FAN6753MY;FAN6753NY;中文规格书,Datasheet资料

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FAN6753

FeaturesHigh-Voltage StartupLow Operating Current: 2.7mAAdaptive Decreasing PWM Frequency to 22KHz Built-in Full-Range Frequency Hopping to Reduce EMI EmissionFixed PWM Frequency: 65KHzPeak-Current-Mode ControlCycle-by-Cycle Current LimitingLeading-Edge Blanking (LEB)Synchronized Slope CompensationInternal Auto-Recovery Open-Loop ProtectionGATE Output Maximum Voltage Clamp: 18VV DD Under-Voltage Lockout (UVLO)V DD Over-Voltage Protection (OVP),Auto Recovery / Latch for OptionInternal Auto-Recovery Sense Short-Circuit Protection for OptionConstant Power Limit (Full AC Input Range)Internal OTP Sensor with HysteresisBuilt-in 5ms Soft-Start FunctionBuilt-in LATCH Pin Pull HIGH (> 5.2V)Latch FunctionApplicationsGeneral-purpose switch-mode power supplies and flyback power converters, including:Power AdaptersOpen-Frame SMPS DescriptionThe highly integrated FAN6753 PWM controller provides several features to enhance the performance of flyback converters.To minimize standby power consumption, a proprietary adaptive green-mode function provides frequency modulation at light-load conditions. To avoid acoustic-noise problems, the minimum PWM frequency is set above 22KHz. This green-mode function enables the power supply to meet international power conservation requirements. With the internal high-voltage startup circuitry, the power loss due to bleeding resistors is also eliminated. To further reduce power consumption, FAN6753 is manufactured using the BiCMOS process, which allows an operating current of only 2.7mA.FAN6753 integrates a full-range frequency-hopping function internally that helps reduce EMI emission of a power supply with minimum line filters. Its built-in synchronized slope compensation achieves stable peak-current-mode control. The proprietary internal line compensation ensures constant output power limit over a wide AC input voltage range, from 90V AC to 264V AC. FAN6753 provides many protection functions. In addition to cycle-by-cycle current limiting, the internal open-loop protection circuit ensures safety should an open-loop or output short-circuit failure occur. PWM output is disabled until V DD drops below the UVLO lower limit, when the controller starts up again. As long as V DD exceeds ~26V, the internal OVP circuit is triggered. Available in the 8-pin SOP and DIP packages.Ordering InformationFigure 2. Pin Configuration (Top View)Pin DefinitionsPin #NameDescription1 LATCH For external latch circuit used. When V LATCHth > 5.2V and after 100µs, IC is latched off.10K Ω to GND is recommended. Internal has a sourcing current of 100µA (I LATCH ), 100µA×10K Ω. The voltage on this pin is 1V (under V LATCHth =5.2V). 2FBThe signal from the external compensation circuit is fed into this pin. The PWM duty cycle is determined in response to the signal on this pin and the current-sense signal on the SENSE pin.3 SENSECurrent sense. The sensed voltage is used for peak-current-mode control and cycle-by-cyclecurrent limiting. 4GND Ground. 5GATEThe totem-pole output driver. Soft-driving waveform is implemented for improved EMI. 6 V DDPower supply. The internal protection circuit disables PWM output as long as V DD exceeds theOVP trigger point.7 NC No connection.Internal Block DiagramFigure 4. Functional Block DiagramHopping Range ±3.7 ±4.2 ±4.7t H-OP Hopping Period 4.4 msf OSC-G Green-ModeFrequency 18 22 26 KHz f DV Frequency Variation vs. V DD Deviation V DD=11V to 22V 5 %f DT Frequency Variation vs. TemperatureDeviation T A=-20 to 85°C5 %Continued on the following page…PWM Frequencyf OSCV STHFL Current Limit Flatten Threshold Voltage Duty>40% 0.87 0.90 0.93 VV STHVA Current Limit Valley Threshold Voltage V STHFL–V STHVADuty=0%0.30 0.34 0.38 Vt PD Delay to Output 100 200 nst LEB Leading-Edge Blanking Time 100 140 180 nsT SS Period During Soft-Startup Time Startup Time 4.3 5.0 5.7 msGATE SectionDCY MAX Maximum Duty Cycle 60 65 70 %V GATE-L Gate Low Voltage V DD=15V, I O=50mA 1.5 V V GATE-H Gate High Voltage V DD=12V, I O=50mA 8 V t r Gate Rising Time V DD=15V, C L=1nF 150 250 350 nst f Gate Falling Time V DD=15V, C L=1nF 30 50 90 nsI GATE-SOURCE Gate Source Current V DD=15V, GATE=6V 250 mAV GATE-CLAMP Gate Output Clamping Voltage V DD22V18VOver-Temperature Protection Section (OTP)vs. Temperaturevs. Temperature01234567-40-30-15025507585100125Temperature (℃)I H V (m A )0246810-40-30-15025507585100125Temperature (℃)I H V -L C (μA )Figure 10. Supply Current Drawn from HV Pin (I HV )vs. TemperatureFigure 11. HV Pin Leakage Current After Startup(I HV-LC ) vs. Temperature666870)687072%)Figure 16. Output Current from LATCH Pin (I LATCH )vs. TemperatureFigure 17. Latch-Off Threshold Voltage (V LATCHth )vs. Temperature2525.52626.52727.528-40℃-30℃-15℃0℃25℃50℃75℃85℃100℃125℃Temperature (℃)V D D _O V P (V )Figure 18. V DD Over-Voltage Protection (V DD-OVP )vs. TemperatureCurrent Sensing / PWM Current Limiting Peak-current-mode control is utilized to regulate output voltage and provide pulse-by-pulse current limiting. The switch current is detected by a sense resistor into the SENSE pin. The PWM duty cycle is determined by this current-sense signal and V FB, the feedback voltage. When the voltage on the SENSE pin reaches around V COMP=(V FB–0.6)/4, the switch cycle is terminated immediately. V COMP is internally clamped to a variable voltage around 0.9V for output power limit.Leading-Edge Blanking (LEB)Each time the power MOSFET is switched on, a turn-on spike occurs on the sense resistor. To avoid premature termination of the switching pulse, a leading-edge blanking time is built in. During this blanking period, the current-limit comparator is disabled and cannot switch off the gate driver.Under-Voltage Lockout (UVLO)The turn-on and turn-off thresholds are fixed internally at 15.5V and 9.5V, respectively. During startup, the hold-up capacitor must be charged to 15.5V through the startup resistor to enable the IC. The hold-up capacitor continues to supply V DD before the energy can be delivered from auxiliary winding of the main transformer. V DD must not drop below 9.5V during startup. This UVLO hysteresis window ensures that the hold-up capacitor is adequate to supply V DD during startup. GATE drive is turned off after a small delay, t PD. This delay introduces an additional current proportional to t PD • V IN / L P. Since the delay is nearly constant regardless of the input voltage V IN, higher input voltage results in a larger additional current and the output power limit is higher than under low input line voltage. To compensate this variation for a wide AC input range, a sawtooth power-limiter is designed to solve the unequal power-limit problem. The power limiter is designed as a positive ramp signal fed to the inverting input of the OCP comparator. This results in a lower current limit at high-line inputs than at low-line inputs.V DD Over-Voltage Protection (OVP)V DD over-voltage protection is built in to prevent damage due to abnormal conditions. If the V DD voltage is over the over-voltage protection voltage (V DD-OVP) and lasts for t D-VDDOVP, the PWM pulses are disabled until the V DD voltage drops below the UVLO, then starts again. Over-voltage conditions are usually caused by open feedback loops.External Latch Function (LATCH Pin)The LATCH pin can be used to control the FAN6753 entering latch mode by pulling this pin over 5.2V for 100µs. If floating, the LATCH pin is internally pulled HIGH to 3.5V. It is not recommended to float or short the LATCH pin to GND. This pin also includes a test mode to disable the jitter function. LATCH pin internally sources 100µA, so place a resistor in series to GND. Do not let this voltage exceed 5.2V for the FAN6753 to function normally.8°0°NOTES: UNLESS OTHERWISE SPECIFIEDA) THIS PACKAGE CONFORMS TO JEDECMS-012, VARIATION AA, ISSUE C,B) ALL DIMENSIONS ARE IN MILLIMETERS.C) DIMENSIONS DO NOT INCLUDE MOLDFLASH OR BURRS.D) LANDPATTERN STANDARD: SOIC127P600X175-8M.E) DRAWING FILENAME: M08AREV13SEATING PLANE0.10CCGAGE PLANEx 45°DETAIL ASCALE: 2:10.510.331.75 MAX0.250.190.360.500.25R0.10R0.100.900.406(1.04)OPTION A - BEVEL EDGE OPTION B - NO BEVEL EDGE2.547.620.560.3551.651.273.009.9577.870.3560.20NOTES: UNLESS OTHERWISE SPECIFIEDA) THIS PACKAGE CONFORMS TOJEDEC MS-001 VARIATION BAB) ALL DIMENSIONS ARE IN MILLIMETERS.C) DIMENSIONS ARE EXCLUSIVE OF BURRS,MOLD FLASH, AND TIE BAR EXTRUSIONS.D) DIMENSIONS AND TOLERANCES PERASME Y14.5M-1994E) DRAWING FILENAME AND REVSION: MKT-N08FREV2.。

FAN5333ASX;FAN5333BSX;FAN5333SX;中文规格书,Datasheet资料

FAN5333A/FAN5333B High Efﬁciency, High Current Serial LED Driver with 30V Integrated SwitchFAN5333A/FAN5333B High Efﬁciency, High Current Serial LED Driver with 30V Integrated SwitchFAN5333A/FAN5333B High Efﬁciency, High Current Serial LED Driver with 30V Integrated Switch Absolute Maximum Ratings (Note1)Recommended Operating Conditions Notes:1.Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Absolute maximum ratings apply individually only, not in ing EIA/JESD22A114B (Human Body Model) and EIA/JESD22C101-A (Charge Device Model).3.This load capacitance value is required for the loop stability. Tolerance, temperature variation, and voltage dependency of the capacitance must be considered. Typically a 1µF ceramic capacitor is required to achieve specified value at V OUT = 30V.Parameter Min Max Unit V IN to GND 6.0V FB, SHDN to GND-0.3V IN + 0.3V SW to GND-0.335V Lead Soldering T emperature (10 seconds)300°C Junction T emperature150°C Storage T emperature-55150°C Thermal Resistance (ΘJA)210°C/W Electrostatic Discharge Protection (ESD) Level (Note 2)HBM2kV CDM1Parameter Min Typ Max Unit Input Voltage 1.8 5.5V Output Voltage V IN30V Operating Ambient T emperature-402585°C Output Capacitance Rated at the Required Output (Note 3) for maximum load current 0.47µFFAN5333A/FAN5333B High Efﬁciency, High Current Serial LED Driver with 30V Integrated SwitchFAN5333A/FAN5333B High Efﬁciency, High Current Serial LED Driver with 30V Integrated SwitchFAN5333A/FAN5333B High Efﬁciency, High Current Serial LED Driver with 30V Integrated Switch Time (100µs/div)L = 10µH C IN = 10µF C OUT = 1µF V IN = 2.7VFAN5333A/FAN5333B High Efﬁciency, High Current Serial LED Driver with 30V Integrated SwitchFAN5333A/FAN5333B High Efﬁciency, High Current Serial LED Driver with 30V Integrated SwitchFAN5333A/FAN5333B High Efﬁciency, High Current Serial LED Driver with 30V Integrated SwitchFAN5333A/FAN5333B High Efﬁciency, High Current Serial LED Driver with 30V Integrated Switch分销商库存信息:FAIRCHILDFAN5333ASX FAN5333BSX FAN5333SX。

FAN6755-AN-6755

LEB
FAN6755W 700 V Line Sensing Using VIN Pin Adjusted by VIN Pin (0.83 V / 0.7 V) No 700 mA 15 kΩ 2 mA 290 ns 7.8 V 75% 5.5 ms 7-Pin SOP Package
Line Voltage Compensation for Pulse-by-Pulse Current Limit (V /V )
Table 1.
Comparison of FAN6753 and FAN6755W
FAN6753 HV Pin Input Voltage Brownout Protection 500 V No Saw-Limit (0.9 V / 0.56 V) VSENSE<0.15 V Longer than 150 µs 250 mA 5 kΩ )

AN-6755
APPLICATION NOTE
N EMI Filter L
VoVo+
+ +
1 7
HV
VIN
VDD 6 GATE 5
+
2
FB
4
SENSE 3
FAN6755
Figure 1. Typical Application
HV 7
Restart Protection OTP OVP OLP VIN-OVP Soft Driver VPWM
OVP
3
SENSE
Green Mode
Current Limit Comparator VLimit PWM Comparator Max. Duty VPWM
VDD-OVP

MAX6753中文资料

General DescriptionThe MAX6746–MAX6753 low-power microprocessor (µP) supervisory circuits monitor single/dual system supply voltages from 1.575V to 5V and provide maxi-mum adjustability for reset and watchdog functions.These devices assert a reset signal whenever the V CC supply voltage or RESET IN falls below its reset thresh-old or when manual reset is pulled low. The reset output remains asserted for the reset timeout period after V CC and RESET IN rise above the reset threshold. The reset function features immunity to power-supply transients.The MAX6746–MAX6753 have ±2% factory-trimmed reset threshold voltages in approximately 100mV incre-ments from 1.575V to 5.0V and/or adjustable reset threshold voltages using external resistors.The reset and watchdog delays are adjustable with external capacitors. The MAX6746–MAX6751 contain a watchdog select input that extends the watchdog time-out period by 128x. The MAX6752/MAX6753 contain a window watchdog timer that looks for activity outside an expected window of operation.The MAX6746–MAX6753 are available with a push-pull or open-drain active-low RESET output. The MAX6746–MAX6753 are available in an 8-pin SOT23 package and are fully specified over the automotive temperature range (-40°C to +125°C).ApplicationsFeatureso Factory-Set Reset Threshold Options from 1.575V to 5V in ~100mV Increments o Adjustable Reset Threshold Options o Single/Dual Voltage Monitoring o Capacitor-Adjustable Reset Timeout o Capacitor-Adjustable Watchdog Timeout o Min/Max (Windowed) Watchdog Option o Manual Reset Input Optiono Guaranteed RESET Valid for V CC ≥1V o 3.7µA Supply Currento Push-Pull or Open-Drain RESET Output Options o Power-Supply Transient Immunity o Small 8-Pin SOT23 PackagesMAX6746–MAX6753µP Reset Circuits with Capacitor-AdjustableReset/Watchdog Timeout Delay________________________________________________________________Maxim Integrated Products1Pin Configurations19-2530; Rev 2; 8/03For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at .Note:“_ _”represents the two number suffix needed when ordering the reset threshold voltage value for theMAX6746/MAX6747 and MAX6750–MAX6753. The resetthreshold voltages are available in approximately 100mV incre-ments. Table 2 contains the suffix and reset factory-trimmed voltages. All devices are available in tape-and-reel only. There is a 2500-piece minimum order increment for standard ver-sions (see Table 3). Sample stock is typically held on standard versions only. Nonstandard versions require a minimum order increment of 10,000 pieces. Contact factory for availability.Medical Equipment AutomotiveIntelligent Instruments Portable Equipment Battery-PoweredComputers/ControllersEmbedded Controllers Critical µP Monitoring Set-Top Boxes ComputersOrdering InformationSelector Guide appears at end of data sheet.Typical Operating Circuit appears at end of data sheet.M A X 6746–M A X 6753µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay 2_______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSELECTRICAL CHARACTERISTICS(V CC = +1.2V to +5.5V, T A = T MIN to T MAX , unless otherwise specified. Typical values are at V CC = +5V and 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 SRT, SWT, SET0, SET1, RESET IN, WDS, MR ,WDI, to GND.......................................…-0.3V to (V CC + 0.3V)RESET (Push-Pull) to GND......................…-0.3V to (V CC + 0.3V)RESET (Open Drain) to GND.............................…-0.3V to +6.0V Input Current (All Pins).....................................................±20mA Output Current (RESET )...................................................±20mAContinuous Power Dissipation (T A = +70°C)8-Pin SOT23 (derate 8.9mW/°C above +70°C)............714mW Operating Temperature Range .........................-40°C to +125°C Storage Temperature Range ............................-65°C to +150°C Junction Temperature......................................................+150°C Lead Temperature (soldering, 10s).................................+300°CMAX6746–MAX6753µP Reset Circuits with Capacitor-AdjustableReset/Watchdog Timeout Delay_______________________________________________________________________________________3ELECTRICAL CHARACTERISTICS (continued)(V CC = +1.2V to +5.5V, T A = T MIN to T MAX , unless otherwise specified. Typical values are at V CC = +5V and T A = +25°C.) (Note 1)Note 1:Production testing done at T A = +25°C. Over temperature limits are guaranteed by design.M A X 6746–M A X 6753µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay 4_______________________________________________________________________________________Typical Operating Characteristics(V CC = +5V, T A = +25°C, unless otherwise noted.)RESET TIMEOUT PERIOD vs. C SRTM A X 6746 t o c 01C SRT (pF)R E S E T T I M E O U T P E R I O D (m s )10,0001000110100100010,0000.1100100,000WATCHDOG TIMEOUT PERIOD vs. C SWTC SWT (pF)W A T C H D O G T I M E O U T P E R I O D (m s )10,0001000110100100010,000100,0000.1100100,000SUPPLY CURRENT vs. SUPPLY VOLTAGESUPPLY VOLTAGE (V)S U P P L Y C U R R E N T (µA )5432213456016NORMALIZED RESET TIMEOUT PERIODvs. TEMPERATURETEMPERATURE (°C)N O R M A L I Z E D T I M EO U T P E R I O D100755025-250.951.001.051.101.151.200.90-50125NORMALIZED WATCHDOG TIMEOUT PERIODvs. TEMPERATURETEMPERATURE (°C)N O R M A L I Z E D T I M E O U T P E R I O D100755025-250.950.900.851.001.051.101.151.200.80-50125MAXIMUM TRANSIENT DURATION vs. RESET THRESHOLD OVERDRIVERESET THRESHOLD OVERDRIVE (mV)T R A N S I E N T D U R A T I O N (µs )8006004002002550751001251501751000SUPPLY CURRENT vs. TEMPERATURETEMPERATURE (°C)S U P P L Y C U R R E N T (µA )100752550-251234560-50125NORMALIZED RESET IN THRESHOLD VOLTAGEvs. TEMPERATURETEMPERATURE (°C)N O R M A L I Z E D R E S E T T H R E S H O L D V O L T A G E100755025-250.9940.9920.9961.0000.9981.0041.0021.0081.0061.0100.990-50125RESET IN THRESHOLD vs. SUPPLY VOLTAGESUPPLY VOLTAGE (V)R E S E T I N T H R E S H O L D (V )54321.2361.2371.2381.2391.2401.23516MAX6746–MAX6753µP Reset Circuits with Capacitor-AdjustableReset/Watchdog Timeout DelayV CC TO RESET DELAYvs. TEMPERATURE (V CC FALLING)TEMPERATURE (°C)V C C T O R E S E T D E L A Y (µs )100755025-2525.425.826.226.627.025.0-50125RESET AND WATCHDOG TIMEOUT PERIOD vs. V CCV CC (V)T I M E O U T P E R I O D (m s )5.55.04.0 4.52.5 3.0 3.52.00.440.480.520.560.600.401.5 6.0Typical Operating Characteristics (continued)(V CC = +5V, T A = +25°C, unless otherwise noted.)RESET AND WATCHING TIMEOUTPERIOD vs. V CCV CC (V)T I M E O U T P E R I O D (m s )5.55.04.54.03.53.02.52.06.57.07.58.08.59.06.01.5 6.0M A X 6746–M A X 6753µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay 6_______________________________________________________________________________________Detailed DescriptionThe MAX6746–MAX6753 assert a reset signal wheneverthe V CC supply voltage or RESET IN falls below its reset threshold. The reset output remains asserted for the reset timeout period after V CC and RESET IN rise above its respective reset threshold. A watchdog timer triggers a reset pulse whenever a watchdog fault occurs.The reset and watchdog delays are adjustable with external capacitors. The MAX6746–MAX6751 contain a watchdog select input that extends the watchdog time-out period to 128x.The MAX6752 and MAX6753 have a sophisticated watchdog timer that detects when the processor is run-ning outside an expected window of operation. The watchdog signals a fault when the input pulses arrive too early (faster that the selected t WD1timeout period) or too late (slower than the selected t WD2timeout period) (see Figure 1).Reset OutputThe reset output is typically connected to the reset input of a µP. A µP ’s reset input starts or restarts the µP in a known state. The MAX6746–MAX6753 µP supervisory circuits provide the reset logic to prevent code-execu-tion errors during power-up, power-down, and brownout conditions (see the Typical Operating Circuit ).RESET changes from high to low whenever the moni-tored voltage, RESET IN and/or V CC drop below the reset threshold voltages. Once V RESET IN and/or V CC exceeds its respective reset threshold voltage(s),RESET remains low for the reset timeout period, then goes high.RESET is guaranteed to be in the correct logic state for V CC greater than 1V. F or applications requiring valid reset logic when V CC is less than 1V, see the section Ensuring a Valid RESET Output Down to V CC = 0V.RESET IN ThresholdThe MAX6748–MAX6751 monitor the voltage on RESET IN using an adjustable reset threshold (V RESET IN ) set with an external resistor voltage-divider (Figure 2). Use the following formula to calculate the externally monitored voltage (V MON_TH ):V MON_TH = V RESET IN x (R1 + R2) / R2MAX6746–MAX6753µP Reset Circuits with Capacitor-AdjustableReset/Watchdog Timeout Delay_______________________________________________________________________________________7Figure 1. MAX6752/MAX6753 Detailed Watchdog Input Timing RelationshipFigure 2. Calculating the Monitored Threshold Voltage (V MON_TH )M A X 6746–M A X 6753where V MON_TH is the desired reset threshold voltage and V TH is the reset input threshold (1.235V). Resistors R1 and R2 can have very high values to minimize cur-rent consumption due to low leakage currents. Set R2to some conveniently high value (500k Ω, for example)and calculate R1 based on the desired reset threshold voltage, using the following formula:R1 = R2 x (V MON_TH /V RESET IN - 1) (Ω)The MAX6748 and MAX6749 do not monitor V CC sup-ply voltage, therefore, V CC must be greater than 1.5V toguarantee RESET IN threshold accuracy and timing performance. The MAX6748 and MAX6749 can be con-figured to monitor V CC voltage by connecting V CC to V MON_TH.Dual-Voltage Monitoring(MAX6750/MAX6751)The MAX6750 and MAX6751 contain both factory-trimmed threshold voltages and an adjustable reset threshold input, allowing the monitoring of two voltages,V CC and V MON_TH (see Figure 2). RESET is asserted when either of the voltages falls below it respective threshold voltages.Manual Reset (MAX6746/MAX6747)Many µP-based products require manual reset capabil-ity, to allow an operator or external logic circuitry to initi-ate a reset. The manual reset input (MR ) can connect directly to a switch without an external pullup resistor or debouncing network. MR is internally pulled up to V CC and, therefore, can be left unconnected if unused.MR is designed to reject fast, falling transients (typically 100ns pulses) and it must be held low for a minimum of 1µs to assert the reset output. A 0.1µF capacitor from MR to ground provides additional noise immunity. After MR transitions from low to high, reset remains asserted for the duration of the reset timeout period.A manual reset option can easily be implemented with the MAX6748–MAX6751 by connecting a normally open momentary switch in parallel with R2 (Figure 3).When the switch is closed, the voltage on RESET IN goes to zero, initiating a reset. Similar to the MAX6746/MAX6747 manual reset, reset remains asserted while the voltage at RESET IN is zero and for the reset time-out period after the switch is opened.µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay 8_______________________________________________________________________________________Figure 4a. Watchdog Timing Diagram, WDS = GNDFigure 3. Adding an External Manual Reset Function to the MAX6748–MAX6751Watchdog TimerMAX6746–MAX6751The watchdog ’s circuit monitors the µP ’s activity. It the µP does not toggle the watchdog input (WDI) within t WD (user-selected), RESET asserts for the reset time-out period. The internal watchdog timer is cleared by any event that asserts RESET , by a falling transition at WDI (which can detect pulses as short as 300ns) or by a transition at WDS. The watchdog timer remains cleared while reset is asserted; as soon as reset is released, the timer starts counting.The MAX6746–MAX6751 feature two modes of watch-dog operation: normal mode and extended mode. In nor-mal mode (Figure 4a), the watchdog timeout period is determined by the value of the capacitor connected between SWT and ground. In extended mode (Figure 4b), the watchdog timeout period is multiplied by 128.For example, in extended mode, a 0.1µF capacitor gives a watchdog timeout period of 65s (see the Extended-Mode Watchdog Timeout Period vs. C SWT graph in the Typical Operating Characteristics ). To disable the watch-dog timer function, connect SWT to ground.MAX6752/MAX6753The MAX6752 and MAX6753 have a windowed watch-dog timer that asserts RESET for the adjusted reset timeout period when the watchdog recognizes a fast watchdog fault (t WDI < t WD1), or a slow watchdog fault (period > t WD2). The reset timeout period is adjusted independently of the watchdog timeout period.The slow watchdog period, t WD2is calculated as follows:t WD2= 0.65 x 109 x C SWTwith t WD2 in seconds and C SWT in Farads.The fast watchdog period, t WD1, is selectable as a ratio from the slow watchdog fault period (t WD2). Select the fast watchdog period by pinstrapping SET0 and SET1,CC trates the SET0 and SET1 configuration for the 8, 16,and 64 window ratio ( t WD2/t WD1).For example, if C SWT is 1500pF, and SET0 and SET1 are low, then t WD2is 975ms (typ) and t WD1is 122ms (typ).RESET asserts if the watchdog input has two falling edges too close to each other (faster than t WD1) (Figure 5a) or falling edges that are too far apart (slower than t WD2) (Figure 5b). Normal watchdog operation is dis-played in (Figure 5c). The internal watchdog timer is cleared when a WDI falling edge is detected within the valid watchdog window or when RESET is deasserted.All WDI inputs are ignored while RESET is asserted.The watchdog timer begins to count after RESET is deasserted. The watchdog timer clears and begins to count after a valid WDI falling logic input. WDI falling transitions within periods shorter than t WD1or longer than t WD2force RESET to assert low for the reset time-out period. WDI falling transitions within the t WD1and t WD2 window do not assert RESET . WDI transitions between t WD1(min) and t WD1(max) or t WD2(min) and t WD2(max) are not guaranteed to assert or deassert the RESET . To guarantee that the window watchdog does not assert the RESET , strobe WDI between t WD1(max)and t WD2(min). The watchdog timer is cleared when RESET is asserted or after a falling transition on WDI or after a state change on SET0 or SET1. Disable the watchdog timer by connecting SET0 high and SET1 low.MAX6746–MAX6753µP Reset Circuits with Capacitor-AdjustableReset/Watchdog Timeout Delay_______________________________________________________________________________________9Figure 4b. Watchdog Timing Diagram, WDS = V CCM A X 6746–M A X 6753Applications InformationSelecting Reset/WatchdogTimeout CapacitorThe reset timeout period is adjustable to accommodate a variety of µP applications. Adjust the reset timeout period (t RP ) by connecting a capacitor (C SRT ) between SRT and ground. Calculate the reset timeout capacitor as folllows:C SRT = t RP / (5.06 x 106),with t RP in seconds and C SRT in Farads.The watchdog timeout period is adjustable to accom-modate a variety of µP applications. With this feature,the watchdog timeout can be optimized for software execution. The programmer can determine how often the watchdog timer should be serviced. Adjust the watchdog timeout period (t WD ) by connecting a specif-ic value capacitor (C SWT ) between SWT and GND. Fornormal mode operation, calculate the watchdog time-out capacitor as follows:C SWT = t WD /(5.06 x 106),with t RP in seconds and C SRT in Farads.F or the MAX6752 and MAX6753 windowed watchdog function, calculate the slow watchdog period, t WD2as follows:t WD2= 0.65 x 109x C SWTC SRT and C SWT must be a low-leakage (<10nA) type capacitor. Ceramic capacitors are recommended.Transient ImmunityIn addition to issuing a reset to the µP during power-up,power-down, and brownout conditions, these supervi-sors are relatively immune to short-duration supply tran-sients (glitches). The Maximum Transient Duration vs.Reset Threshold Overdrive graph in the Typical Operating Characteristics shows this relationship.The area below the curves of the graph is the region in which these devices typically do not generate a reset pulse. This graph was generated using a falling pulse applied to V CC , starting above the actual reset threshold (V TH ) and ending below it by the magnitude indicated (reset-threshold overdrive). As the magnitude of the tran-sient increases (farther below the reset threshold), the maximum allowable pulse width decreases. Typically, a V CC transient that goes 100mV below the reset threshold and lasts 50µs or less does not cause a reset pulse to be issued.µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay 10______________________________________________________________________________________Figure 5. MAX6752/MAX6753 Window Watchdog DiagramInterfacing to Other Voltages forLogic Compatibility The open-drain RESET output can be used to interface to a µP with other logic levels. As shown in Figure6, the open-drain output can be connected to voltages from 0 to 6V.Generally, the pullup resistor connected to the RESET connects to the supply voltage that is being monitored at the IC’s V CC pin. However, some systems can use the open-drain output to level-shift from the monitored supply to reset circuitry powered by some other supply. Keep in mind that as the supervisor’s V CC decreases towards 1V, so does the IC’s ability to sink current at RESET. Also, with any pullup resistor, RESET is pulled high as V CC decays toward zero. The voltage where this occurs depends on the pullup resistor value and the voltage to which it is connected.Ensuring a Valid RESET Down to V CC= 0V(Push-Pull RESET)When V CC falls below 1V, RESET current sinking capabil-ities decline drastically. The high-impedance CMOS-logic inputs connected to RESET can drift to undeter-mined voltages. This presents no problems in most applications, since most µPs and other circuitry do not operate with V CC below 1V.In those applications where RESET must be valid downto 0V, add a pulldown resistor between RESET andGND for the MAX6746/MAX6748/MAX6750/MAX6752push/pull outputs. The resistor sinks any stray leakage currents, holding RESET low (Figure7). The value of the pulldown resistor is not critical; 100kΩis large enoughnot to load RESET and small enough to pull RESET to ground. The external pulldown can not be used with the open-drain reset outputs.MAX6746–MAX6753µP Reset Circuits with Capacitor-AdjustableReset/Watchdog Timeout Delay ______________________________________________________________________________________11M A X 6746–M A X 6753µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay 12______________________________________________________________________________________Table 2. Reset Threshold Voltage Suffix (T A = -40°C to +125°C)piece minimum order increment for standard versions. Sample stock is typically held on standard versions only.Nonstandard versions require a minimum order increment of 10,000 pieces. Contact factory for availability.Table 3. Standard Version TableMAX6746–MAX6753µP Reset Circuits with Capacitor-AdjustableReset/Watchdog Timeout Delay______________________________________________________________________________________13Pin Configurations (continued)Typical Operating CircuitChip InformationTRANSISTOR COUNT: 1100PROCESS: BiCMOSM A X 6746–M A X 6753µP Reset Circuits with Capacitor-Adjustable Reset/Watchdog Timeout Delay 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.14____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600©2003 Maxim Integrated ProductsPrinted USAis a registered trademark of Maxim Integrated Products.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 .)。

FAN6754MRMY;FAN6754WAMLMY;FAN6754WAMRMY;FAN6754MLMY;中文规格书,Datasheet资料

Other protection functions include AC input brownout protection with hysteresis and VDD over-voltage protection. For over-temperature protection, an external NTC thermistor can be applied to sense the external switcher’ s temperature. When VDD OVP are activated, an internal latch circuit is used to latch-off the controller. The latch mode is reset when the VDD supply is removed.
FAN6754 is available in an 8-pin SOP package.
Ordering Information
Part Number
FAN6754MRMY FAN6754MLMY
Operating Temperature
Range
-40 to +105°C
Eco Status
Package
Supply Voltage. IC operating current and MOSFET driving current are supplied using this pin. This pin is connected to an external bulk capacitor of typically 47µF. The threshold voltage for turn-on and turn-off is 16.5V and 9V, respectively. The operating current is lower than 2mA.

绿色模式PWM控制器FAN6756

ＦＡＮ６７５６适用于要求极低待机功如图１所示。
图１ＦＡＮ６７５６典型应用电路
皿
世界电子元器件２０１３．１ｇｅｃｅｃｃｒ￣．ｃｏｍ
集成的绿色模式ＰＷＭ控制器，能够括飞兆半导体专有的检测电阻短路技术，包括飞兆半导体专有的深度间
显著减少开关电源（ＳＭＰＳ）设计的待保护（ＳｅｎｓｅＲｅｓｉｓｔｏｒＳｈｏｒｔ — Ｃｉｒｃｕｉｔ歇模式（ＤｅｅｐＢｕｒｓｔＭｏｄｅ）技术，可
ＦＡＮ６７５６使用了创新的ＡＸ．统损坏，从而提供了一个安全可靠的以降低控制器本身的功耗，也可降低ＣＡＰ放电方法，它可以省去Ｘ．ｃａｐ放解决方案。电电阻器，降低了ＥＭＩ滤波器的损外部电路和元件的功耗。其典型应用
机损耗，最高达３０ｍＷ，省去多达１５Ｐｒｏｔｅｃｔｉｏｎ，ＳＳＣＰ）功能，当检测电以减少无负载和轻负载条件下的开关
个外部输出以防止系损耗。采用ｍＷＳａｖｅｒ技术，不仅可
绿色模式ＰＷＭ控制器ＦＡＮ６７５６
■ 飞兆半导体公司
ＰＷＭ控制器ＦＡＮ６７５６采用耗，仍可保证当电源插头拔出ＡＣ插耗的电源，例如用于笔记本电脑、打

FAN100MY;中文规格书,Datasheet资料

Description
The primary-side PWM controller FAN100 significantly simplifies power supply design that requires CV and CC regulation capabilities. The FAN100 controls the output voltage and current precisely with the information in the primary side of the power supply, not only removing the output current sensing loss, but eliminating secondary feedback circuitry.
Ground.
Supply. The power supply pin. IC operating current and MOSFET driving current are supplied using this pin. This pin is connected to an external VDD capacitor of typically 10µF. The threshold voltages for startup and turn-off are 16V and 5V, respectively. The operating current is lower than 5mA.
Ground.
Constant Current Loop Compensation. this pin connects a capacitor and a resistor between COMI and GND for compensation current loop gain.

STR-W6753中文资料

Universal-Input/58 W Off-Line Quasi-Resonant Flyback Switching RegulatorData Sheet28103.31*STR-W6753Sanken Power Devices from Allegro MicroSystemsS w i t c h i n g Re g u l a t o r sABSOLUTE MAXIMUM RATINGSat T A = +25°CControl Supply Voltage, V CC . . . . 35 V Drain-Source Voltage, V DSS . . . . . . 650 V Drain Switching Current, I D . . . 11.2 A*Peak Drain Switching Current,I DM . . . . . . . . . . . . . . . . . . . . . 11.2 A Single-Pulse Avalanche Energy,E AS . . . . . . . . . . . . . . . . . . . 145 mJ OCP/BD Voltage Range,V OCP . . . . . . . . . . . . –1.5 V to +5 V FB Input Current, I FB . . . . . . . . 10 mA FB Voltage Range, V FP –0.5 V to +9 V Package Power Dissipation, P Dcontrol (V CC × I CC(ON)). . . . . . 0.8 W MOSFET (V DSS × I D ). . . See Graph MOSFET Channel Temp., T J . +150°C Internal Frame Temp., T F . . . . +115°C Operating Temperature Range,T A . . . . . . . . . . . -20°C to +115°C†Storage Temperature Range,T S . . . . . . . . . . . . -40°C to +125°C* Drain switching current is limited by tem-perature (page 2) and safe operating area (page 5).†For the availability of parts meeting -40°Crequirements, contact Allegro’s Sales Represen-tative.The STR-W6753 is a quasi-resonant regulator specifically designed to satisfy the requirements for increased integration and reliability in switch-mode power supplies. It incorporates a primary control and drive circuit with an avalanche-rated power MOSFET. The regulator exhibits only low-level high-frequency EMI noise because of soft switching of the MOSFET close to ground (bottom point). A bottom-skip function minimizes an increase of operational frequency during light loads to improve system efficiency over the entire load range.Covering the power range from below 120 watts for a 230 VAC input, or 58 watts for a universal input (85 to 264 VAC), this device can be used in a range of applications, from DVD and VCR players to ac adapters for cellular phones and digital cameras. An auto-standby function, which is internally triggered by sensing on time, reducespower consumption at light load. An externally triggered standby mode reduces the input power further. Multiple protections, including the avalanche-energy-guaranteed MOSFET, provide high reliability of system design. Devices with an increased output power rating are the STR-W6754 and STR-W6756.Cycle-by-cycle current limiting, undervoltage lockout with hyster-esis, and overvoltage protection protect the power supply during the normal overload and fault conditions. Overvoltage protection is latched after a short delay. The latch may be reset by cycling the input supply.Low start-up current and a low-power standby mode selected from the secondary circuit completes a comprehensive suite of features. The STR-W6753 is provided in a fully molded TO-220-style flange-mounted, high power, isolated plastic package.FEATURES AND BENEFITS■Rugged 650 V Avalanche-Rated MOSFET Simplified Surge Absorption No V DSS Derating Required ■ 1.7 Ω Maximum r DS(on)■Two Operational Modes by Automatic Switching:Quasi-Resonant Mode for Normal OperationBurst Mode for Standby Operation or Light Loads ■Automatic or Manually Triggered Burst Standby Input Power <0.1 W at No Load ■Low Operating Current (6 mA typ)— continued Always order by complete part number, e.g., STR-W6753 .STR-W6753Universal-Input/58 W Off-Line Quasi-Resonant Flyback Switching RegulatorS w i t c h i n g Re g u l a t o r s FUNCTIONAL BLOCK DIAGRAMFEATURES AND BENEFITS (cont’d)■Auto-Bias FunctionStable Burst Operation Without Generating Interference ■Internal Off-Timer Circuit■Built-In Constant-Voltage Drive ■Multiple Protections:Pulse-by-Pulse Overcurrent Protection Overload Protection with Auto Recovery Latching Overvoltage ProtectionUndervoltage Lockout with Hysteresis ■RoHS CompliantSTR-W6753Universal-Input/58 W Off-Line Quasi-Resonant Flyback Switching Regulator3S w i t c h i n g Re g u l a t o r s ELECTRICAL CHARACTERISTICS at T A = +25°C, V CC = 20 V, voltage measurements are referenced to S/GND terminal (unless otherwise specified).LimitsCharacteristic SymbolTest ConditionsMin.Typ.Max.UnitsStart-Up Operation Operation Start VoltageV CC(ON)Turn-on, V CC = 0 19.9 V16.318.219.9V Soft-Start Operation Stop Voltage V SS/OLP 1.1 1.2 1.4V Soft-Start Oper. Charging Current I SS/OLP -390-550-710µA Operation Stop Voltage V CC(OFF)Turn-off, V CC = 19.9 8.8 V 8.89.710.6V Circuit Current in Non-Operation I CC(OFF)V CC = 15 V––100µANormal OperationDrain-Source Breakdown Voltage V (BR)DSS I D = 300 µA 650––V Drain Leakage Current I DSSV DS = 650 V––300µA On-State Resistance r DS(on)I D = 1.4 A, T J = +25°C–– 1.7ΩSwitching Time t f ––400ns Circuit Current I CC(ON)–– 6.0mA Oscillation Frequencyf osc 192225kHz Bottom-Skip Oper. Threshold Volt.V OCPBD(BS1)-605-665-720mV V OCPBD(BS2)-385-435-485mV Quasi-Resonant Oper. Threshold V OCPBD(TH1)280400520mV V OCPBD(TH2)670800930mV Feedback-Pin Threshold Voltage V FB(OFF) 1.32 1.45 1.58V Feedback-Pin Current I FB(ON)60010001400µAStandby OperationStandby Operation Start Voltage V CC(S)V CC = 0 12.2 V 10.311.112.1V Standby Oper. Start Volt. Interval V CC 1.101.35 1.65V Standby Non-Operation Current I CC(S)V CC = 10.2 V –2056µA Feedback-Pin CurrentI FB(ON)V CC = 10.2 V – 4.014µA Feedback-Pin Threshold Voltage V FB(S)V CC = 12.2 V0.55 1.10 1.50V Minimum ON Timet on(min)0.50.81.2µscontinued next page ...STR-W6753Universal-Input/58 W Off-Line Quasi-Resonant Flyback Switching RegulatorS w i t c h i n g Re g u l a t o r s Protection Operation OVP Operation Voltage V CC(OVP)Turn-off, V CC = 0 29.9 V 25.527.729.9V Maximum ON Time t on(max)27.532.539.0µs OLP Operation Voltage V SSOLP 4.0 4.9 5.8V OLP Operation CurrentI SSOLP -6.0-11-16µA Overcurrent Detect. Threshold Volt.V OCPBD(LIM)-0.895-0.940-0.995V OCP/BD-Pin Current I OCPBD -40-100-250µA Latch Holding Current I CC(H)V CC = 29.9 V CC(OFF) – 0.3 V –45140mA Latch Release Voltage V CC(L)V CC = 29.9 6 V6.07.28.5VOtherThermal ResistanceR θJFOutput junction-to-frame –– 2.0°C/WNOTES: 1. Typical Data is for design information only.2. Negative current is defined as coming out of (sourcing) the specified device termninal.ELECTRICAL CHARACTERISTICS at T A = +25°C, V CC = 20 V, voltage measurements are referenced to S/GND terminal (unless otherwise specified).LimitsCharacteristic Symbol Test Conditions Min.Typ.Max.UnitsSTR-W6753Universal-Input/58 W Off-Line Quasi-Resonant Flyback Switching Regulator5S w i t c h i n g Re g u l a t o rs Avalanche energy is measured at V DD = 99 V,L = 20 mH, I L = 3.6 A.MOSFET TYPICAL CHARACTERISTICSSTR-W6753Universal-Input/58 W Off-Line Quasi-Resonant Flyback Switching RegulatorS w i t c h i n g Re g u l a t o r s MOSFET TYPICAL CHARACTERISTICS (cont’d)WARNING — These devices are designed to be operated at lethal voltages and energy levels. Circuit designsthat embody these components must conform with applicable safety requirements. Precautions must be taken to prevent accidental contact with power-line potentials. Do not connect grounded test equipment.The use of an isolation transformer is recommended during circuit development and breadboarding.STR-W6753Universal-Input/58 W Off-Line Quasi-Resonant Flyback Switching Regulator7S w i t c h i n g Re g u l a t o r s Complete product description and applications information is provided in Application Note 28103.30, Series STR-W6750 Off-Line Quasi-Resonant Flyback Switching Regulators .Typical ApplicationAPPLICATIONS INFORMATIONThe products described herein are manufactured in Japan by Sanken Electric Co., Ltd. for sale by Allegro MicroSystems, Inc.Sanken and Allegro reserve the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Therefore, the user is cautioned to verify that the information in this publication is current before placing any order.When using the products described herein, the applicability andsuitability of such products for the intended purpose shall be reviewed at the users responsibility.Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and defect of semiconductor products at a certain rate is inevitable.Users of Sanken products are requested to take, at their own risk,preventative measures including safety design of the equipment or systems against any possible injury, death, fires or damages to society due to device failure or malfunction.Sanken products listed in this publication are designed and intended for use as components in general-purpose electronic equipment or apparatus (home appliances, office equipment, telecommunication equipment, measuring equipment, etc.). Their use in any application requiring radiation hardness assurance (e.g., aerospace equipment) is not supported.When considering the use of Sanken products in applications where higher reliability is required (transportation equipment and its control systems or equipment, fire- or burglar-alarm systems, various safety devices, etc.), contact a company sales representative to discuss and obtain written confirmation of your specifications.The use of Sanken products without the written consent of Sanken in applications where extremely high reliability is required (aerospace equipment, nuclear power-control stations, life-support systems, etc.) is strictly prohibited.The information included herein is believed to be accurate andreliable. Application and operation examples described in this publica-tion are given for reference only and Sanken and Allegro assume no responsibility for any infringement of industrial property rights,intellectual property rights, or any other rights of Sanken or Allegro orany third party that may result from its use.EI16EISTR-W6753Universal-Input/58 W Off-Line Quasi-Resonant Flyback Switching RegulatorS w i t c h i n g Re g u l a t o r s PACKAGE DIMENSIONSin MillimetersProduct weight: approx. 2.3 g.Recommended mounting hardware torque: 0.588 ~ 0.785 Nm, 6 ~ 8 kgf × cm.Recommended silicon grease: Dow Corning SC102, Toshiba YG6260, Shin-Etsu G746, or equivalent.。

FAN6755WMY;FAN6755UWMY;中文规格书,Datasheet资料

Package
PWM Frequency
65kHz 130kHz
Packing Method
Reel & Tape Reel & Tape
-40 to +105°C 7-Lead, Small Outline Integrated Circuit (SOIC), Depopulated JEDEC MS-112, .150 -40 to +105°C Inch Body
Description
This highly integrated PWM controller provides several features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary adaptive green-mode function reduces switching frequency at light-load condition. To avoid acousticnoise problems, the minimum PWM frequency is set above 23kHz. This green-mode function enables the power supply to meet international power conservation requirements, such as Energy Star®. With the internal high-voltage startup circuitry, the power loss caused by bleeding resistors is also eliminated. To further reduce power consumption, FAN6755W/UW uses the BiCMOS process, which allows an operating current of only 2mA. The standby power consumption can be under 100mW for most of LCD monitor power supply designs. FAN6755W/UW integrates a frequency-hopping function that reduces EMI emission of a power supply with minimum line filters. Its built-in synchronized slope compensation achieves a stable peak-current-mode control and improves noise immunity. The proprietary, external line compensation ensures constant output power limit over a wide AC input voltage range from 90VAC to 264VAC. FAN6755W/UW provides many protection functions. The internal feedback open-loop protection circuit protects the power supply from open feedback loop condition or output short condition. It also has line under-voltage protection (brownout protection) and overvoltage protection using an input voltage sensing pin (VIN). FAN6755W/UW is available in a 7-pin SOP package.

intersil ISL6753中文规格书

R18 10 5% 2512
5
3
+
+
C1-C4 33uF 450V
R14 4.99 0805
CR3 SS12
8
CR4 SS12
R15 4.99 0805
T1
15, 16
2
Ns
1
2, 3
1,C
+
300 - 400 VDC
+
R1 4.7k 5% 2512
7,8 1
C13 0.1uF
7,8 1
Q9 ZXTDB2M832
ISL6753 内部电路结构
2
ISL6753
典型应用电路 – 高压输入原边控制 ZVS 全桥转换器
P1 VIN+
Q1 FQB6N50
T3 P0544
Q2 FQB6N50
4
6
Q5 BSS138LT 1
3
R13 10.0k
1 2
Q6 BSS138LT 1
3 1 2
R16 10.0k
C17 100pF 250V COG
o
运行条件
Supply Voltage Range (Typical)------------------9V-16VDC Temperature Range o o ISL6753AAxx------------------------------ -40 C to 105 C
CAUTION: Stress above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Notes:

6755中文资料

Product Data SheetZ5 Series P/N s 6755 & 6756Features12.800 MHz output frequencyLow Current Draw Consumption: <20 mA Aging to <4.0 ppm for 20 years Package: 1.0 x 1.15 x 0.395 (25.40x29.21x10.03mm)LS TTL output+3.3 Vdc (operable over +3.135 Vdc to +5.5 Vdc)For use with Semtech Chip ACS8510 SETS SONET/SDH Network Timing Sources Computer Telephony CT-BUSThe 6755 & 6756 have been optimized to work with the Semtech Chip ACS8510 SETS to meet the requirements of Bell Core specification GR-1244-CORE and ITU G.813.Both units have been designed to meet theFrequency vs Supply requirement of ±0.05 ppm over any ±5% change in Supply from a minimum of +3.135 Vdc to a maximum of +5.5 Vdc.Note: Other Stability and Output Options are available.A data sheet explaining all the Z5 series options can be downloaded from the TCXO section of our website at:Temperature Compensated Crystal Oscillators(0.4)60 to 90 sec.at 150ºC to 170ºC20 to 40 sec. at > 200ºCNote: TCXO s are precision subsystems with tolerances measured to ±0.01 ppm. Non-Hermetically sealedTCXO s should not be subjected to a wash process that will immerse the TCXO in solvents. NO CLEAN is the recommended procedure. The Z5 series of TCXO s has been designed for pick and place reflow soldering. The suggested reflow profile is shown above. The TCXOmaybe reflowed two times. Typical frequency shift as a result of reflow is <1.0 ppm per reflow. VI recommends waiting at least two hours after reflow before measuring the unit.6755 (±0.28 ppm 0ºC to +70ºC)6756 (±0.28 ppm -5ºC to +50ºC)。

FAN6754：PWM控制器

Ｆ６５：ＷＭ控制器ＡＮ７４Ｐ
电源管理
ＡＳ１３：０ｍＡ／７２Ｏ３ＤＣＤＣ升压转换器
了旗下ＤＣＤ／Ｃ产品线。ＡＳ３１７的拓扑结构在功能创新方３面又前进了一步，实
现了降压．升压功能。
ＡＳ３７可在升压和１３
ＦＮ７４可为设计人员Ａ６５
提供高启动电压，将轻负载下的能效提高２％。新器件５
还并入了过压、过流与过热保护功能，以及电压过低和线路补偿功能，可以省去外部保护电路。ＦＮ６５Ａ７４的其它优势包括能够降低Ｅ达５Ｂ１ｄＭＩｄ－Ｂ的抖频功能，以及内部０软启动（）８ｍｓ功能以减小ＭＯＳＦＴＥ在启动时的电压应力。Ｆ６５ＡＮ７４加入了多项设计功能，能够降低笔记本电脑
Ａ／ＣＤＣ电源转换器设计，拥有最小导通时间（Ｔ保护ＭＯ）电路，适用于笔记本型电脑、ＬＣＤ和ＰＰ电视、游戏机Ｄ
ＡＰ３Ｘ／７３：压降稳压器７１ＡＰ３ｘ低
Ｄｏｅ推出专为驱动低等效串联电阻（Ｓ）ｐＣｉｓｄＥＲＩＦＭＬＣ
Ａｕｓｒａｍｉｒｙｓｅｍｓｔｉｃｏｓｔｗｗｗ．ｓｔｉｍｉｏｙｓｔｍｓｃｏｒａｕｒａｃｒｓｅ．ｎ
ｌ７１６
ｌ推出Ｉ１７ＡＳｒｅｔｉｒＣ新器件为节能ＲＲ２ｍａｔｃｉｅ。１６ＲｆＩ
飞兆半导体推出一系列脉宽调制（ＷＭ）Ｐ控制器，新产品可让笔记本电脑电源的设计人员满足严苛的国际节能规范要求，包括强制要求工作模式下最低平均效率达到

BD6753KV中文资料

Japan / (Internal Sales)
Tokyo Yokohama Nagoya Kyoto 2-1-1, Yaesu, Chuo-ku, Tokyo 104-0082 TEL : +81(3)5203-0321 FAX : +81(3)5203-0300 2-4-8, Shin Yokohama, Kohoku-ku, Yokohama, Kanagawa 222-8575 TEL : +81(45)476-2131 FAX : +81(45)476-2128 Dainagayo Building 9F 3-28-12, Meieki, Nakamura-ku, Nagoya,Aichi 450-0002 TEL : +81(52)581-8521 FAX : +81(52)561-2173 579-32 Higashi Shiokouji-cho, Karasuma Nishi-iru, Shiokoujidori, Shimogyo-ku, Kyoto 600-8216 TEL : +81(75)311-2121 FAX : +81(75)314-6559 TEL : +81(45)476-9270 FAX : +81(045)476-9271
Please contact our sales offices for details ;
U.S.A / San Diego Atlanta Dallas Germany / Dusseldorf TEL : +1(858)625-3630 TEL : +1(770)754-5972 TEL : +1(972)312-8818 TEL : +49(2154)9210 FAX : +1(858)625-3670 FAX : +1(770)754-0691 FAX : +1(972)312-0330 FAX : +49(2154)921400 FAX : +44(1)908-282-528

FAN6755引脚功能和应用电路图纸参数电压值

FAN6755引脚功能和应用电路图纸参数电压值功能简介：FAN6755 是一个高度集成的PWM 控制器特色绿色模式、跳频、恒功率的限制，和保护功能的数量。

绿色模式和爆裂模式功能与低操作电流，以便最大限度地所以电源供应可以满足严格的负载轻效率备用电源的条例。

频率跳变减少了电磁发射（EMI）的传播频谱。

恒功率限制功能最小化的组件应力的异常情况和帮助优化权力舞台。

如保护功能打火，重载实现开环(OLP) 过电压和完全集成(OTP) 温度过高、哪些提高了开关模式电源的可靠性(开关电源) 而又不增加系统成本。

此应用程序说明解释如何更换PWM 控制器FAN6753与FAN6755。

只有VIN 和闩锁的针脚是不同的;然而，一些功能的改进已向更高效率、低功耗、的FAN6755和更好的性能。

因此，几个外部组件应该相应地改变。

允许小于100mW 待机状态功耗为大部分的液晶显示器电源供应设计mWSaver? 技术提供业内同级最佳的待机功耗。

内部高压JFET启动低工作电流最大值：2mA轻载条件下PWM频率可自适应降低至23KHz，提高了轻载效率最低负载或无负载期间的反馈阻抗开关专有异步抖频功能降低EMI固定PWM频率：65KHz (FAN6755W)、130KHz (FAN6755UW)内部前沿消隐内置同步斜率补偿自动重启保护：反馈开环保护(OLP)、VDD过压保护(OVP)、过温保护(OTP)和线路过压保护带有箝位输出电压的软门驱动：18VVDD欠压闭锁(UVLO)可编程恒定功率限制（全AC输入范围）带有滞后功能的内部OTP传感器内置5ms软启动功能通过输入电压感测（VIN引脚）实现带滞后功能的通电/欠压保护和线路过压保护。

ISL6753_06中文资料

3 5,6 Q4 FQB6N50 7,8 1
3 5,6
7,8 1 C12 1.0uF 3 Q8 ZXTDB2M832 R17 10.0 C16 100pF 250V COG C23 4700pF 250VAC SAFETY R19 10 2512
2 4
2 4
Q3 FQB6N50
3 5,6
C22 4700pF 250VAC SAFETY
Absolute Maximum Ratings
Supply Voltage, VDD . . . . . . . . . . . . . . . . . . . GND - 0.3V to +20.0V OUTxxx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VDD Signal Pins . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VREF + 0.3V VREF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 6.0V Peak GATE Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1A ESD Classification Human Body Model (Per MIL-STD-883 Method 3015.7) . . .3000V Charged Device Model (Per EOS/ESD DS5.3, 4/14/93) . . .1000V

FAN6755引脚功能和应用电路图纸参数电压值

FAN6755引脚功能和应用电路图纸参数电压值功能简介：FAN6755 是一个高度集成的PWM 控制器特色绿色模式、跳频、恒功率的限制，和保护功能的数量。

绿色模式和爆裂模式功能与低操作电流，以便最大限度地所以电源供应可以满足严格的负载轻效率备用电源的条例。

频率跳变减少了电磁发射（EMI）的传播频谱。

恒功率限制功能最小化的组件应力的异常情况和帮助优化权力舞台。

如保护功能打火，重载实现开环(OLP) 过电压和完全集成(OTP) 温度过高、哪些提高了开关模式电源的可靠性(开关电源) 而又不增加系统成本。

此应用程序说明解释如何更换PWM 控制器FAN6753与FAN6755。

只有VIN 和闩锁的针脚是不同的;然而，一些功能的改进已向更高效率、低功耗、的FAN6755和更好的性能。

因此，几个外部组件应该相应地改变。

允许小于100mW 待机状态功耗为大部分的液晶显示器电源供应设计mWSaver? 技术提供业内同级最佳的待机功耗。

675轴承尺寸参数

675轴承尺寸参数
摘要：
1.675 轴承的概述
2.675 轴承的尺寸参数
3.675 轴承的应用领域
正文：
【675 轴承的概述】
675 轴承是一种深沟球轴承，广泛应用于各种机械设备中。

这种轴承以其良好的承载能力和高速性能而著名，可以满足大多数工业应用的需求。

【675 轴承的尺寸参数】
675 轴承的尺寸参数主要包括内径、外径、宽度和装配高度。

其中，内径为675mm，外径为960mm，宽度为75mm，装配高度为66mm。

这些尺寸参数决定了675 轴承可以承受的径向和轴向负荷，以及其安装空间。

【675 轴承的应用领域】
675 轴承可以应用于各种工业设备中，包括但不限于：电机、减速器、机床、矿山设备、起重设备等。