET to isolate the load or to regulate the output voltage from overvoltage transient energy. The con-troller allows system designers to size the external MOSFET to their load current and board size.The MAX6397/MAX6398 drive the MOSF ET’s gate high when the monitored input voltage is below the adjustable overvoltage threshold. An internal charge-pump circuit provides a 5V to 10V gate-to-source drive (see the Typical Operating Characteristics) to ensure low input-to-load voltage drops in normal operating modes. When the input voltage rises above the user-adjusted overvoltage threshold, GATE pulls to OUT, turning off the MOSFET.The MAX6397/MAX6398 are configurable to operate as overvoltage protection switches or as closed-looped volt-age limiters. In overvoltage protection switch mode, theinput voltage is monitored. When an overvoltage condi-tion occurs at IN, GATE pulls low, disconnecting the loadfrom the power source, and then slowly enhances upon removal of the overvoltage condition. In overvoltagelimit mode, the output voltage is monitored and theMAX6397/MAX6398 regulate the source of the external MOSFET at the adjusted overvoltage threshold, allowing devices within the system to continue operating during an overvoltage condition.The MAX6397/MAX6398 undervoltage lockout (UVLO) function disables the devices as long as the input remains below the 5V (typ) UVLO turn-on threshold. TheMAX6397/MAX6398 have an active-low SHDN input toturn off the external MOSFET, disconnecting the load and reducing power consumption. After power is applied and SHDN is driven above its logic-high voltage, there is a100µs delay before GATE enhancement commences.MAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V _______________________________________________________________________________________7M A X 6397/M A X 6398The MAX6397 integrates a high-input-voltage, low-qui-escent-current linear regulator in addition to an over-voltage protector circuit. The linear regulator remains enabled at all times to power low-current “always-on”applications (independent of the state of the external MOSF ET). The regulator is offered with several stan-dard output voltage options (5V, 3.3V, 2.5V, or 1.8V).An open-drain power-good output notifies the system if the regulator output falls to 92.5% or 87.5% of its nomi-nal voltage. The MAX6397’s REG output operates inde-pendently of the SHDN logic input.The MAX6397/MAX6398 include internal thermal-shut-down protection, disabling the external MOSF ET and linear regulator if the chip reaches overtemperature conditions.Linear Regulator (MAX6397 Only)The MAX6397 is available with 5.0V, 3.3V, 2.5V, and 1.8V factory-set output voltages. Each regulator sources up to 100mA and includes a current limit of 230mA. The linear regulator operates in an always-on condition regardless of the SHDN logic. For fully specified operation, V IN must be greater than 6.5V for the MAX6397L/M (5V regulator output). The actual output current may be limited by the operating condition and package power dissipation.Power-OK OutputPOK is an open-drain output that goes low when REG falls to 92.5% or 87.5% (see the Selector Guide ) of its nominal output voltage. To obtain a logic-level output,connect a pullup resistor from POK to REG or another system voltage. Use a resistor in the 100k Ωrange to minimize current consumption. POK provides a valid logic-output level down to V IN = 1.5V.GATE VoltageThe MAX6397/MAX6398 use a high-efficiency charge pump to generate the GATE voltage. Upon V IN exceed-ing the 5V (typ) UVLO threshold, GATE enhances 10V above IN (for V IN ≥14V) with a 75µA pullup current. An overvoltage condition occurs when the voltage at SET pulls above its 1.215V threshold. When the threshold is crossed, GATE falls to OUT within 100ns with a 100mA (typ) pulldown current. The MAX6397/MAX6398 include an internal clamp to OUT that ensures GATE is limited to 18V (max) above OUT to prevent gate-to-source damage to the external FET.The GATE cycle during overvoltage limit and overvolt-age switch modes are quite similar but have distinct characteristics. In overvoltage switch mode (Figure 2a),GATE is enhanced to V IN + 10V while the monitored IN voltage remains below the overvoltage fault threshold (SET < 1.215V). When an overvoltage fault occurs (SET ≥1.215V), GATE is pulled one diode below OUT, turn-ing off the external F ET and disconnecting the load from the input. GATE remains low (FET off) as long as V IN is above the overvoltage fault threshold. As V IN falls back below the overvoltage fault threshold (-5% hys-teresis) GATE is again enhanced to V IN + 10V.In overvoltage limit mode (Figure 2b), GATE is enhanced to V IN + 10V. While the monitored OUT voltage remains below the overvoltage fault threshold (SET < 1.215V).When an overvoltage fault occurs (SET ≥1.215V),GATE is pulled low one diode drop below OUT until OUT drops 5% below the overvoltage fault threshold.GATE is then turned back on until OUT again reaches the overvoltage fault threshold and GATE is again turned off.Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 8_______________________________________________________________________________________GATE cycles on-off-on-off-on in a sawtooth waveform until OUT remains below the overvoltage fault threshold and GATE remains constantly on (V IN + 10V). The over-voltage limiter’s sawtooth GATE output operates the MOSFET in a switched-linear mode while the input volt-age remains above the overvoltage fault threshold. The sawtooth frequency depends on the load capacitance,load current, and MOSFET turn-on time (GATE charge current and GATE capacitance).GATE goes high when the following startup conditions are met: V IN is above the UVLO threshold, SHDN is high, an overvoltage fault is not present and the device is not in thermal shutdown.Overvoltage MonitoringWhen operating in overvoltage mode, the MAX6397/MAX6398 feedback path (F igure 3) consists of IN,SET’s internal comparator, the internal gate charge pump, and the external n-channel MOSFET resulting in a switch-on/off function. When the programmed over-voltage threshold is tripped, the internal fast compara-tor turns off the external MOSFET, pulling GATE to OUT within t OV and disconnecting the power source from the load. When IN decreases below the adjusted over-voltage threshold, the MAX6397/MAX6398 slowly enhance GATE above OUT, reconnecting the load to the power source.Overvoltage LimiterWhen operating in overvoltage limiter mode, the MAX6397/MAX6398 feedback path (F igure 4) consists of OUT, SET’s internal comparator, the internal gate charge pump and the external n-channel MOSF ET,which results in the external MOSF ET operating as a voltage regulator.During normal operation, GATE is enhanced 10V above OUT. The external MOSFET source voltage is monitored through a resistor-divider between OUT and SET. When OUT rises above the adjusted overvoltage threshold, an internal comparator sinks the charge-pump current, dis-charging the external GATE, regulating OUT at the set overvoltage threshold. OUT remains active during the overvoltage transients and the MOSFET continues to con-duct during the overvoltage event, operating in switched-linear mode.MAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V_______________________________________________________________________________________9V GATE 10V/divV OUT 10V/divV IN 10V/div10ms/divV GATE 10V/divV OUT 10V/divV IN 10V/div4ms/divM A X 6397/M A X 6398As the transient begins decreasing, OUT fall time will depend on the MOSF ET’s GATE charge, the internal charge-pump current, the output load, and the tank capacitor at OUT.For fast-rising transients and very large-sized MOSFETs,add an additional external bypass capacitor from GATE to GND to reduce the effect of the fast-rising voltages at IN. The external capacitor acts as a voltage-divider working against the MOSF ETs’ drain-to-gate capaci-tance. For a 6000pF C gd , a 0.1µF capacitor at GATE will reduce the impact of the fast-rising V IN input.Caution must be exercised when operating the MAX6397/MAX6398 in voltage-limiting mode for long durations. If the V IN is a DC voltage greater than the MOSFET’s maximum gate voltage, the FET will dissipate power continuously. To prevent damage to the external MOSFET, proper heatsinking should be implemented.Applications InformationLoad DumpMost automotive applications run off a multicell, 12V lead-acid battery with a nominal voltage that swings between 9V and 16V (depending on load current,charging status, temperature, battery age, etc.). The battery voltage is distributed throughout the automobile and is locally regulated down to voltages required by the different system modules. Load dump occurs when the alternator is charging the battery and the battery becomes disconnected. Power in the alternator (essen-tially an inductor) flows into the distributed power sys-tem and elevates the voltage seen at each module. The voltage spikes have rise times typically greater than 5ms and decays within several hundred milliseconds but can extend out to 1s or more depending on thecharacteristics of the charging system (F igure 5).These transients are capable of destroying semicon-ductors on the first ‘fault event.’Setting Overvoltage ThresholdsSET provides an accurate means to set the overvoltage level for the MAX6397/MAX6398. Use a resistor-divider to set the desired overvoltage condition (Figure 6). SET has a rising 1.215V threshold with a 5% falling hysteresis.Begin by selecting the total end-to-end resistance,R TOTAL = R1 + R2. Choose R TOTAL to yield a total cur-rent equivalent to a minimum 100 x I SET (SET’s input bias current) at the desired overvoltage threshold.For example:With an overvoltage threshold set to 20V:R TOTAL < 20V/(100 x I SET )where I SET is SET’s 50nA input bias current.R TOTAL < 4M ΩUse the following formula to calculate R2:where V TH is the 1.215V SET rising threshold and V OV is the overvoltage threshold.R2 = 243k Ω, use a 240k Ωstandard resistor.R TOTAL = R2 + R1, where R1 = 3.76M Ω.Use a 3.79M Ωstandard resistor.A lower value for total resistance dissipates morepower but provides slightly better accuracy.Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 10______________________________________________________________________________________Reverse-Battery ProtectionUse a diode or p-channel MOSF ET to protect the MAX6397/MAX6398 during a reverse-battery insertion (Figures 7a, 7b). Low p-channel MOSFET on-resistance of 30m Ωor less yields a forward-voltage drop of only a few millivolts (versus hundreds of millivolts for a diode,Figure 7a) thus improving efficiency.Connecting a positive battery voltage to the drain of Q1(F igure 7b) produces forward bias in its body diode,which clamps the source voltage one diode drop below the drain voltage. When the source voltage exceeds Q1’s threshold voltage, Q1 turns on. Once the F ET is on, the battery is fully connected to the system and can deliver power to the device and the load.An incorrectly inserted battery reverse-biases the F ET’s body diode. The gate remains at the ground potential.The FET remains off and disconnects the reversed bat-tery from the system. The zener diode and resistor com-bination prevent damage to the p-channel MOSF ET during an overvoltage condition.MAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V______________________________________________________________________________________11M A X 6397/M A X 6398REG Capacitor Selection for StabilityFor stable operation over the full temperature range and with load currents up to 100mA, use ceramic capacitor values greater than 4.7µF. Large output capacitors help reduce noise, improve load-transient response, and power-supply rejection at REG. Note that some ceramic dielectrics exhibit large capacitance and ESR variation with temperature. At lower temperatures, it may be nec-essary to increase capacitance.Under normal conditions, use a 10µF capacitor at rger input capacitor values and lower ESR provide bet-ter supply-noise rejection and line-transient response.Inrush/Slew-Rate ControlInrush current control can be implemented by placing a capacitor at GATE (F igure 8) to slowly ramp up the GATE, thus limiting the inrush current and controlling GATE’s slew rate during initial turn-on. The inrush cur-rent can be approximated using the following formula:where I GATE is GATE’s 75µA sourcing current, I LOAD is the load current at startup, and C OUT is the output capacitor.Input Transients ClampingWhen the external MOSFET is turned off during an over-voltage occurrence, stray inductance in the power path may cause voltage ringing exceeding the MAX6397/MAX6398 absolute maximum input (IN) supply rating.The following techniques are recommended to reduce the effect of transients:•Minimize stray inductance in the power path usingwide traces, and minimize loop area including the power traces and the return ground path.•Add a zener diode or transient voltage suppressor(TVS) rated below the IN absolute maximum rating (Figure 9).Add a resistor in series with IN to limit transient currentgoing into the input for the MAX6398 only.Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 12______________________________________________________________________________________Figure 8. MAX6397/MAX6398 Controlling GATE Inrush CurrentFigure 9. Protecting the MAX6397/MAX6398 Input from High-Voltage TransientsMOSFET SelectionSelect external MOSF ETs according to the application current level. The MOSF ET’s on-resistance (R DS(ON))should be chosen low enough to have minimum voltage drop at full load to limit the MOSFET power dissipation.Determine the device power rating to accommodate an overvoltage fault when operating the MAX6397/MAX6398 in overvoltage limit mode.During normal operation, the external MOSFETs dissipate little power. The power dissipated in normal operation is:P Q1 = I LOAD 2x R DS(ON).The most power dissipation will occur during a pro-longed overvoltage event when operating the MAX6397/MAX6398 in voltage limiter mode, resulting in high power dissipated in Q1 (F igure 10) where the power dissipated across Q1 is:P Q1= V Q1x I LOADwhere V Q1is the voltage across the MOSF ET’s drain and source.Thermal ShutdownThe MAX6397/MAX6398 thermal-shutdown feature shuts off the linear regulator output, REG, and GATE if it exceeds the maximum allowable thermal dissipation.Thermal shutdown also monitors the PC board tempera-ture of the external nF ET when the devices sit on thesame thermal island. Good thermal contact between the MAX6397/MAX6398 and the external nF ET is essential for the thermal-shutdown feature to operate effectively.Place the nFET as close as possible to OUT.When the junction temperature exceeds T J = +150°C,the thermal sensor signals the shutdown logic, turning off REG’s internal pass transistor and the GATE output,allowing the device to cool. The thermal sensor turns the pass transistor and GATE on again after the IC’s junction temperature cools by 20°C. Thermal-overload protection is designed to protect the MAX6397/MAX6398 and the external MOSFET in the event of cur-rent-limit fault conditions. For continuous operation, do not exceed the absolute maximum junction-tempera-ture rating of T J = +150°C.Thermal ShutdownOvervoltage Limiter ModeWhen operating the MAX6397/MAX6398 in overvoltage limit mode for a prolonged period of time, a thermal shutdown is possible due to device self-heating. The thermal shutdown is dependent on a number of differ-ent factors:•The device’s ambient temperature (T A )•The output capacitor (C OUT )•The output load current (I OUT )•The overvoltage threshold limit (V OV )•The overvoltage waveform period (t OVP )•The power dissipated across the package (P DISS )MAX6397/MAX6398Overvoltage Protection Switch/LimiterControllers Operate Up to 72V______________________________________________________________________________________13M A X 6397/M A X 6398When OUT exceeds the adjusted overvoltage threshold,an internal GATE pulldown current is enabled until OUT drops by 5%. The capacitance at OUT is discharged by the internal current sink and the external OUT load cur-rent. The discharge time (∆t1) is approximately:where V OV is the adjusted overvoltage threshold, I OUT is the external load current and I GATEPD is the GATE’s internal 100mA (typ) pulldown current.When OUT falls 5% below the overvoltage threshold point, the internal current sink is disabled and the MAX6397/MAX6398’s internal charge pump begins recharging the external GATE voltage. The OUT volt-age continues to drop due to the external OUT load current until the MOSF ET gate is recharged. The time needed to recharge GATE and re-enhance the external nFET is approximately:where C ISS is the MOSFET’s input capacitance, V GS(TH)is the MOSFET’s gate-to-source threshold voltage, V F is the internal clamp diode forward voltage (V F = 1.5V typ),and I GATE is the MAX6397/MAX6398 charge-pump cur-rent (75µA typ).During ∆t2, C OUT loses charge through the output load.The voltage across C OUT (∆V2) decreases until the MOSF ET reaches its V GS(TH) threshold and can be approximated using the following formula:Once the MOSFET V GS (TH ) is obtained, the slope of the output voltage rise is determined by the MOSF ET Q G charge through the internal charge pump with respect to the drain potential. The time for the OUT voltage to rise again to the overvoltage threshold can be approxi-mated using the following formula:where ∆V OUT = ( V OV x 0.05) + ∆V2.The total period of the overvoltage waveform can be summed up as follows:t OVP = ∆t1 + ∆t2 + ∆t3The MAX6397/MAX6398 dissipate the most power dur-ing an overvoltage event when I OUT = 0 (C OUT is dis-charged only by the internal current sink). The maximum power dissipation can be approximated using the follow-ing equation:The die temperature (T J ) increase is related to θJC (8.3°C/W and 8.5°C/W for the MAX6397 and MAX6398,respectively) of the package when mounted correctly with a strong thermal contact to the circuit board. The MAX6397/MAX6398 thermal shutdown is governed by the equation:T J = T A + P DISS x (θJC + θCA) < 170°C (typical thermal-shutdown temperature)For the MAX6397, the power dissipation of the internal linear regulator must be added to the overvoltage pro-tection circuit power dissipation to calculate the die temperature. The linear regulator power dissipation is calculated using the following equation:P REG = (V IN – V REG ) (I REG )F or example, using an IRF R3410 100V n-channel MOSF ET, F igure 12 illustrates the junction temperature vs. output capacitor with I OUT = 0, T A = +125°C, V OV < 16V,V F = 1.5V, I GATE = 75mA, and I GATEPD =100mA. Figure 12 shows the relationship between output capacitance versus die temperature for the conditionslisted above.Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V 14______________________________________________________________________________________。
MAX1978中文数据手册
用于Peltier模块的集成温度控制器概论MAX1978 / MAX1979是用于Peltier热电冷却器（TEC）模块的最小, 最安全, 最精确完整的单芯片温度控制器。
片上功率FET和热控制环路电路可最大限度地减少外部元件, 同时保持高效率。
可选择的500kHz / 1MHz开关频率和独特的纹波消除方案可优化元件尺寸和效率, 同时降低噪声。
内部MOSFET的开关速度经过优化, 可降低噪声和EMI。
超低漂移斩波放大器可保持±0.001°C的温度稳定性。
直接控制输出电流而不是电压, 以消除电流浪涌。
独立的加热和冷却电流和电压限制提供最高水平的TEC保护。
MAX1978采用单电源供电, 通过在两个同步降压调节器的输出之间偏置TEC, 提供双极性±3A输出。
真正的双极性操作控制温度, 在低负载电流下没有“死区”或其他非线性。
当设定点非常接近自然操作点时, 控制系统不会捕获, 其中仅需要少量的加热或冷却。
模拟控制信号精确设置TEC 电流。
MAX1979提供高达6A的单极性输出。
提供斩波稳定的仪表放大器和高精度积分放大器, 以创建比例积分（PI）或比例积分微分（PID）控制器。
仪表放大器可以连接外部NTC或PTC热敏电阻, 热电偶或半导体温度传感器。
提供模拟输出以监控TEC温度和电流。
此外, 单独的过热和欠温输出表明当TEC温度超出范围时。
片上电压基准为热敏电阻桥提供偏置。
MAX1978 / MAX1979采用薄型48引脚薄型QFN-EP 封装, 工作在-40°C至+ 85°C温度范围。
采用外露金属焊盘的耐热增强型QFN-EP封装可最大限度地降低工作结温。
评估套件可用于加速设计。
应用光纤激光模块典型工作电路出现在数据手册的最后。
WDM, DWDM激光二极管温度控制光纤网络设备EDFA光放大器电信光纤接口ATE特征♦尺寸最小, 最安全, 最精确完整的单芯片控制器♦片上功率MOSFET-无外部FET♦电路占用面积<0.93in2♦回路高度<3mm♦温度稳定性为0.001°C♦集成精密积分器和斩波稳定运算放大器♦精确, 独立的加热和冷却电流限制♦通过直接控制TEC电流消除浪涌♦可调节差分TEC电压限制♦低纹波和低噪声设计♦TEC电流监视器♦温度监控器♦过温和欠温警报♦双极性±3A输出电流（MAX1978）♦单极性+ 6A输出电流（MAX1979）订购信息* EP =裸焊盘。
TACT 电子开关产品说明书
274
TACT SwitchTM
Soldering Conditions
Condition for Reflow
Available for Surface Mount Type. 1. Heating method: Double heating method with infrared heater. 2. Temperature measurement: Thermocouple 0.1 to 0.2П CAʢKʣor CCʢTʣat solder jointʢs copper foil surfaceʣ. A heat resistive tape should be used to fix thermocouple. 3. Temperature profile
TACT SwitchTM
6mm Square (Snap-in Type)
SKEG Series
Soft feeling available with joint-stem & horizontal push.
Detector
Push
Slide
Rotary
Encoders
Product Line
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No.
Photo
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Style
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Power Dual-in-line Package Type TACT SwitchTM CustomProducts
2. Please place purchase orders per minimum order unit N (integer).
MAX6380_R42-T中文资料
General DescriptionThe MAX6375–MAX6380 are ultra-low-power circuits used for monitoring battery, power-supply, and regulat-ed system voltages. Each detector contains a precision bandgap reference, comparator, and internally trimmed resistors that set specified trip threshold voltages.These devices provide excellent circuit reliability and low cost by eliminating external components and adjustments when monitoring nominal system voltages from 2.5V to 5V.These circuits perform a single function: they assert an output signal whenever the V CC supply voltage falls below a preset threshold. The devices are differentiated by their output logic configurations and preset thresh-old voltages. The MAX6375/MAX6378 (push-pull) and MAX6377/MAX6380 (open-drain) have an active-low output (OUT is logic low when V CC is below V TH ). The MAX6376/MAX6379 have an active-high push-pull out-put (OUT is logic high when V CC is below V TH ). All parts are guaranteed to be in the correct output logic state for V CC down to 1V. The detector is designed to ignore fast transients on V CC . The MAX6375/MAX6376/MAX6377 have voltage thresholds between 2.20V and 3.08V in approximately 100mV increments. The MAX6378/MAX6379/MAX6380 have voltage thresholds between 3.30V and 4.63V in approximately 100mV increments.Ultra-low supply current of 500nA (MAX6375/MAX6376/MAX6377) makes these parts ideal for use in portable equipment. All six devices are available in a space-sav-ing SC70 package or in a tiny SOT23 package.ApplicationsPrecision Battery Monitoring Load Switching/Power SequencingPower-Supply Monitoring in Digital/Analog Systems Portable/Battery-Powered EquipmentFeatures♦Ultra-Low 500nA Supply Current (MAX6375/MAX6376/MAX6377)♦Thresholds Available from 2.20V to 4.63V in Approximately 100mV Increments♦±2.5% Threshold Accuracy Over Temperature ♦Low Cost♦Available in Three Versions: Push-Pull OUT ,Push-Pull OUT, and Open-Drain OUT ♦Power-Supply Transient Immunity ♦No External Components♦Available in Either a 3-Pin SC70 or 3-Pin SOT23 PackageMAX6375–MAX63803-Pin, Ultra-Low-Power SC70/SOT23Voltage Detectors________________________________________________________________Maxim Integrated Products 1Pin Configuration19-1721; Rev 3; 12/05*The MAX6375/MAX6376/MAX6377 are available in factory-presetthresholds from 2.20V to 3.08V, in approximately 0.1V increments.The MAX6378/MAX6379/MAX6380 are available in factory-preset thresholds from 3.30V to 4.63V, in approximately 0.1V increments.Choose the desired threshold suffix from Table 1 and insert it in the blank spaces following R. There are 21 standard versions,with a required order increment of 2500 pieces. Sample stock is generally held on the standard versions only (see the Selector Guide). The required order increment is 10,000 pieces for non-standard versions (Table 2). Contact factory for availability. All devices available in tape-and-reel only.Devices are available in both leaded and lead-free packaging.Specify lead-free by replacing “-T” with “+T” when ordering.Selector Guide appears at end of data sheet.For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Ordering information continued at end of data sheetM A X 6375–M A X 63803-Pin, Ultra-Low-Power SC70/SOT23Voltage Detectors 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = full range, T A = -40°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C and V CC = 3V.) (Note 1)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.Terminal Voltage (with respect to GND)V CC ...........................................................................-0.3V to +6V OUT, OUT (push-pull)................................-0.3V to (V CC + 0.3V)OUT (open-drain).....................................................-0.3V to +6V Input Current (V CC ).............................................................20mA Output Current (OUT, OUT )................................................20mAContinuous Power Dissipation (T A = +70°C)3-Pin SC70 (derate 2.17mW/°C above +70°C)...........174mW 3-Pin SOT23 (derate 4mW/°C above +70°C)..............320mW Operating Temperature Range ...........................-40°C to +85°C Storage Temperature Range.............................-65°C to +150°C Junction Temperature......................................................+150°C Lead Temperature (soldering, 10s).................................+300°CNote 1:Production tested at +25°C only. Overtemperature limits are guaranteed by design, not production tested.MAX6375–MAX63803-Pin, Ultra-Low-Power SC70/SOT23Voltage Detectors__________________________________________Typical Operating Characteristics(V CC = 5V, T A = +25°C, unless otherwise noted.)00.30.20.10.40.50.60.70.80.91.0-40-2020406080SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )050100150200-40-2020406080PROPAGATION DELAY (FALLING)vs. TEMPERATURETEMPERATURE (°C)P R O P A G A T I O N D E L A Y (µs )040208060120100140-4020-20406080PROPAGATION DELAY (RISING)vs. TEMPERATURETEMPERATURE (°C)P R O P A G A T I O N D E L A Y (µs )50011001000MAXIMUM TRANSIENT DURATION vs. THRESHOLD OVERDRIVE100300400200THRESHOLD OVERDRIVEV TH - V CC (mV)M A X I M U M T R A N S I E N T D U R A T I O N (µs )10Pin DescriptionM A X 6375–M A X 63803-Pin, Ultra-Low-Power SC70/SOT23Voltage Detectors____________Applications InformationInterfacing to Different Logic Voltage ComponentsThe MAX6377/MAX6380 have an active-low, open-drain output. This output structure sinks current when OUT is asserted. Connect a pullup resistor from OUT to any supply voltage up to 5.50V (Figure 1). Select a resistor value large enough to allow a valid logic low (see Electrical Characteristics ), and small enough to register a logic high while supplying all input current and leakage paths connected to the OUT line.Negative-Going V CC TransientsThese devices are relatively immune to short-duration,negative-going V CC transients (glitches). The Typical Operating Characteristics show the Maximum Transient Duration vs. Threshold Overdrive graph, for which out-put pulses are not generated. The graph shows the maximum pulse width that a negative-going V CC tran-sient may typically have before the devices issue out-put signals. As the amplitude of the transient increases,the maximum-allowable pulse width decreases.Figure 1. Interfacing to Different Logic Voltage ComponentsTable 1. Factory-Trimmed Reset Thresholds ‡3-Pin, Ultra-Low-Power SC70/SOT23Voltage Detectors_______________________________________________________________________________________5Table 2. Device Marking Codes and Minimum Order IncrementsMAX6375–MAX6380M A X 6375–M A X 63803-Pin, Ultra-Low-Power SC70/SOT23Voltage Detectors 6__________________________________________________________________________________________________________Chip InformationTRANSISTOR COUNT: 419Selector Guide**Sample stock is generally held on all standard versions.Contact factory for availability of nonstandard versions.*The MAX6375/MAX6376/MAX6377 are available in factory-presetthresholds from 2.20V to 3.08V, in approximately 0.1V increments.The MAX6378/MAX6379/MAX6380 are available in factory-preset thresholds from 3.30V to 4.63V, in approximately 0.1V increments.Choose the desired threshold suffix from Table 1 and insert it in the blank spaces following R. There are 21 standard versions,with a required order increment of 2500 pieces. Sample stock is generally held on the standard versions only (see the Selector Guide). The required order increment is 10,000 pieces for non-standard versions (Table 2). Contact factory for availability. All devices available in tape-and-reel only.Devices are available in both leaded and lead-free packaging.Specify lead-free by replacing “-T” with “+T” when ordering.Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600_____________________7©2005 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products, Inc.3-Pin, Ultra-Low-Power SC70/SOT23Voltage DetectorsMAX6375–MAX6380Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)。
XC61CN替换MAX6377和MAX6380及MAX6808
XC61CN替换MAX6377和MAX6380及MAX6808例：XC61CN 替换MAX6377XC61CN 替换MAX6380XC61CN 替换MAX6808系列名称：【XC61CN/XC61CC】特点：低功耗(0.8V)输入电压(V)：最小--0.8V；最大--6V输出电压(V)：最小--0.7V；最大--10V最大输出电流(mA)：400mA消耗电流(μA)：0.7A封装：SOT-23，SOT-89，SSOT-24，TO-92【TOREX-XC61CN系列】描述：1.XC61CN系列是一款高精度,低功耗的电压检测器芯片,并采用了CMOS生产工艺和激光微调技术。
2.XC61CN系列受温度漂移特性的影响很小,电压检测精度很高。
3.XC61CN系列有CMOS和N沟道开漏两种输出模式供选择。
【TOREX-XC61CN系列】特点：●高精度：±2%, ±1% (VDF=2.6V~5.1V)●低消耗电流：0.7μA(TYP.)[VIN=1.5V]●检测电压范围：能够在0.8V～6.0V范围内以0.1V间隔设定●工作电压范围：0.7V～6.0V(低检测电压0.8V～1.5V), 0.7V～10.0V(一般检测电压1.6V～6.0V)●检测电压温度特性：±100ppm/℃(TYP.)●輸出形式：N沟道开漏/CMOS輸出●封装：SSOT-24, SOT-23, SOT-89, TO-92TOREX日本IC均可完全替代下列型号:XC6221Bxx2MR 替代MIC5253 XC6115xxxxMR 替代LTC699CN8 XC6221BXX2MR 替代MIC5255-xxBM5 XC6116x0xxMR 替代LTC2915xxS8 XC6221BXX2MR 替代MIC5259 XC6121 替代MAX6320XC6204Bxx2DR 替代MIC5305-xxYML XC6122 替代MAX6320XC6419 替代MIC5371 XC6123 替代MAX6320XB1086 替代MIC39100-xxBS XC6124 替代MAX6320XC6205 替代MIC5203 XC6113 替代MAX823XC6411 替代MIC5371 XC6103 替代MAX823XC6412 替代MIC5371 XC6112 替代MAX823XC6415 替代MIC5371 XC6102 替代MAX823XCM406 替代MIC5264 XC6115 替代MAX824XC8101 替代MIC94060 XC6105 替代MAX824XC6601 替代MCP1727 XC6114xxxxMR 替代DS1819BRXC6213 替代TC1014-xxVCT713 XC6104xxxxMR 替代DS1819BRXC6212 替代TC1014-xxVCT713 XC61H 替代MAX809/803XC62KNxx02PR 替代TC59xx02EMBTR XC6101xxxxMR 替代DS1819ARXC62KNxx02MR 替代TC59xx02ECB XC6106xxxxER 替代MAX6335XC62EPxxxxMR 替代TC57xx02ECT XC6106xxxxER 替代MAX6402XC6206Pxx2TB替代TC55RPxx02EZB XC6107 替代MAX825XC6206Pxx2PR 替代TC55RPxx02EMB XC6116xxxxER 替代MAX6402XC6206Pxx2MR 替代TC55RPxx01ECB XC612 替代MAX6779XC6203Pxx2FR 替代TC1264-xxVDB XC61CNxx02NR 替代MAX6377XRxx XC6207 替代TC1014-xxVCT713 XC61CNxx02NR 替代MAX6380XRxx XC6217 替代TC1014-xxVCT XC61CNxx02MR 替代MAX6808URxx XC6206Pxx2PR 替代MCP1700T-xx02E/TT XC61FC 替代MAX809XC6209Bxx2MR 替代TC1014-xxVCT713 XC61FC2912MR 替代MAX809SEUR XC6209Bxx2MR 替代TC1015xxVCT XC61CCxx02NR 替代MAX6375XRxx XC6209Bxx2MR 替代TC1185xxVCT XC61CCxx02NR 替代MAX6378XRxx XC6203Pxx2FR 替代TC1262-xxVDB XC61CCxx02MR 替代MAX6806URxx XC6204Bxx2MR 替代LX8211-xxISE XC6111xxxxMR 替代DS1819ARXC6215Pxx2NR 替代MC78LC00 XC6101 替代MAX823XC6210Bxx2 替代MC78M00 XC6111 替代MAX823XC6401CHxxMR 替代LP3988IMX-xx XC6104 替代MAX824XC6403DHxxMR 替代LP3988IMF-xx XC6114 替代MAX824XC6210B122DR 替代LP3990TL-xx XC6106 替代MAX825XC6210B122DR 替代LP3990MF-xx XC6116 替代MAX825XC6221A182MR 替代LP3990MF-xx XC6107xxxxMR 替代MAX6337USxxD3 XC6202Pxx2TH 替代LM2931AZxx XC6117xxxxMR 替代MAX6337USxxD3 XC6214 替代LM1117MPX-xx XC6107xxxxMR 替代MAX6841/2XC6419 替代LP5996 XC6117xxxxMR 替代MAX6841/2XC6411 替代LP5996 XC61FNxxx2MR 替代MAX803XC6412 替代LP5996 XC61CNxx02MR 替代MAX6380URXC6415 替代LP5996 XC61CCxx02MR 替代MAX6375URXB1086Pxx1JR 替代LM1086CS XC6117 替代MAX825XB1117K12BFR 替代LM1117S XC6106 替代MIC2775XB1117PxxxFR 替代LM1117MPX-xx XC6116 替代MIC2775XC6203Pxx2FR 替代LM1117MPX-xx XC612 替代MIC2777XC6202Pxx2TH 替代LM2936Z-xx XCM410 替代MIC2774XB1117Pxx1FR 替代LM340S XC61CCxx02PR 替代TC54VCxx02EMB XC6202Pxx2TH 替代LM340LAZ-xx XC61CCxx02TB 替代TC54VCxx02EZB XC6202Pxx2MR 替代LM3480IM3-xx XC61H 替代TCM809XC6203P332FR 替代LM3940IMP-3.3 XCM410 替代TC52XC6202Pxx2TH 替代LM78LxxACZ XC6120 替代TC54XC6404DHxxMR 替代LMS5258MF-xx XC612 替代TC52XC6202Pxx2MR 替代LP2950 XC61CNxx02MR 替代TC53Nxx02ECTTR XC6204Bxx2MR 替代LP2978 XC61CNxx02NR 替代TC53Nxx02EVCTR XC6204Bxx2MR 替代LP2980AIM5-xx XC61CN 替代TC54VNXC6204Bxx2MR 替代LP2980IM5-xx XC6202Pxx2TH 替代L4931ABZxxXC6204Axx2MR 替代LP2980IM5X-xx XC6202Pxx2TH 替代L4931CZxxXC6204Bxx2MR 替代LP2981AIM5-xx XC6202Pxx2PR 替代L78LxxABUTRXC6204Bxx2MR 替代LP2981IM5-xx XC6202Pxx2TH 替代L78LxxABZXC6204Bxx2MR 替代LP2982AIM5-xx XC6202Pxx2PR 替代L78LxxACUXC6204Bxx2MR 替代LP2982IM5-xx XC6202Pxx2TH 替代L78LxxACZXC6204Bxx2MR 替代LP2985AIM5-xx XC6202Pxx2TH 替代L78LxxCZXC6204Bxx2MR 替代LP2985IM5-xx XC6203Pxx2FR 替代LD1117SXC6204Bxx2MR 替代LP3984IBP-xx XC6204Bxx2MR 替代LD2979MxxXC6403 替代LP3982 XC6202Pxx2TH 替代LD2979ZxxXC6204Bxx2DR 替代LP3985IBL-xx XC6204Bxx2MR 替代LD2980ABMxxXC6204Bxx2MR 替代LP3985IM5-x.x XC6201Pxx2PR 替代LD2980ABUxxTR XC62H 替代NCP584HSNxxT1G XC6204Bxx2MR 替代LD2980ACMxxXC62E 替代NCP584HSNxxT1G XC6201Pxx2PR 替代LD2980ACUxxXC6404 替代NCP400FCT2G XC6204Bxx2MR 替代LD2981ABMxxXB1086 替代LM317MBDTRK XC6201Pxx2PR 替代LD2981ABUxxXC6202 series 替代LM2931CD XC6204Bxx2MR 替代LD2981ACMxxXC6202Pxx2TH 替代LM2931Z-xx XC6201Pxx2PR 替代LD2981ACUxxXC6202Pxx2MR 替代LP2950 XC6202Pxx2TH 替代LExxABZ/CZXC6202Pxx2TH 替代LP2950CZ-xx XC6401 替代NCP583XVxxT2G XB1086 替代MC33269DTRK XC6214 替代MC78LCxxHT1XC6203Pxx2FR 替代MC33275ST-xxT3 XC6219 替代NCP584HSNxxT1G XC6204Bxx2MR 替代MC33761 XC6219Bxx2MR 替代BAxxxLBSGXC6206Pxx2PR 替代MC78FCxxHT1 XC6219 替代BA0xxLBSGXC6203xxx2PR 替代MC78LCxxHT1 XC6206Pxx2TB 替代RE5RExxACXC6202Pxx2TH 替代MC78LxxACP/BCP XC6206Pxx2PR 替代RH5RLxxAAXC6204Bxx2MR 替代MC78PCxxNTR XC6206Pxx2TH 替代RE5RLxxAAXC6206Pxx2PR 替代MC78RCxxHT1 XC6206Pxx2TB 替代RE5RLxxACXC6217Axx2MR 替代NCP584HSNxxT1G XC62EPxx02MR 替代RN5RGxxAATR XC6203Pxx2FR 替代SC5201-1GSTR3 XC62H 替代RN5RGxxAATR XC6402 替代NCP400FCT2G XC6419 替代R5325XC6403/04 替代NCP400FCT2G XB1086 替代RN5RGxxAATR XC6405 替代NCP400FCT2G XC6411 替代R5325XC6204Bxx2MR 替代R1111Nxx1A/B XC6412 替代R5325XC6204Bxx2MR 替代R1112Nxx1A/B XC6415 替代R5325XC6204Bxx2MR 替代R1112Nxx1B-TR XC8101 替代R5520HXC6206Pxx2PR 替代RH5RExxAA XC6204Bxx2MR 替代R1110Nxx1A/BXC6206Pxx2TH 替代RE5RExxAA。
罗德·斯坦斯 EMI 测试接收器规格说明书
T e s t & M e a s u r e m e n tD a t a S h e e t | 03.00R&S®ESCI/ESCI7 EMI Test Receiver Specifications 800-404-ATEC (2832)e d 1981Version 03.00, June 20092 Rohde & Schwarz R&S ®ESCI/ESCI7 EMI Test ReceiverSpecificationsSpecifications apply under the following conditions: 15 minutes warm-up time at ambient temperature, specified environmentalconditions met, calibration cycle adhered to, and all internal automatic adjustments performed. Data without tolerances: typical values only. Data designated 'nominal' applies to design parameters and is not assured by Rohde & Schwarz.FrequencyR&S ®ESCIDC, AC coupled 9 kHz to 3 GHz R&S ®ESCI7 DC coupled 9 kHz to 7 GHz Frequency rangeAC coupled 1 MHz to 7 GHzResolution0.01 Hz Internal reference frequency (nominal) standardAging per year after 30 days of continuous operation 1 × 10–6Temperature drift +5 °C to +45 °C 1 × 10–6Internal reference frequency (nominal) R&S ®FSP-B4 option (OCXO)Aging per year after 30 days of continuous operation 1 × 10–7Temperature drift +5 °C to +45 °C 1 × 10–8External reference frequency 10 MHz Frequency display (receiver mode) numeric display Resolution 0.1 Hz Frequency display (analyzer mode)with marker or frequency counter Marker resolution span/500 Max. deviation sweep time > 3 × auto sweep time ±(marker frequency × reference frequencyerror + 0.5 % × span + 10 % × resolution bandwidth + ½ (last digit))Frequency counter resolution selectable 0.1 Hz to 10 kHz Count accuracy S/N > 25 dB ± (marker frequency × referencefrequency error + ½ (last digit))Display range of frequency axis R&S ®ESCI 0 Hz, 10 Hz to 3 GHzR&S ®ESCI7 0 Hz, 10 Hz to 7 GHz Max. deviation of display range 0.1 % f = 500 MHz, for f > 500 MHz see diagram100 Hz < –84 dBc (1 Hz), typ. –90 dBc (1 Hz) 1 kHz < –100 dBc (1 Hz), typ. –108 dBc (1 Hz) 10 kHz < –106 dBc (1 Hz), typ. –113 dBc (1 Hz) 100 kHz, span > 100 kHz < –110 dBc (1 Hz), typ. –113 dBc (1 Hz) 1 MHz, span > 100 kHz < –120 dBc (1 Hz), typ. –125 dBc (1 Hz) Spectral purity, SSB phase noise 10 MHz typ. –145 dBc (1 Hz)Residual FM f = 500 MHz, RBW = 1 kHz, sweep time = 100 mstyp. 3 HzVersion 03.00, June 2009Rohde & Schwarz R&S ®ESCI/ESCI7 EMI Test Receiver 3Scan (receiver mode)Scanscan of max. 10 subranges with different, independent settings Measurement time per frequencyselectable33 μs to 100 sSweep (analyzer mode)in time domain, span = 0 Hz 1 μs to 16000 sresolution 125 ns Sweep timein frequency domain, span ≥ 10 Hz 2.5 ms to 16000 s Max. deviation of sweep time1 %Resolution bandwidthsSweep filters3 dB bandwidths10 Hz to 3 MHz, in steps of 1/3/10 ≤ 100 kHz< 3 % Bandwidth accuracy 300 kHz to 3 MHz < 10 % ≤ 100 kHz< 5 Shape factor 60 dB:3 dB 300 kHz to 3 MHz < 156 dB bandwidths 200 Hz, 9 kHz, 120 kHz EMI bandwidths pulse bandwidth 1 MHz ≤ 120 kHz < 3 % Bandwidth accuracy 1 MHz < 10 % ≤ 120 kHz < 5 Shape factor 60 dB:6 dB 1 MHz< 15Video bandwidths analyzer mode1 Hz to 10 MHz, in steps of 1/3/10FFT filtersanalyzer mode 3 dB bandwidths 1 Hz to 30 kHz, in steps of 1/3/10 Bandwidth accuracy 5 %, nominal Shape factor 60 dB:3 dB2.5, nominalChannel filtersBandwidths100/200/300/500 Hz; 1/1.5/2/2.4/2.7/3/3.4/4/4.5/5/6/8.5/9/10/ 12.5/14/15/16/18 (RRC)/20/21/24.3 (RRC)/ 25/30/50/100/150/192/200/300/500 kHz 1/1.228/1.28 (RRC)/1.5/2/3/3.84 (RRC)/ 4.096 (RRC)/ 5 MHz(RRC = root raised cosine)PreselectionPreselectioncan be switched off in analyzer mode R&S ®ESCI: 11 preselection filtersR&S ®ESCI7: 12 preselection filters Bandwidths (–6 dB), nominal R&S ®ESCI, R&S ®ESCI7 < 150 kHz230 kHz, fixed-tuned lowpass filter 150 kHz to 2 MHz 2.6 MHz, fixed-tuned bandpass filter 2 MHz to 8 MHz 2 MHz, tracking bandpass filter 8 MHz to 30 MHz 6 MHz, tracking bandpass filter 30 MHz to 70 MHz 15 MHz, tracking bandpass filter 70 MHz to 150 MHz 30 MHz, tracking bandpass filter 150 MHz to 300 MHz 60 MHz, tracking bandpass filter 300 MHz to 600 MHz 80 MHz, tracking bandpass filter 600 MHz to 1 GHz 100 MHz, tracking bandpass filter 1 GHz to 2 GHz tracking highpass filter2 GHz to3 GHz fixed-tuned highpass filter R&S ®ESCI73 GHz to 7 GHztracking bandpass filter Preamplifier switchable, between preselection and 1st mixer20 dBVersion 03.00, June 20094 Rohde & Schwarz R&S ®ESCI/ESCI7 EMI Test ReceiverLevelDisplay rangedisplayed average noise level (DANL) to 30 dBmMaximum input level DC-coupled 0 V DC voltage AC-coupled 50 V RF attenuation 0 dB 20 dBm CW RF power RF attenuation ≥ 10 dB 30 dBm Pulse spectral density RF attenuation 0 dB 97 dB μV/MHz Max. pulse voltage RF attenuation ≥ 10 dB, 10 μs 150 VR&S ®ESCIRF attenuation ≥ 10 dB, 20 μs 10 mWs R&S ®ESCI7Max. pulse energyRF attenuation ≥ 10 dB, 10 μs 1 mWs Intermodulation1 dB compression of input mixer f > 200 MHz, RF attenuation 0 dB, preselection and preamplifier off5 dBm, nominal RF attenuation 0 dB, level 2 × –30 dBm, ∆f > 5 × RBW or 10 kHz, whichever is larger without preselection, without preamplifierR&S ®ESCI, R&S ®ESCI7 20 MHz to 200 MHz > 5 dBm 200 MHz to 3 GHz > 7 dBm, typ. 10 dBm R&S ®ESCI73 GHz to 7 GHz > 10 dBm, typ. 15 dBm with preselection, without preamplifierR&S ®ESCI, R&S ®ESCI7 20 MHz to 200 MHz > 0 dBm 200 MHz to 3 GHz > 2 dBm, typ. 5 dBm R&S ®ESCI73 GHz to 7 GHz > 10 dBm, typ. 15 dBm with preselection, with preamplifierR&S ®ESCI, R&S ®ESCI7 20 MHz to 200 MHz > –20 dBm 200 MHz to 3 GHz > –18 dBm, typ. –15 dBm R&S ®ESCI7Third-order intercept (TOI)3 GHz to 7 GHz > –10 dBm, typ. –5 dBmRF attenuation 0 dB, level –10 dBm, without preselection, without preamplifierR&S ®ESCI, R&S ®ESCI7 < 100 MHz typ. 25 dBm 100 MHz to 1.5 GHz typ. 35 dBm R&S ®ESCI71.5 GHz to 3.5 GHz typ. 70 dBmRF attenuation 0 dB, level –15 dBm, with preselection, without preamplifierR&S ®ESCI, R&S ®ESCI7 4 MHz to 100 MHz > 40 dBm 100 MHz to 1.5 GHz > 50 dBm R&S ®ESCI71.5 GHz to 3.5 GHz typ. 70 dBmRF attenuation 0 dB, level –35 dBm, with preselection, with preamplifierR&S ®ESCI, R&S ®ESCI7 4 MHz to 100 MHz > 25 dBm 100 MHz to 1.5 GHz > 35 dBm R&S ®ESCI7Second harmonic intercept (SHI)1.5 GHz to 3.5 GHz typ. 10 dBmVersion 03.00, June 2009Rohde & Schwarz R&S ®ESCI/ESCI7 EMI Test Receiver 5RF attenuation 0 dB, RBW = 10 Hz,VBW = 1 Hz, span = 0 Hz, trace average function over 20 sweeps, 50 Ω termination without preselection, without preamplifier, AC-coupledR&S ®ESCI 9 kHz < –105 dBm, nominal 100 kHz < –110 dBm, nominal 1 MHz < –130 dBm, nominal 10 MHz to 1 GHz < –142 dBm, typ. –145 dBm 1 GHz to 2.5 GHz < –140 dBm, typ. –143 dBm 2.5 GHz to 3 GHz < –138 dBm, typ. –141 dBm R&S ®ESCI7 1 MHz < –128 dBm, nominal 10 MHz to 1 GHz < –140 dBm, typ. –143 dBm 1 GHz to 2.5 GHz < –138 dBm, typ. –141 dBm 2.5 GHz to 3 GHz < –136 dBm, typ. –139 dBm 3 GHz to 7 GHz < –138 dBm, typ. –141 dBm without preselection, without preamplifier, DC-coupledR&S ®ESCI 9 kHz < –115 dBm 100 kHz < –120 dBm 1 MHz < –140 dBm, typ. –143 dBm 10 MHz to 1 GHz < –142 dBm, typ. –145 dBm 1 GHz to 2.5 GHz < –140 dBm, typ. –143 dBm 2.5 GHz to 3 GHz < –138 dBm, typ. –141 dBm R&S ®ESCI7 9 kHz < –115 dBm 100 kHz < –120 dBm 1 MHz < –138 dBm, typ. –141 dBm 10 MHz to 1 GHz < –140 dBm, typ. –143 dBm 1 GHz to 2.5 GHz < –138 dBm, typ. –141 dBm 2.5 GHz to 3 GHz < –136 dBm, typ. –139 dBm 3 GHz to 7 GHz < –138 dBm, typ. –141 dBm with preselection, without preamplifier, DC-coupledR&S ®ESCI 9 kHz < –115 dBm 100 kHz < –120 dBm, typ. –140 dBm 1 MHz < –140 dBm, typ. –148 dBm 10 MHz to 1 GHz < –142 dBm, typ. –150 dBm 1 GHz to 2.5 GHz < –140 dBm, typ. –148 dBm 2.5 GHz to 3 GHz < –138 dBm, typ. –141 dBm R&S ®ESCI7 9 kHz < –115 dBm 100 kHz < –120 dBm, typ. –140 dBm 1 MHz < –138 dBm, typ. –146 dBm 10 MHz to 1 GHz < –140 dBm, typ. –148 dBm 1 GHz to 2.5 GHz < –138 dBm, typ. –146 dBm 2.5 GHz to 3 GHz < –136 dBm, typ. –139 dBm 3 GHz to 7 GHz < –138 dBm, typ. –141 dBm with preselection, with preamplifier, DC-coupledR&S ®ESCI 9 kHz < –135 dBm 100 kHz < –140 dBm 1 MHz < –150 dBm, typ. –153 dBm 10 MHz to 1 GHz < –152 dBm, typ. –155 dBm Displayed average noise level (DANL) (analyzer mode)1 GHz to 3 GHz < –150 dBm, typ. –153 dBm R&S ®ESCI7 9 kHz < –135 dBm 100 kHz < –140 dBm 1 MHz < –148 dBm, typ. –151 dBm 10 MHz to 1 GHz < –150 dBm, typ. –153 dBm1 GHz to 7 GHz < –148 dBm, typ. –151 dBmVersion 03.00, June 2009 6 Rohde & Schwarz R&S ®ESCI/ESCI7 EMI Test ReceiverNoise indication (receiver mode) Nominal, calculated from DANL data, 0 dB RF attenuation, 50 Ω termination without preamplifierR&S ®ESCI, R&S ®ESCI7 9 kHz, BW = 200 Hz < 5 dB μV 150 kHz, BW = 200 Hz < 0 dB μV 150 kHz, BW = 9 kHz < 16 dB μV 1 MHz, BW = 9 kHz < –4 dB μV 10 MHz to 30 MHz, BW = 9 kHz < –6 dB μV 30 MHz to 1 GHz, BW = 120 kHz < 6 dB μV 1 GHz to 3 GHz, BW = 1 MHz < 16 dB μV R&S ®ESCI73 GHz to 7 GHz, BW = 1 MHz < 20 dB μV with preamplifierR&S ®ESCI, R&S ®ESCI7 9 kHz, BW = 200 Hz < –15 dB μV 150 kHz, BW = 200 Hz < –20 dB μV 150 kHz, BW = 9 kHz < –4 dB μV 1 MHz, BW = 9 kHz < –14 dB μV 10 MHz to 30 MHz, BW = 9 kHz < –16 dB μV 30 MHz to 1 GHz, BW = 120 kHz < –4 dB μV 1 GHz to 3 GHz, BW = 1 MHz < 6 dB μV R&S ®ESCI7Average (AV) display3 GHz to 7 GHz, BW = 1 MHz < 3 dB μV max peak typ. +11 dB RMS typ. +1 dB quasi-peak band A typ. +3 dB band B typ. +4 dB Increase of DANL relative to AV displaybands C and D typ. +6 dB Immunity to interference Image frequency> 70 dB Intermediate frequency> 70 dB Spurious response f > 1 MHz, 0 dB RF attenuation, without input signal< –103 dBmOther interfering signals ∆f > 100 kHz, mixer level < –10 dBm< –70 dBcRF shielding field strength 3 V/m, 0 dB RF attenuation, 50 Ω termination, f ≠ f IFlevel indication < 10 dB μV, nominalLevel display (receiver mode) digital numeric, resolution 0.01 dB Level displayanalog bargraph display separate for eachdetectorlevel axis 10 dB to 200 dB in steps of 10 dB Spectrum frequency axis linear or logarithmic selectable DetectorsThree detectors can be switched on simultaneously. average (AV), RMS, max peak, min peak, quasi-peak (QPK), CISPR-AV, CISPR-RMS Units of level display dB μV, dBm, dB μA, dBpW, dBpT Measurement timeselectable 33 μs to 100 s Level display (analyzer mode) Screen501 × 400 pixels(one measurement diagram); max. two measurement diagrams with independent settingsLogarithmic level display range 1 dB, 10 dB to 200 dB in steps of 10 dB Linear level display range10 % of reference level per level division, 10 divisions one measurement diagram 3 Number of traces two measurement diagrams 6Trace detectorsmax peak, min peak, auto peak, sample, quasi-peak, average, RMSTrace functionsclear/write, max hold, min hold, average default value 501Number of measurement pointsrange125 to 8001 in steps of approx. a factor of 2Version 03.00, June 2009Rohde & Schwarz R&S ®ESCI/ESCI7 EMI Test Receiver 7logarithmic level display –130 dBm to 30 dBm in steps of 0.1 dB Setting range of reference level linear level display70.71 nV to 7.07 V in steps of 1 % logarithmic level display dBm, dBmV, dB μV, dB μA, dBpW Units of level axislinear level displaymV, μV, mA, μA, nW, pWMax. uncertainty of level measurement level = –30 dBm, RF attenuation 10 dB, RBW 10 kHz, reference level –25 dBm without preselection/preamplifier <0.2 dB (σ = 0.07 dB) Reference level uncertainty at 128 MHzwith preselection/preamplifier <0.3 dB (σ = 0.1 dB) without preselection/preamplifier, AC-coupledR&S ®ESCI9 kHz to 50 kHz < +0.5 dB/–1 dB, nominal 50 kHz to 3 GHz < 0.5 dB (σ = 0.17 dB) R&S ®ESCI71 MHz to 3 GHz < 0.5 dB (σ = 0.17 dB) 3 GHz to 7 GHz <2 dB (σ = 0.7 dB) without preselection/preamplifier, DC-coupledR&S ®ESCI9 kHz to 3 GHz < 0.5 dB (σ = 0.17 dB) R&S ®ESCI79 kHz to 3 GHz < 0.5 dB (σ = 0.17 dB) 3 GHz to 7 GHz < 2 dB (σ = 0.7 dB) with preselection/preamplifier, AC-coupledR&S ®ESCI9 kHz to 50 kHz < +0.8 dB/–1.3 dB, nominal 50 kHz to 3 GHz < 0.8 dB (σ = 0.27 dB) R&S ®ESCI71 MHz to 3 GHz < 0.8 dB (σ = 0.27 dB) 3 GHz to 7 GHz <2 dB (σ = 0.7 dB) with preselection/preamplifier, DC-coupledR&S ®ESCI9 kHz to 3 GHz < 0.8 dB (σ = 0.27 dB) R&S ®ESCI79 kHz to 3 GHz < 0.8 dB (σ = 0.27 dB) Frequency response referenced to 128 MHz3 GHz to 7 GHz < 2 dB (σ = 0.7 dB)Uncertainty of attenuator settingf = 128 MHz,0 dB to 70 dB, referenced to 10 dB RF attenuation < 0.2 dB (σ = 0.07 dB) Uncertainty of reference level setting < 0.2 dB (σ = 0.07 dB) S/N > 16 dBRBW ≤ 120 kHz 0 dB to –70 dB < 0.2 dB (σ = 0.07 dB) –70 dB to –90 dB < 0.5 dB (σ = 0.17 dB) RBW > 120 kHz 0 dB to –50 dB < 0.2 dB (σ = 0.07 dB) Log/lin display nonlinearity–50 dB to –70 dB < 0.5 dB (σ = 0.17 dB) referenced to RBW = 10 kHz 10 kHz to 120 kHz < 0.1 dB (σ = 0.03 dB) 300 kHz to 10 MHz < 0.2 dB (σ = 0.07 dB) Bandwidth switching uncertaintyFFT filter, 1 Hz to 3 kHz < 0.2 dB (σ = 0.07 dB)Total measurement uncertainty (95 % confidence level) Signal level 0 dB to –70 dB below reference level, S/N > 20 dB, RBW ≤ 120 kHz, DC-coupledwithout preselection/preamplifier < 3 GHz 0.5 dB 3 GHz to 7 GHz 1.5 dB with preselection/preamplifier < 3 GHz 1 dB3 GHz to 7 GHz 1.5 dB Quasi-peak indication in line with CISPR 16-1-1Version 03.00, June 20098 Rohde & Schwarz R&S ®ESCI/ESCI7 EMI Test ReceiverTrigger functionsTriggerTrigger sourcefree run, video, external, IF levelspan ≥ 10 Hz 125 ns to 100 s, resolution min. 125 ns (or 1 % of offset)Trigger offsetspan = 0 Hz±(125 ns to 100 s), resolution min. 125 ns, dependent on sweep timeMax. deviation of trigger offset±(125 ns + (0.1 % × trigger offset))Gated sweep Gate source video, external, IF level Gate delay 1 μs to 100 sGate length125 ns to 100 s, resolution min. 125 ns (or 1 % of gate length)Max. deviation of gate length± (125 ns + (0.1 % × gate length))Audio demodulationAF demodulation modes AM and FMAudio outputloudspeaker and earphone jack Marker hold time in analyzer modeselectable100 ms to 60 sInputs and outputs (front panel)RF inputImpedance 50 ΩConnector N femaleRF attenuation < 10 dB, DC-coupledR&S ®ESCI, R&S ®ESCI7 9 kHz to 1 GHz < 2.0, typ. 1.5 1 GHz to 3 GHz < 3.0, typ. 2.5 R&S ®ESCI73 GHz to 7 GHz< 3.0, typ. 2.5RF attenuation ≥ 10 dB, DC-coupledR&S ®ESCI, R&S ®ESCI7 9 kHz to 1 GHz < 1.2 1 GHz to 3 GHz < 1.5 R&S ®ESCI73 GHz to 7 GHz< 2.0RF attenuation < 10 dB, AC-coupledR&S ®ESCI9 kHz to 100 kHz 2.5 100 kHz to 1 GHz 2.0 1 GHz to 3 GHz 3.0 R&S ®ESCI71 MHz to 5 MHz 2.5 5 MHz to 1 GHz 2.0 1 GHz to 7 GHz3.0RF attenuation ≥ 10 dB, AC-coupledR&S ®ESCI9 kHz to 100 kHz typ. 2.5 100 kHz to 1 GHz < 1.2 1 GHz to 3 GHz < 1.5R&S ®ESCI71 MHz to 5 MHz typ. 2.5 5 MHz to 1 GHz < 1.2 1 GHz to3 GHz < 1.5 VSWR 3 GHz to 7 GHz< 2.0Setting range of attenuator 0 dB to 70 dB in steps of 5 dBProbe power supply Supply voltages+15 V DC, –12.6 V DC and ground, max. 150 mA, nominalVersion 03.00, June 2009Rohde & Schwarz R&S ®ESCI/ESCI7 EMI Test Receiver 9Power supply for antennas, etc. Supply voltages±10 V DC and ground, max. 100 mA, nominalUSB interface2 ports, type A plug, version 2.0AF output Connector3.5 mm jackImpedance 10 ΩOpen-circuit voltageadjustable up to 1.5 VInputs and outputs (rear panel)IF 20.4 MHz Connector BNC female Impedance50 Ωmixer level > –60 dBm RBW ≤ 100 kHz or FFT –10 dBm at reference level LevelRBW > 100 kHz0 dBm at reference levelReference frequency outputConnector BNC female Impedance 50 Ω Output frequency 10 MHzLevel 0 dBm, nominalReference frequency inputConnector BNC female Input frequency 10 MHzRequired level 0 dBm from 50 ΩPower supply for noise sourceConnector BNC female Output voltage switchable 28 V, nominalExternal trigger/gate inputConnector BNC female Impedance > 10 k Ω Trigger voltage 1.4 V (TTL)IEC/IEEE bus remote control interface in line with IEC 625-2 (IEEE 488.2)Connector 24-pin Amphenol female Command set SCPI 1997.0Interface functionsSH1, AH1, T6, SR1, RL1, PP1, DC1, DT1, C0Serial interfaceRS-232-C (COM), 9-pin D-SubPrinter interfaceparallel (Centronics compatible)upper connector type A plug, version 1.1 USB interface lower connectortype A plug, version 2.0External monitor (VGA) ConnectorVGA-compatible, 15-pin D-SubUser interface 25-pin D-SubVersion 03.00, June 200910 Rohde & Schwarz R&S ®ESCI/ESCI7 EMI Test ReceiverGeneral dataDisplay 21 cm TFT color display Resolution 640 × 480 pixel (VGA)Pixel error rate< 2 × 10–5Mass memory1.44 Mbyte 3½'' disk drive, hard disk Data storage R&S ®ESCI only> 500 instrument setups and tracesTemperature ranges+5 °C to + 40 °C Operating temperature range with R&S ®ESCI-B20 option 0 °C to +50 °C+5 °C to + 45 °C Permissible temperature range with R&S ®ESCI-B20 option 0 °C to +55 °C Storage temperature range –40 °C to +70 °CClimatic loading+40 °C at 95 % relative humidity (EN 60068-2-30)Mechanical resistance Sinusoidal vibration0.5 g from 5 Hz to 150 Hz, max. 2 g at 55 Hz,in line with EN 60068-2-6, EN 61010-1, MIL-T-28800D, class 510 Hz to 100 Hz, acceleration 1 g (rms) Random vibration with R&S ®ESCI-B20 option 10 Hz to 300 Hz, acceleration 1.9 g (rms) Shock40 g shock spectrum,in line with MIL-STD-810C and MIL-T-28800D, classes 3 and 5operation with external reference 2 years Recommended calibration interval operation with internal reference1 yearPower supply AC supply100 V to 240 V AC, 50 Hz to 400 Hz, 3.1 A to 1.3 A,class of protection I in line with VDE 411 Power consumption typ. 70 VASafety in line with EN 61010-1, UL 3111-1, CSA C22.2 No. 1010-1, IEC 1010-1 EMCEMC Directive 2004/108/EC including:EN 61326 class B (emission),CISPR 11/EN 55011 group 1 class B (emission)EN 61326 table A.1 (immunity, industrial)Test marksVDE, GS, CSA, CSA-NRTL/CDimensions and weight DimensionsW × H × D 412 mm × 197 mm × 417 mm (16.22 in × 7.76 in × 16.42 in) R&S ®ESCI10.5 kg (23.15 lb) Weight without options R&S ®ESCI712.4 kg (27.34 lb)Version 03.00, June 2009Rohde & Schwarz R&S ®ESCI/ESCI7 EMI Test Receiver 11Ordering informationDesignation Type Order No.EMI Test Receiver 9 kHz to 3 GHz R&S ®ESCI 1166.5950.03EMI Test Receiver 9 kHz to 7 GHz R&S ®ESCI7 1166.5950.07 Accessories suppliedPower cable, operating manual, service manualOptionsDesignation Type Order No.Rugged Case, with carrying handle R&S ®FSP-B1 1129.7998.02OCXO Reference Frequency R&S ®FSP-B4 1129.6740.02TV Trigger/RF Power Trigger R&S ®FSP-B6 1129.8594.02Internal Tracking Generator, I/Q Modulator R&S ®FSP-B9 1129.6991.02External Generator Control R&S ®FSP-B10 1129.7246.03LAN Interface 100BaseT R&S ®FSP-B16 1129.8042.03Expanded Environmental Specifications R&S ®ESCI-B20 1155.1606.14DC Power Supply R&S ®FSP-B30 1155.1158.02Battery Pack R&S ®FSP-B31 1155.1258.02Spare Battery Pack R&S ®FSP-B32 1155.1506.02Service OptionsDesignation Type Order No.R&S ®ESCIOne-Year Repair Service following the warranty periodR&S ®RO2ESCI 1166.5950.S16 Two-Year Repair Service following the warranty periodR&S ®RO3ESCI 1166.5950.S12 Four-Year Repair Service following the warranty periodR&S ®RO5ESCI 1166.5950.S14 Two-Year Calibration Service R&S ®CO2ESCI 1166.5950.S15Three-Year Calibration Service R&S ®CO3ESCI 1166.5950.S11Five-Year Calibration Service R&S ®CO5ESCI 1166.5950.S13R&S ®ESCI7One-Year Repair Service following the warranty periodR&S ®RO2ESCI7 1166.5950.S26 Two-Year Repair Service following the warranty periodR&S ®RO3ESCI7 1166.5950.S22 Four-Year Repair Service following the warranty periodR&S ®RO5ESCI7 1166.5950.S24 Two-Year Calibration Service R&S ®CO2ESCI7 1166.5950.S25Three-Year Calibration Service R&S ®CO3ESCI7 1166.5950.S21Five-Year Calibration Service R&S ®CO5ESCI7 1166.5950.S23For product brochure, see:• PD 0758.1558.12 (ESCI) • PD 5214.2762.12 (ESCI7)and About Rohde & SchwarzRohde & Schwarz is an independent group of companies specializing in electronics. It is a leading supplier of solu-tions in the fields of test and measurement, broadcasting, radiomonitoring and radiolocation, as well as secure com-munications. Established 75 years ago, Rohde & Schwarz has a global presence and a dedicated service network in over 70 countries. Company headquarters are in Munich, Germany.Regional contactEurope, Africa, Middle East+49 1805 12 42 42* or +49 89 4129 137 74 *********************************North America1888TESTRSA(188****8772)**********************************.com Latin America +1 410 910 79 88************************************Asia/Pacific+65 65 13 04 88**************************************Rohde & Schwarz GmbH & Co. KG Mühldorfstraße 15 | 81671 MünchenPhone +49 89 41 290 | Fax +49 89 41 29 121 R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG Trade names are trademarks of the owners | Printed in Germany (sv) PD 0758.1558.22 | Version 03.00 | June 2009 | R&S®ESCI/ESCI7 Subject to change*0.14 €/min within German wireline network; rates may vary in othern etworks (wireline and mobile) and countries. Certified Environmental SystemISO 14001Certified Quality SystemISO 9001。
MAX6360MTUT-T中文资料
MAX6358_ _UT-T -40°C to +85°C 6 SOT23-6 MAX6359_ _UT-T -40°C to +85°C 6 SOT23-6 MAX6360_ _UT-T -40°C to +85°C 6 SOT23-6 SV 2.93 1.58 * The _ _ are placeholders for the threshold voltage levels of the UW 2.78 1.67 devices. Substitute the part number suffix in the Voltage ThresUV 2.78 1.58 hold Levels table for the desired voltage level. All devices are available in tape-and-reel only. There is a 2500 piece minimum RW 2.63 1.67 order increment for the SOT package. RV 2.63 1.58 Devices are available in both leaded and lead-free packaging. Note: Standard versions are shown in bold. Sample stock is genSpecify lead-free by replacing “-T” with “+T” when ordering. erally held on the standard versions only. Contact factory for availPin Configurations appear at end of data sheet. ability. Selector Guide appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products 1
太阳能集热工程智能控制器
太阳能集热工程智能控制器Installation and Operating Manual型号：SR638F8使用前请仔细阅读说明书!目录目录-----------------------------------------------------------------------1 1.1 安装和试运转-----------------------------------------------------------4 1.2 关于手册--------------------------------------------------------------4 1.3 责任免除--------------------------------------------------------------41.4 符号描述--------------------------------------------------------------42.控制器显示器、主板介绍--------------------------------------------------5 2.1 显示器图--------------------------------------------------------------5 2.2 主板介绍--------------------------------------------------------------52.3 远程控制示意图--------------------------------------------------------63.控制器安装--------------------------------------------------------------6 3.1 控制器显示面板的安装--------------------------------------------------6 3.2 控制器主板的安装------------------------------------------------------7 3.3 压力变送器的安装------------------------------------------------------7 3.4 电极式水位传感器的安装--------------------------------------------------9 3.4 电路连接--------------------------------------------------------------93.5 安装温度传感器的注意事项----------------------------------------------104.试运行------------------------------------------------------------------11 4.1 设置时钟/星期---------------------------------------------------------11 4.2 设置太阳能系统--------------------------------------------------------11 4.3 功能设置菜单结构-----------------------------------------------------124.4 功能菜单说明----------------------------------------------------------135.太阳能系统描述----------------------------------------------------------14 5.1 系统1（1个集热器阵列-1个水箱）----------------------------------------14 5.2 系统2（1个集热器阵列-2个水箱）----------------------------------------16 5.3 系统3（1个集热器阵列–3个水箱）---------------------------------------18 5.4 系统4（2个集热器阵列-1个水箱）----------------------------------------20 5.5 系统5（2个集热器阵列-2个水箱）----------------------------------------22 5.6 系统6（2个集热器阵列-3个水箱）----------------------------------------246.功能操作及参数设置------------------------------------------------------26 6.1进入主菜单-------------------------------------------------------------26 6.2 太阳能系统的选择------------------------------------------------------26 6.3 温差调节的开启和关闭功能----------------------------------------------27 6.4 HIGH高、中、低三个水位设定-------------------------------------------28 6.4.1TAK1水箱1水位设定------------------------------------------------28 6.4.2TAK2水箱2水位设定------------------------------------------------28 6.5 TEMP 温度主菜单-------------------------------------------------------29 6.5.1 CFR集热器防冻保护--------------------------------------------------30 6.5.2 SMX1水箱温度最大值-------------------------------------------------30 6.5.3 CMN 集热器低温保护-------------------------------------------------31 6.5.4 WT1水箱1温控上水温度设定-------------------------------------------32 6.5.5 WT2水箱2温控上水温度设定-------------------------------------------32 6.5.6 AH10伴热带1温度控制功能--------------------------------------------33 6.6 FUN 辅助功能---------------------------------------------------------34 6.6.1 CIRC用水端循环泵开启/关闭功能--------------------------------------34 6.6.2 WMOD上水模式设定--------------------------------------------------35 6.6.3 AUX温差控制功能 -------------------------------------------------35 6.6.4 AHEA智能加热模式开启/关闭功能------------------------------------35 6.7 tHE1水箱1三时段定时加热设定-----------------------------------------36 6.8 tHE2水箱2三时段定时加热设定-----------------------------------------39 6.9 tWA1 水箱1六时段定时上水设定----------------------------------------39 6.10 tWA2 水箱2六时段定时上水设定---------------------------------------41 6.11 tCYC 用水端循环泵六时段温度/时间设定-------------------------------41 6.12 tIMO 伴热带三时段时间设定------------------------------------------46 6.13 HND 手动功能-------------------------------------------------------48 6.14 PASS 密码设置------------------------------------------------------51 6.15 RSET恢复出厂设置：------------------------------------------------526.16 开/关键-----------------------------------------------------------52 6.17 手动加热功能---------------------------------------------------------52 6.18 手动上水功能---------------------------------------------------------536.19 查询功能-------------------------------------------------------------537.保护功能----------------------------------------------------------------54 7.1 断电记忆保护----------------------------------------------------------547.2 屏幕保护--------------------------------------------------------------548.故障--------------------------------------------------------------------54 8.1 故障保护--------------------------------------------------------------548.2 PT1000/NTC10K数值表--------------------------------------------------559.质量保障----------------------------------------------------------------5610.产品技术参考数据-------------------------------------------------------5611.装箱清单---------------------------------------------------------------561.安全要求1.1 安装和试运转●当铺设线路时，确保不损坏建筑物结构上的防火措施。
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General Description The MAX6381–MAX6390 microprocessor (µP) supervisory circuits monitor power-supply voltages from +1.8V to +5.0V while consuming only 3µA of supply current at +1.8V. Whenever V CC falls below the factory-set reset thresholds, the reset output asserts and remains assert-ed for a minimum reset timeout period after V CC rises above the reset threshold. Reset thresholds are available from +1.58V to +4.63V, in approximately 100mV incre-ments. Seven minimum reset timeout delays ranging from 1ms to 1200ms are available.The MAX6381/MAX6384/MAX6387 have a push-pull active-low reset output. The MAX6382/MAX6385/ MAX6388 have a push-pull active-high reset output, and the MAX6383/MAX6386/MAX6389/MAX6390 have an open-drain active-low reset output. The MAX6384/MAX6385/MAX6386 also feature a debounced manual reset input (with internal pullup resistor). The MAX6387/MAX6388/MAX6389 have an auxiliary input for monitoring a second voltage. The MAX6390 offers a manual reset input with a longer V CC reset timeout period (1120ms or 1200ms) and a shorter manual reset timeout (140ms or 150ms).The MAX6381/MAX6382/MAX6383 are available in 3-pin SC70 and6-pinµDFN packages and the MAX6384–MAX6390 are available in 4-pin SC70 andFeatures♦Factory-Set Reset Threshold Voltages Rangingfrom +1.58V to +4.63V in Approximately 100mVIncrements♦±2.5% Reset Threshold Accuracy OverTemperature (-40°C to +125°C)♦Seven Reset Timeout Periods Available: 1ms,20ms, 140ms, 280ms, 560ms, 1120ms,1200ms (min)♦3 Reset Output OptionsActive-Low Push-PullActive-High Push-PullActive-Low Open-Drain♦Reset Output State Guaranteed ValidDown to V CC= 1V♦Manual Reset Input (MAX6384/MAX6385/MAX6386)♦Auxiliary RESET IN(MAX6387/MAX6388/MAX6389)♦V CC Reset Timeout (1120ms or 1200ms)/ManualReset Timeout (140ms or 150ms) (MAX6390)♦Negative-Going V CC Transient Immunity♦Low Power Consumption of 6µA at +3.6Vand 3µA at +1.8V♦Pin Compatible withMAX809/MAX810/MAX803/MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348,and MAX6711/MAX6712/MAX6713♦Tiny 3-Pin/4-Pin SC70 and 6-Pin µDFN PackagesMAX6381–MAX6390 SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset Circuits ________________________________________________________________Maxim Integrated Products1Pin Configurations19-1839; Rev 4; 4/07Ordering InformationOrdering Information continued at end of data sheet.Typi cal Operati ng Ci rcui t appears at end of data sheet.Selector Guide appears at end of data sheet.after "XR", "XS", or "LT." Insert reset timeout delay (see ResetTimeout Delay table) after "D" to complete the part number.Sample stock is generally held on standard versions only (seeStandard Versions table). Standard versions have an orderincrement requirement of 2500 pieces. Nonstandard versionshave an order increment requirement of 10,000 pieces.Contact factory for availability of nonstandard versions.+Denotes a lead-free package.For pricing, delivery, and ordering information,please contact Maxim Direct at 1-888-629-4642,or visit Maxim’s website at .ComputersControllersIntelligent InstrumentsCritical µP and µCPower MonitoringPortable/Battery-Powered EquipmentDual Voltage SystemsM A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset CircuitsABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = full range, T A = -40°C to +125°C, unless otherwise specified. Typical values are at T A = +25°C.) (Note 1)Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.V CC to GND..........................................................-0.3V to +6.0V RESET Open-Drain Output....................................-0.3V to +6.0V RESET , RESET (push-pull output)..............-0.3V to (V CC + 0.3V)MR , RESET IN.............................................-0.3V to (V CC + 0.3V)Input Current (V CC ).............................................................20mA Output Current (all pins).....................................................20mAContinuous Power Dissipation (T A = +70°C)3-Pin SC70 (derate 2.9mW/°C above +70°C)..............235mW 4-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW 6-Pin µDFN (derate 2.1mW/°C above +70°C)..........167.7mW Operating Temperature Range .........................-40°C to +125°C Storage Temperature Range.............................-65°C to +150°C Lead Temperature (soldering, 10s).................................+300°CMAX6381–MAX6390SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset Circuits_______________________________________________________________________________________3M A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits 4______________________________________________________________________________________Typical Operating Characteristics(T A = +25°C, unless otherwise noted.)215436789-40-105-25203550658095110125SUPPLY CURRENT vs. TEMPERATURE(NO LOAD)TEMPERATURE (°C)S U P P L Y C U R R E N T (µA )25292735333137394143-40-105-25203550658095110125POWER-DOWN RESET DELAYvs. TEMPERATURETEMPERATURE (°C)P O W E R -D O W N R E S E T D E L A Y (µs )0.940.980.961.021.001.061.041.08-40-10520-253550658095110125NORMALIZED POWER-UP RESET TIMEOUTvs. TEMPERATUREM A X 6381/90 t o c 03TEMPERATURE (°C)N O R M A L I Z E D R E S E T T I M E O U T P E R I O D0.9900.9851.0150.9950.9901.0001.0051.0101.020-40-10520-253550958011065125M A X 6381/90 t o c 04TEMPERATURE (°C)N O R M A L I Z E D R E S E T TH R E S H O L D NORMALIZED RESET THRESHOLDvs. TEMPERATURE00.40.20.80.61.01.2063912OUTPUT-VOLTAGE LOW vs. SINK CURRENTI SINK (mA)V O L (V )01.00.52.01.52.53.00500750250100012501500OUTPUT-VOLTAGE HIGH vs. SOURCE CURRENTI SOURCE (µA)V O H (V )45001100010010MAXIMUM TRANSIENT DURATION vs. RESET COMPARATOR OVERDRIVE15050350250500200100400300RESET COMPARATOR OVERDRIVE, V TH - V CC (mV)M A X I M U M T R A N S I E N T D U R A T I O N (µs )3.53.93.74.54.34.14.74.95.35.15.5-40-105-25203550658095110125RESET IN TO RESET DELAYvs. TEMPERATUREM A X 6381/90 t o c 08TEMPERATURE (°C)R E S E T I N D E L A Y (µs )MAX6381–MAX6390SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset CircuitsPin DescriptionM A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits 6_______________________________________________________________________________________Detailed DescriptionRESET OutputA µP reset input starts the µP in a known state. These µP supervisory circuits assert reset to prevent code execution errors during power-up, power-down, or brownout conditions.Reset asserts when V CC is below the reset threshold;once V CC exceeds the reset threshold, an internal timer keeps the reset output asserted for the reset timeout period. After this interval, reset output deasserts. Reset output is guaranteed to be in the correct logic state for V CC ≥1V.Manual Reset Input (MAX6384/MAX6385/MAX6386/MAX6390)Many µP-based products require manual reset capabil-ity, allowing the operator, a test technician, or external logic circuitry to initiate a reset. A logic low on MR asserts reset. Reset remains asserted while MR is low,and for the reset active timeout period (t RP ) after MR returns high. This input has an internal 63k Ωpullup resistor (1.56k Ωfor MAX6390), so it can be left uncon-nected if it is not used. MR can be driven with TTL or CMOS logic levels, or with open-drain/collector outputs.Connect a normally open momentary switch from MR to G ND to create a manual-reset function; external debounce circuitry is not required. If MR is driven from long cables or if the device is used in a noisy environ-ment, connecting a 0.1µF capacitor from MR to G ND provides additional noise immunity.RESET IN Comparator(MAX6387/MAX6388/MAX6389)RESET IN is compared to an internal +1.27V reference.If the voltage at RESET IN is less than 1.27V, reset asserts. Use the RESET IN comparator as a user-adjustable reset detector or as a secondary power-sup-ply monitor by implementing a resistor-divider at RESET IN (shown in Figure 1). Reset asserts when either V CC or RESET IN falls below its respective threshold volt-age. Use the following equation to set the threshold:V INTH = V THRST (R1/R2 + 1)where V THRST = +1.27V. To simplify the resistor selec-tion, choose a value of R2 and calculate R1:R1 = R2 [(V INTH /V THRST ) - 1]Since the input current at RESET IN is 50nA (max),large values can be used for R2 with no significant loss in accuracy.___________Applications InformationNegative-Going V CC TransientsIn addition to issuing a reset to the µP during power-up,power-down, and brownout conditions, the MAX6381–MAX6390 are relatively immune to short dura-tion negative-going V CC transients (glitches).The Typical Operating Characteristics section shows the Maximum Transient Durations vs. Reset Comparator Overdrive, for which the MAX6381–MAX6390 do not generate a reset pulse. This graph was generated usinga negative-going pulse applied to V CC , starting above the actual reset threshold and ending below it by the magnitude indicated (reset comparator overdrive). The graph indicates the typical maximum pulse width a neg-ative-going V CC transient may have without causing a reset pulse to be issued. As the magnitude of the tran-sient increases (goes farther below the reset threshold),the maximum allowable pulse width decreases. A 0.1µF capacitor mounted as close as possible to V CC provides additional transient immunity.Ensuring a Valid RESET Output Down to V CC = 0VThe MAX6381–MAX6390 are guaranteed to operate properly down to V CC = 1V. In applications that require valid reset levels down to V CC = 0V, a pulldown resistor to active-low outputs (push/pull only, Figure 2) and a pullup resistor to active-high outputs (push/pull only)will ensure that the reset line is valid while the reset out-put can no longer sink or source current. This schemedoes not work with the open-drain outputs of the MAX6383/MAX6386/MAX6389/MAX6390. The resistor value used is not critical, but it must be small enough not to load the reset output when V CC is above the reset threshold. For most applications, 100k Ωis ade-quate.MAX6381–MAX6390SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset Circuits_______________________________________________________________________________________7M A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits 8_______________________________________________________________________________________Selector GuideOrdering Information (continued)Note:Insert reset threshold suffix (see Reset Threshold table)after "XR", "XS", or "LT." Insert reset timeout delay (see Reset Timeout Delay table) after "D" to complete the part number.Sample stock is generally held on standard versions only (see Standard Versions table). Standard versions have an order increment requirement of 2500 pieces. Nonstandard versions have an order increment requirement of 10,000 pieces.Contact factory for availability of nonstandard versions.*MAX6390 is available with D4 or D7 timing only.+Denotes a lead-free package.MAX6381–MAX6390SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset Circuits_______________________________________________________________________________________9Chip InformationTRANSISTOR COUNT: 647PROCESS: BiCMOSPin Configurations (continued)M A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits 10______________________________________________________________________________________Package Information(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)MAX6381–MAX6390SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset Circuits______________________________________________________________________________________11Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)M A X 6381–M A X 6390SC70/µDFN, Single/Dual Low-Voltage, Low-Power µP Reset Circuits 12______________________________________________________________________________________Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)SC70/µDFN, Single/Dual Low-Voltage,Low-Power µP Reset CircuitsMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600____________________13©2007 Maxim Integrated Productsis a registered trademark of Maxim Integrated Products, Inc.MAX6381–MAX6390Package Information (continued)(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,go to /packages .)Revision HistoryPages changed at Rev 4: Title on all pages, 1, 2, 5,7–13。