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LM79M05CH资料

LM79Microprocessor System Hardware MonitorGeneral DescriptionThe LM79is a highly integrated Data Acquisition system for hardware monitoring of servers,Personal Computers,or virtually any microprocessor based system.In a PC,the LM79can be used to monitor power supply voltages,tem-peratures,and fan speeds.Actual values for these inputs can be read at any time,and programmable WATCHDOG limits in the LM79activate a fully programmable and maskable interrupt system with two outputs.The LM79has an on-chip temperature sensor,5positive analog inputs,two inverting inputs (for monitoring negative voltages),and an 8-bit ADC.An input is provided for the overtemperature outputs of additional temperature sensors and this is linked to the interrupt system.The LM79provides inputs for three fan tachometer outputs.Additional inputs are provided for Chassis Intrusion detection circuits,5VID moni-tor inputs,and chainable interrupt.The LM79provides both ISA and Serial Bus interfaces.A 32-byte auto-increment RAM is provided for POST (Power On Self Test)code stor-age.Compared to the LM78,the LM79has the following differ-ences:•an additional VID input pin•an additional register for device identification •open drain Power Switch Bypass OutputFeaturesn Temperature sensing n 5positive voltage inputsn 2op amps for negative voltage monitoring n 3fan speed monitoring inputsn Input for additional temperature sensors n Chassis Intrusion Detector inputn WATCHDOG comparison of all monitored values n POST code storage RAMnISA and I 2C ™Serial Bus interfacesKey Specificationsj Voltage monitoringaccuracy±1%(max)j Temperature Accuracy−10˚C to +100˚C±3˚C (max)j Supply Voltage 5Vj Supply Current Operating:1mA typ Shutdown:10µA typj ADC Resolution8BitsApplicationsn System Hardware Monitoring for Servers and PCs n Office Electronicsn Electronic Test Equipment and InstrumentationOrdering InformationTemperature Range Package−10˚C ≤T A ≤+100˚COrder Number Device Marking LM79CCVFLM79CCVFVGZ44A #Indicates Active Low (“Not”)Connection DiagramI 2C ®is a registered trademark of the Phillips Corporation.DS100036-2February 2000LM79Microprocessor System Hardware Monitor©2001National Semiconductor Corporation Typical ApplicationDS100036-1L M 79 2Block Diagram Pin DescriptionPin Name(s)PinNumberNumberof PinsType DescriptionIORD11Digital Input An active low standard ISA bus I/O Read Control.IOWR21Digital Input An active low standard ISA bus I/O Write Control.SYSCLK31Digital Input The reference clock for the ISA bus.Typically ranges from4.167MHz to8.33MHz.The minimum clock frequency this input can handle is1Hz. D7–D04–118Digital I/O Bi-directional ISA bus Data lines.D0corresponds to the low order bit,with D7the high order bit.V CC(+5V)121POWER+5V V CC power.Bypass with the parallel combination of10µF(electolytic or tantalum)and0.1µF(ceramic)bypass capacitors.GNDD131GROUND Internally connected to all digital circuitry.SMI__IN141Digital Input Chainable SMI(System Management Interrupt)Input.This is an activelow input that propagates the SMI signal to the SMI output of the LM79via SMI Mask Register Bit6and SMI enable Bit1of the ConfigurationRegister.Chassis Intrusion 151Digital I/O An active high input from an external circuit which latches a ChassisIntrusion event.This line can go high without any clamping actionregardless of the powered state of the LM79.The LM79provides aninternal open drain on this line,controlled by Bit7of NMI Mask Register2,to provide a minimum20ms reset of this line.DS100036-3LM793Pin Description(Continued)Pin Name(s)Pin Number Number of PinsType DescriptionPower Switch Bypass 161Digital OutputAn active low open drain output intended to drive an external P-channel power MOSFET for software power control.FAN3–FAN117–193Digital Input 0V to +5V amplitude fan tachometer input.SCL 201Digital Input Serial Bus Clock.SDA 211Digital I/O Serial Bus bidirectional Data.RESET221Digital OutputMaster Reset,5mA driver (open drain),active low output with a 20ms minimum pulse width.Available when enabeld via Bit 7in SMI Mask Register 2.VID4/NTEST 231Digital Input/Test Output By default an input for the VID4power supply readout for the system processor (Pentium/PRO).Can be programmed as a NAND Treetotem-pole output that provides board-level connectivity testing.Refer to Section 11.0on NAND Tree testing.GNDA 241GROUND Internally connected to all analog circuitry.The ground reference for all analog inputs.−IN6251Analog Input Ground-referred inverting op amp input.Refer to Section 4.0,“ANALOG INPUTS”.FB6261Analog Output Output of inverting op amp for Input 6.Refer to Section 4.0,“ANALOG INPUTS”.FB5271Analog Output Output of inverting op amp for Input 5.Refer to Section 4.0,“ANALOG INPUTS”.−IN5281Analog Input Ground-referred inverting op amp input.Refer to Section 4.0,“ANALOG INPUTS”.IN4–IN029–335Analog Input 0V to 4.096V FSR Analog Inputs.VID3–VID034–374Digital Input Inputs for the power supply readouts for system microprocessor (Pentium/PRO).This value is read in the VID/Fan Divisor Register.BTI 381Digital Input Board Temperature Interrupt driven by O.S.outputs of additionaltemperature sensors such as LM75.Provides internal pull-up of 10k Ω.NMI/IRQ391Digital OutputNon-Maskable Interrupt (open source)/Interrupt Request (open drain).The mode is selected with Bit 5of the Configuration Register and the output is enabled when Bit 2of the Configuration Register is set to 1.The default state is disabled and IRQ mode.SMI 401Digital OutputSystem Management Interrupt (open drain).This output is enabled when Bit 1in the Configuration Register is set to 1.The default state is disabled.A2–A041–433Digital Input The three lowest order bits of the 16-bit ISA Address Bus.A0corresponds to the lowest order bit.CS441Digital InputChip Select input from an external decoder which decodes high order address bits on the ISA Address Bus.This is an active low input.TOTAL PINS44L M 79 4Absolute Maximum Ratings(Notes1,2) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.Positive Supply Voltage(V CC) 6.5V Voltage on Any Input or Output Pin−0.3V to(V CC+0.3V) Ground Difference(GNDD–GNDA)±300mV Input Current at any Pin(Note3)±5mA Package Input Current(Note3)±20mA Maximum Junction Temperature(T J max)150˚C ESD Susceptibility(Note5)Human Body Model2000V Machine Model175V Soldering InformationPQFP Package(Note6):Vapor Phase(60seconds)215˚C Infrared(15seconds)220˚C Storage Temperature−65˚C to+150˚COperating Ratings(Notes1,2)Operating Temperature Range T MIN≤T A≤T MAX LM79−55˚C≤T A≤+125˚C Specified Temperature Range T MIN≤T A≤T MAX LM79−10˚C≤T A≤+100˚C Junction to Ambient Thermal Resistance(θJA(Note4))NS Package ID:VGZ44A62˚C/W Supply Voltage(V CC)+4.25V to+5.75V Ground Difference(IGNDD–GNDAI)≤100mV V IN Voltage Range−0.05V to V CC+0.05VDC Electrical CharacteristicsThe following specifications apply for+4.25V DC≤V CC≤+5.75V DC,f SYSCLK=8.33MHz,R S=25Ω,unless otherwise speci-fied.Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.(Note7)Symbol Parameter Conditions Typical Limits Units(Note8)(Note9)(Limits) POWER SUPPLY CHARACTERISTICSI CC Supply Current Interface Inactive 1.02mA(max)Shutdown Mode10µA TEMPERATURE-TO-DIGITAL CONVERTER CHARACTERISTICSAccuracy−10˚C≤T A≤+100˚C±3˚C(max)Resolution1˚C(min) ANALOG-TO-DIGITAL CONVERTER CHARACTERISTICSResolution(8bits with full-scale at4.096V)16mVTUE Total Unadjusted Error(Note10)±1%(max)DNL Differential Non-Linearity±1LSB(max)PSS Power Supply Sensitivity±1%/Vt C Total Monitoring Cycle Time(Note11) 1.0 1.5sec(max)OP AMP CHARACTERISTICSOutput Current(Sourcing)50µAInput Offset Voltage I OUT=50µA±1mVInput Bias Current±0.1nAPSRR60dBDC Open Loop Gain70dBGain Bandwidth Product500kHz MULTIPLEXER/ADC INPUT CHARACTERISTICSOn Resistance4002000Ω(max)Off Channel Leakage Current±0.1nAInput Current(On Channel Leakage Current)±0.1nAFAN RPM-TO-DIGITAL CONVERTERAccuracy+25˚C≤T A≤+75˚C±10%(max)−10˚C≤T A≤+100˚C±15%(max) Full-scale Count255(max)LM795DC Electrical Characteristics(Continued)The following specifications apply for +4.25V DC ≤V CC ≤+5.75V DC ,f SYSCLK =8.33MHz,R S =25Ω,unless otherwise speci-fied.Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.(Note 7)SymbolParameterConditionsTypical Limits Units (Note 8)(Note 9)(Limits)FAN RPM-TO-DIGITAL CONVERTERFAN1and FAN2Nominal Input RPM (See Section 6.0)Divisor =1,Fan Count =153(Note 12)8800RPM Divisor =2,Fan Count =153(Note 12)4400RPM Divisor =3,Fan Count =153(Note 12)2200RPM Divisor =4,Fan Count =153(Note 12)1100RPM FAN3Design Nominal Input RPM Fan Count =153(Note 12)4400RPM Internal Clock Frequency+25˚C ≤T A ≤+75˚C 22.520.2kHz (min)24.8kHz (max)−10˚C ≤T A ≤+100˚C22.519.1kHz (min)25.9kHz (max)DIGITAL OUTPUTS (VID4/NTEST,NMI/IRQ)V OUT(1)Logical “1”Output Voltage I OUT =±5.0mA 2.4V (min)V OUT(0)Logical “0”Output Voltage I OUT =±5.0mA 0.4V (max)ISA D0–D7DIGITAL OUTPUTSV OUT(1)Logical “1”Output Voltage I OUT =±12.0mA 2.4V (min)V OUT(0)Logical “0”Output Voltage I OUT =±12.0mA 0.4V (max)I OUTTRI-STATE ®Output CurrentV OUT =0V DC 0.0051µA (max)V OUT =V CC−0.005−1µA (min)OPEN DRAIN DIGITAL OUTPUTS (Power Switch Bypass,SDA,RESET,SMI,Chassis Intrusion)V OUT(0)Logical “0”Output Voltage I OUT =−5.0mA 0.4V (min)I OHHigh Level Output Current V OUT =V CC0.1100µA (max)RESET and Chassis Intrusion 4520ms (min)Pulse WidthDIGITAL INPUTS:SMI__IN,VID0–VID3,VID4/NTEST,BTI,CS,A0,A1,A2,Mode Control and Interface Inputs (IORD,IOWR,SYSCLK),Data Lines (D0–D7),Chassis Intrusion,and Tach Pulse Logic Inputs (FAN1,FAN2,FAN3)V IN(1)Logical “1”Input Voltage 2.0V (min)V IN(0)Logical “0”Input Voltage 0.8V (max)SERIAL BUS DIGITAL INPUTS (SCL,SDA)V IN(1)Logical “1”Input Voltage 0.7x V CC V (min)V IN(0)Logical “0”Input Voltage 0.3x V CCV (max)ALL DIGITAL INPUTS EXCEPT FOR BTII IN(1)Logical “1”Input Current V IN =V CC −0.005−1µA (min)I IN(0)Logical “0”Input Current V IN =0V DC0.0051µA (max)C IN Digital Input Capacitance 20pF BIT DIGITAL INPUTI IN(1)Logical “1”Input Current V IN =V CC 110µA (max)I IN(0)Logical “0”Input Current V IN =0V DC −500−2000µA (max)C INDigital Input Capacitance20pFL M 79 6LM79AC Electrical Characteristics(Note13)The following specifications apply for+4.25V≤V CC≤DC +5.75V DC unless otherwise specified.Boldface limits apply for T A=T J=T MIN to T MAX;all other limits T A=T J=25˚C.Symbol Parameter Conditions Typical Limits Units(Note8)(Note9)(Limits)ISA TIMING CHARACTERISTICSf SYSCLK System Clock(SYSCLK)Input Frequency8.33MHzt CS(setup)CS Active to IORD/IOWR Active10ns(min)t CS(hold)IORD/IOWR Inactive to CS Inactive10ns(min)t SA(setup)Address Valid to IORD/IOWR Active30ns(min)t SA(hold)IORD/IOWR Inactive to Address Invalid10ns(min)ISA WRITE TIMINGt SDWR(setup)Data Valid to IOWR Active5ns(min)t SDWR(hold)IOWR Inactive to Data Invalid5ns(min)t WR(setup)IOWR Active to Rising Edge of SYSCLK20ns(min) ArrayDS100036-4The delay between consecutive IORD and IOWR pulses should be greater than50ns to ensure that a Power-on reset does notoccur unintentionally.(See Section3.2‘Resets’)FIGURE1.ISA Bus Write Timing Diagram7AC Electrical Characteristics (Note 13)The following specifications apply for +4.25V DC ≤V CC ≤+5.75V DC unless otherwise specified.Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.(Continued)SymbolParameterConditionsTypical Limits Units (Note 8)(Note 9)(Limits)ISA READ TIMING t SDRD (setup)Data Valid to IORD Inactive 120ns (min)t SDRD (hold)IORD Inactive to Data Invalid5ns (min)t RD (setup)IORD Active to Rising Edge of SYSCLK 20ns (min)t RS (delay)Rising Edge of SYSCLK number 1to Data ValidWith 8.33MHz SYSCLK360ns (max)DS100036-5The delay between consecutive IORD and IOWR pulses should be greater than 50ns to ensure that a Power-on reset does not occur unintentionally.(See Section 3.2‘Resets’)FIGURE 2.ISA Bus Read Timing DiagramL M 79 8AC Electrical Characteristics (Note 13)The following specifications apply for +4.25V DC ≤V CC ≤+5.75V DC unless otherwise specified.Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.(Continued)SymbolParameterConditionsTypical Limits Units (Note 8)(Note 9)(Limits)SERIAL BUS TIMING CHARACTERISTICS t 1SCL (Clock)Period2.5µs (min)t 2Data In Setup Time to SCL High 100ns (min)t 3Data Out Stable After SCL Low0ns (min)t 4SDA Low Setup Time to SCL Low (start)100ns (min)t 5SDA High Hold Time After SCL High (stop)100ns (min)Note 1:Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.Operating Ratings indicate conditions for which the device is functional,but do not guarantee specific performance limits.For guaranteed specifications and test conditions,see the Electrical Characteristics.The guaranteed specifications apply only for the test conditions listed.Some performance characteristics may degrade when the device is not operated under the listed test conditions.Note 2:All voltages are measured with respect to GND,unless otherwise specifiedNote 3:When the input voltage (V IN )at any pin exceeds the power supplies (V IN <(GNDD or GNDA)or V IN >V CC ),the current at that pin should be limited to 5mA.The 20mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 5mA to four.Note 4:The maximum power dissipation must be derated at elevated temperatures and is dictated by T J max,θJA and the ambient temperature,T A .The maximum allowable power dissipation at any temperature is P D =(T J max−T A )/θJA .Note 5:The human body model is a 100pF capacitor discharged through a 1.5k Ωresistor into each pin.The machine model is a 200pF capacitor discharged directly into each pin.Note 6:See the section titled “Surface Mount”found in any post 1986National Semiconductor Linear Data Book for other methods of soldering surface mount devices.Note 7:Each input and output is protected by a nominal 6.5V breakdown voltage zener diode to GND;as shown below,input voltage magnitude up to 0.3V above V CC or 0.3V below GND will not damage the LM79.There are parasitic diodes that exist between the inputs and the power supply rails.Errors in the ADC conversion can occur if these diodes are forward biased by more than 50mV.As an example,if V CC is 4.50V DC ,input voltage must be ≤4.55V DC ,to ensure accurate conversions.DS100036-6FIGURE 3.Serial Bus Timing DiagramLM799AC Electrical Characteristics (Note 13)The following specifications apply for +4.25V DC ≤V CC ≤+5.75V DC unless otherwise specified.Boldface limits apply for T A =T J =T MIN to T MAX ;all other limits T A =T J =25˚C.(Continued)Note 8:Typicals are at T J =T A =25˚C and represent most likely parametric norm.Note 9:Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).Note 10:TUE (Total Unadjusted Error)includes Offset,Gain and Linearity errors of the ADC and any error introduced by the amplifiers as shown in the circuit of Figure 13.Note 11:Total Monitoring Cycle Time includes temperature conversion,7analog input voltage conversions and 3tachometer readings.Each temperature and input voltage conversion takes 100ms typical and 112ms maximum.Fan tachometer readings take 20ms typical,at 4400rpm,and 200ms max.Note 12:The total fan count is based on 2pulses per revolution of the fan tachometer output.Note 13:Timing specifications are tested at the TTL logic levels,V IL =0.4V for a falling edge and V IH =2.4V for a rising edge.TRI-STATE output voltage is forced to 1.4V.DS100036-7An x indicates that the diode exists.Pin Name D1D2D3IORD x IOWR x SYSCLK xD0–D7x x x SMI__IN x Chassis Intrusion x x Power Switch BypassxxPin Name D1D2D3FAN1–FAN3x SCLxSDA x x RESET x x VID4/NTESTxxxPin Name D1D2D3−IN6x x FB6x x x FB5x x x −IN5x x IN4–IN0x x x VID3–VID0xxxPin Name D1D2D3BTI x x NMI/IRQ xx x SMI xx A0–A2x CSxFIGURE 4.ESD Protection Input StructureL M 79 10Test CircuitFunctional Description1.0GENERAL DESCRIPTIONThe LM79provides7analog inputs,a temperature sensor,a Delta-Sigma ADC(Analog-to-Digital Converter),3fan speed counters,WATCHDOG registers,and a variety of inputs and outputs on a single chip.Interfaces are provided for both the ISA parallel bus or Serial Bus.The LM79performs power supply,temperature,and fan monitoring for personal com-puters.The LM79continuously converts analog inputs to8-bit digital words with a16mV LSB(Least Significant Bit)weighting, yielding input ranges of0V to4.096V.The two negative analog inputs provide inverting op amps,with their non-inverting input referred to ground.With additional exter-nal feedback components,these inputs provide measure-ments of negative voltages(such as-5V and-12V power supplies).The analog inputs are useful for monitoring sev-eral power supplies present in a typical computer.Tempera-ture is converted to an8-bit two’s-complement digital word with a1˚C LSB.Fan inputs measure the period of tachometer pulses from the fans,providing a higher count for lower fan speeds.The fan inputs are digital inputs with an acceptable range of0V to 5V and a transition level of approximately1.4V.Full scale fan counts are255(8-bit counter)and this represents a stopped or very slow fan.Nominal speeds,based on a count of153, are programmable from1100to8800RPM on FAN1and FAN2,with FAN3fixed at4400RPM.Signal conditioning circuitry is included to accommodate slow rise and fall times. The LM79provides a number of internal registers,as de-tailed in Figure6.These include:•Configuration Register:Provides control and con-figuration.•Interrupt Status Registers:Two registers to provide status of each WATCHDOG limit or Interrupt event.•Interrupt Mask Registers:Allows masking of indi-vidual Interrupt sources,as well as separate masking for each of both hardware Interrupt outputs.•VID/Fan Divisor Registers:A register to read the status of the VID0-VID3input lines.The high bits of this register contain the divisor bits for FAN1and FAN2in-puts.•Serial Bus Address Register:Contains the Serial Bus address.At power on it assumes the default value of 0101101binary,and can be altered via the ISA or Serial Bus interface.•Chip Reset/VID4/Device ID Register:Allows resetting of all the registers to the default power-on reset value.The state of VID4is reflected in this register.The identity of the divice being used can be determined by reading the state of the D7of this register.An LM79would be identified when D7is set high.•POST RAM:FIFO RAM to store up to32bytes of8-bit POST codes.Overflow of the POST RAM will set an Interrupt.The POST RAM,located at base address x0h and x4h,allows for easy decoding to address80h and 84h,the normal addresses for outputting of POST codes.Interrupt will only be set when writing to port x0h or x4h.The POST RAM can be read via ports85h and86h.•Value RAM:The monitoring results:temperature,volt-ages,fan counts,and WATCHDOG limits are all con-tained in the Value RAM.The Value RAM consists of a total of64bytes.The first11bytes are all of the results, the next19bytes are the WATCHDOG limits,and are located at20h-3Fh,including two unused bytes in the upper locations.The next32bytes,located at60h-7Fh, mirror the first32bytes with identical contents.The only difference in the upper bytes are that they auto-increment the LM79Internal Address Register when read from or written to via the ISA bus(auto-increment is not available for Serial Bus communications).When the LM79is started,it cycles through each measure-ment in sequence,and it continuously loops through the sequence approximately once every second.Each mea-sured value is compared to values stored in WATCHDOG,or Limit registers.When the measured value violates the pro-grammed limit the LM79will set a corresponding Interrupt in the Interrupt Status Registers.Two hardware Interrupt lines, SMI and NMI/IRQ,are fully programmable with separate masking of each Interrupt source,and masking of each output.In addition,the Configuration Register has control bits to enable or disable the hardware Interrupts. Additional digital inputs are provided for chaining of SMI (System Management Interrupt),outputs of multiple external LM75temperature sensors via the BTI(Board Temperature Interrupt)input,and a Chassis Intrusion input.The Chassis DS100036-8FIGURE5.Digital Output Load Circuitry LM79Functional Description(Continued)Intrusion input is designed to accept an active high signal from an external circuit that latches when the case is re-moved from the computer.2.0INTERFACEThe LM79only decodes the three lowest address bits on the ISA bus.Referring to the ISA bus timing diagrams in and ,the Chip Select Input,CS,should be taken low by external address decoder circuitry to access the LM79.The LM79decodes the following base addresses:-Port x0h:Power On Self Test codes from ISA bus.-Port x4h:Power On Self Test codes from ISA bus.-Port x5h:The LM79s Internal Address Register -Port x6h:Data RegisterIORD is the standard ISA bus signal that indicates to the LM79that it may drive data on to the ISA data bus.IOWR is the standard ISA command to the LM79that it may latch data from the ISA bus.SYSCLK is the standard ISA SYSCLK,typically 8.33MHz.This clock is used only for timing of the ISA interface of theLM79.All other clock functions within LM79such as the ADC and fan counters are done with a separate asynchronous internal clock.A typical application designed to utilize the POST RAM would decode the LM79to the address space starting at 80h,which is where POST codes are output to.Otherwise,the LM79can be decoded into a different desired address space.To communicate with an LM79Register,first write the ad-dress of that Register to Port x5h.Read or write data from or to that register via Port x6h.A write will take IOWR low,while a read will take IORD low.If the Serial Bus Interface and ISA bus interface are used simultaneously there is the possibility of collision.To prevent this from occurring in applications where both interfaces are used,read port x5h and if the Most Significant Bit,D7,is high,ISA communication is limited to reading port x5h only until this bit is low.A Serial Bus communication occurring while ISA is active will not be a problem,since even a single bit of Serial Bus communication requires 10microseconds,in comparison to less than a microsecond for an entire ISA communication.L M 79Functional Description(Continued)DS100036-9FIGURE6.LM79Register Structure LM79Functional Description(Continued)2.1Internal Registers of the LM79TABLE 1.The internal registers and their corresponding internal LM79address is as follows:RegisterLM79Internal HexAddress Power on ValueNotes(This is the data to be written to Port x5h)Configuration Register 40h 00001000Interrupt Status Register 141h 00000000Auto-increment to the address of Interrupt Status Register 2after a read or write to Port x6h.Interrupt Status Register 242h 00000000SMI Mask Register 143h 00000000Auto-increment to the address of SMI Mask Register 2after a read or write to Port x6h.SMI Mask Register 244h 00000000NMI Mask Register 145h 00000000Auto-increment to the address of NMI Mask Register 2after a read or write to Port x6h.NMI Mask Register 246h 01000000VID/Fan Divisor Register47h0101XXXXThe first four bits set the divisor for FanCounters 1and 2.The lower four bits reflect the state of the VID0-VID3inputs.Serial Bus Address Register 48h 00101101Chip Reset/VID4/Device ID Register 49h 1100000XD7identifies this device as the LM79.D0reflects the state of VID4.POST RAM00h-1FhAuto-increment when written to from Port x0h or x4h.Auto-increment after a read or write to Port x6h,with a separate pointer.Auto-incrementing stops when address 1Fh is reached.Value RAM 20h-3Fh Value RAM60h-7FhAuto-increment after a read or write to Port x6h.Auto-incrementing stops when address 7Fh is reached.A typical communication with the LM79would consist of:1.Write to Port x5h the LM79Internal Address (from col-umn 2above)of the desired register.Alternatively,when both ISA and Serial Bus interfaces are used,the first step in a communication may be to read Port x5h to ascertain the state of the Busy bit to avoid contention with an Serial Bus communication.2.Read or write the corresponding registers data withreads/writes from Port x6h.The LM79Internal Address latches,and does not have to be written if it is already pointing at the desired register.The LM79Internal Address Register is read/write (Bit 7is read only).L M 79Functional Description(Continued) 2.2Serial Bus InterfaceWhen using the Serial Bus Interface a write will always consist of the LM79Serial Bus Interface Address byte,fol-lowed by the Internal Address Register byte,then the data byte.There are two cases for a read:1.If the Internal Address Register is known to be at thedesired Address,simply read the LM79with the Serial Bus Interface Address byte,followed by the data byte read from the LM79.2.If the Internal Address Register value is unknown,writeto the LM79with the Serial Bus Interface Address byte, followed by the Internal Address Register byte.Then restart the Serial Communication with a Read consisting of the Serial Bus Interface Address byte,followed by the data byte read from the LM79.In all other respects the LM79functions identically for Serial Bus communications as it does for ISA communications.Auto-Increment does not operate.When writing to or reading from a Register which Auto-Increments with ISA communi-cations,the Register must be manually incremented for Serial Bus communications.The default power on Serial Bus address for the LM79is: 0101101binary.This address can be changed by writing any desired value to the Serial Bus address register,which can be done either via the ISA or Serial Bus.During and Serial Bus communication on the BUSY bit(bit7)in the address register at x5h will be high,and any ISA activity in that situation should be limited to reading port x5h only.All of these communications are depicted in the Serial Bus Interface Timing Diagrams as shown in Figure7.DS100036-10(a)Serial Bus Write to the Internal Address Register followed by the Data ByteDS100036-11(b)Serial Bus Write to the Internal Address Register OnlyDS100036-12 (c)Serial Bus Read from a Register with the Internal Address Register Preset to Desired LocationFIGURE7.Serial Bus Timing LM79Functional Description(Continued)3.0USING THE LM793.1Power OnWhen power is first applied,the LM79performs a “power on reset”on several of its registers.The power on condition of registers in shown in Table I.Registers whose power on values are not shown have power on conditions that are indeterminate (this includes the value RAM and WATCH-DOG limits).The ADC is inactive.In most applications,usu-ally the first action after power on would be to write WATCH-DOG limits into the Value RAM.3.2ResetsConfiguration Register INITIALIZATION accomplishes the same function as power on reset on most registers.The POST RAM,Value RAM conversion results,and Value RAM WATCHDOG limits are not Reset and will be indeterminate immediately after power on.If the Value RAM contains valid conversion results and/or Value RAM WATCHDOG limits have been previously set,they will not be affected by a Configuration Register INITIALIZATION.Power on reset,or Configuration Register INITIALIZATION,clear or initialize the following registers (the initialized values are shown on Table 1):•Configuration Register •Interrupt Status Register 1•Interrupt Status Register 2•SMI Mask Register 1•SMI Mask Register 2•NMI Mask Register 1•NMI Mask Register 2•VID/Fan Divisor Register•Serial Bus Address Register (Power on reset only,not reset by Configuration Register INITIALIZATION)Configuration Register INITIALIZATION is accomplished by setting Bit 7of the Configuration Register high.This bit automatically clears after being set.The LM79allows the user to perform an unconditional com-plete Power-on reset by writing a one to Bit 5of the Chip Reset/VID4/Device ID Register.The LM79allows an uncon-ditional complete Power-on reset to be initiated by taking the IOWR and IORD signal lines low simultaneously,for at least 50ns,while CS is high.The delay between consecutive IORD and IOWR pulses should be greater than 50ns to ensure that an Power-on reset does not occur unintention-ally.In systems where the serial bus is only being used it may be advantageous to take both IOWR and IORD to the system reset pulse.In this way whenever the system is reset the LM79will also be reset to its initial Power-on state.3.3Using the Configuration RegisterThe Configuration Register provides all control over the LM79.At power on,the ADC is stopped and INT__Clear is asserted,clearing the SMI and NMI/IRQ hardwire outputs.The Configuration Register starts and stops the LM79,en-ables and disables interrupt outputs and modes,and pro-vides the Reset function described in Section 3.2.Bit 0of the Configuration Register controls the monitoring loop of the LM79.Setting Bit 0low stops the LM79monitor-ing loop and puts the LM79in shutdown mode,reducing power consumption.ISA and Serial Bus communication ispossible with any register in the LM79although activity on these lines will increase shutdown current,up to as much as maximum rated supply current,while the activity takes place.Taking Bit 0high starts the monitoring loop,described in more detail subsequently.Bit 1of the Configuration Register enables the SMI Interrupt hardwire output when this bit is taken high.Similarly,Bit 2of the Configuration Register enables the NMI/IRQ Interrupt hardwire output when taken high.The NMI/IRQ mode is determined by Bit 5in the Configuration Register.When Bit 5is low the output is an active low IRQ output.Taking Bit 5high inverts this output to provide an active high NMI output.The Power Switch Bypass provides an active low at the open drain Power Switch Bypass output when set high.This is intended for use in software power control by activating an external power control MOSFET.3.4Starting ConversionThe monitoring function (Analog inputs,temperature,and fan speeds)in the LM79is started by writing to the Configu-ration Register and setting INT__Clear (Bit 3),low,and Start (bit 0),high.The LM79then performs a “round-robin”moni-toring of all analog inputs,temperature,and fan speed inputs approximately once a second.The sequence of items being monitored corresponds to locations in the Value RAM and is:1.Temperature 2.IN03.IN14.IN25.IN36.IN47.-IN58.-IN69.Fan 110.Fan 211.Fan 33.5Reading Conversion ResultsThe conversion results are available in the Value RAM.Conversions can be read at any time and will provide the result of the last conversion.Because the ADC stops,and starts a new conversion whenever it is read,reads of any single value should not be done more often then once every 120ms.When reading all values,allow at least 1.5seconds between reading groups of values.Reading more frequently than once every 1.5seconds can also prevent complete updates of Interrupt Status Registers and Interrupt Output’s.A typical sequence of events upon power on of the LM79would consist of:1.Set WATCHDOG Limits2.Set Interrupt Masks3.Start the LM79monitoring process4.0ANALOG INPUTSThe 8-bit ADC has a 16mV LSB,yielding a 0V to 4.08V (4.096–1LSB)input range.This is true for all analog inputs.In PC monitoring applications these inputs would most often be connected to power supplies.The 2.5V and 3.3V supplies can be directly connected to the inputs.The 5V and 12V inputs should be attenuated with external resistors to any desired value within the input range.L M 79。

MC79L05F中文资料

ParameterSymbol Value Unit Input VoltageV 130VOperating Junction Temperature T OPR -30---+75o C Storage Temperature RangeT STG-40---+125oCElectrical Characteristics( V i =10V, I O =40mA, 0o C <Tj<125o C,C1=0.33uF, C O =0.1uF, unless otherwise specified)ParameterSymMinTypMaxTest conditionsOutput Voltage V 0 4.8V5.0V 5.2V Vi=10V,I O =40mA LoadRegulation V o -I O 7.0mV 60mV I o =1mA-100mA,V i =10VLineregulation V o -V i15mV 150mV 7V ƙV i ƙ20V,I O =40mA Quiescent CurrentI q 3.5mA 6.0mAVi=10V,I O =40mA Output Noise Voltage V N120µV10Hz ƙf ƙ100KHz Vi=10V,I O =40mA Ripple RejectionRR 41dB 71dB8V ƙV 1ƙ18V,I O =40mAf=120Hz,T j =25oC e iN =1V P-P*Note:Bypass Capacitors are recommended for optimum stability and transient response and should be located as close as possible to the regulatorsInput C in 0.33µO Output µFTypical Application:Revision: 2 2007/03/19www.mccsemi .com1 of 2Revision: 2 2007/03/19Micro Commercial Componentswww.mccsemi .com2 of 2products are represented on our website, harmless against all damages.***APPLICATIONS DISCLAIMER******IMPORTANT NOTICE***Aerospace or Military Applications.Products offer by Micro Commercial Components Corp .are not intended for use in Medical,Micro Commercial Components Corp .reserve s the right to make changes without further notice to any product herein to make corrections, modifications , enhancements , improvements , or other changes .Micro Commercial Components Corp .does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights ,nor the rights of others . The user of products in such applications shall assume all risks of such use and will agree to hold Micro Commercial Components Corp .and all the companies whose。

LM79L05ACZX中文资料

©2002 Fairchild Semiconductor CorporationRev. 1.0.2Features•Output Current up to 100mA •No External Components•Internal Thermal Over Load Protection•Internal Short Circuit Current Limiting •Output V oltage Offered in ±5% Tolerance•Output V oltage of -5V , -8V , -12V , -15V , -18V , -24VDescriptionThese regulators employ internal current limiting and thermal shutdown, making them essentially indestructible.TO-9218-SOPSOT-8911.GND2.Input3.Output 1. Output 2.3.6.7. Input 5. GND4.8. NC1Internal Block DiagramQ1Q2Q3Q4Q5Q6Q7Q8Q9Q10Q11Q12Q13Q14Q15Q16Q17R1R2R3R4R5R6R7R15R16R17R18R26R22R24R25R29R R28R23+R21R27D3D2D1C1GNDOutputInputMC79LXXA/LM79LXXA3-Terminal 0.1A Negative Voltage Regulato rMC79LXXA/LM79LXXA2Absolute Maximum RatingsElectrical Characteristics(MC79L05A/LM79L05A)(V I = -10V, I O = 40mA, C I = 0.33µF, C O = 0.1µF, 0°C ≤T J ≤ +125°C, unless otherwise specified)Note:1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be takeninto account separately. Pulse testing with low duty is used.ParameterSymbol Value Unit Input Voltage (for V o = -5V to -8V)(for V O = -12V to -18V)(for V O = -24V)V I -30-35-40V Operating Temperature Range T OPR 0 ~ +125°C Storage Temperature RangeT STG-65 ~ +150°CParameter Symbol ConditionsMin.Typ.Max.Unit Output Voltage V O T J = +25°C-4.8-5.0-5.2V Line Regulation (Note1)∆V O T J =+25°C -7.0V ≥ V I ≥ -20V-15150mV -8V ≥ V I ≥ -20V --100mV Load Regulation (Note1)∆V O T J =+25°C1.0mA ≤ I O ≤ 100mA -2060mV 1.0mA ≤ I O ≤ 40mA -1030mV Output Voltage V O -7.0V ≥ V I ≥ -20V, 1.0mA ≤ I O ≤ 40mA -4.75--5.25V V I = -10V, 1.0mA ≤ I O ≤ 70mA -4.75--5.25V Quiescent Current I QT J =+25°C - 2.0 5.5mA T J = +125°C -- 6.0Quiescent Current ChangeWith Line ∆I Q -8V ≥ V I ≥ -20V -- 1.5mA With Load∆I Q 1.0mA ≤ I O ≤ 40mA--0.1mA Output Noise Voltage V N T A = +25°C,10Hz ≤ f ≤ 100kHz -30-µV Ripple Rejection RR f = 120Hz, -8V ≥ V I ≥ -18V T J = +25°C 4160-dB Dropout VoltageV DT J = +25°C- 1.7-VMC79LXXA/LM79LXXA3Electrical Characteristics (MC79L08A) (Continued)(V I = -14V, I O = 40mA, C I = 0.33µF, C O = 0.1µF, 0°C ≤T J ≤ +125°C, unless otherwise specified)Note:1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be takeninto account separately. Pulse testing with low duty is used.Parameter Symbol ConditionsMin.Typ.Max.Unit Output Voltage V O T J = +25°C-7.7-8.0-8.3V Line Regulation(Note1)∆V O T J = +25°C -10.3V ≥ V I ≥ -23V--175mV -12V ≥ V I ≥ -23V --125mV Load Regulation (Note1)∆V O T J = +25°C1.0mA ≤ I o ≤ 100mA --80mV 1.0mA ≤ I o ≤ 40mA --40mV Output Voltage V O -10.3V ≥ V I ≥ -23V, 1.0mA ≤ I o ≤ 40mA -7.6--8.4V V I = -14V, 1.0mA ≤ I o ≤ 70mA -7.6--8.4Quiescent Current I qT j = +25°C -- 6.0mA T j = +125°C -- 5.5Quiescent Current ChangeWith Line ∆I Q -11.7V ≥ V I ≥ -23V -- 1.5mA With Load1.0mA ≤ I o ≤ 40mA--0.1mA Output Noise Voltage V N T j = +25°C,10Hz ≤ f ≤ 100kHz -50-µV Ripple Rejection RR f = 120Hz, -11V ≥ V I ≥ -21V T j = +25°C 3955-dB Dropout VoltageV DT j = +25°C- 1.7-VMC79LXXA/LM79LXXA4Electrical Characteristics(MC79L12A) (Continued)(V I = -19V, I O = 40mA, C I = 0.33µF, C O = 0.1µF, 0°C ≤T J ≤ +125°C, unless otherwise specified)Note:1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be takeninto account separately. Pulse testing with low duty is used.Parameter Symbol ConditionsMin.Typ.Max.Unit Output Voltage V O T J = +25°C-11.5-12.0-12.5V Line Regulation (Note1)∆V O T J = +25°C -14.5V ≥ V I ≥ -27V--250mV -16V ≥ V I ≥ -27V --200mV Load Regulation (Note1)∆V O T J = +25°C1.0mA ≤ I O ≤ 100mA --100mV 1.0mA ≤ I O ≤ 40mA --50mV Output Voltage V O -14.5V > V I > -27V, 1.0mA ≤ I O ≤ 40mA -11.4--12.6V V I = -19V, 1.0mA ≤ I O ≤ 70mA -11.4--12.6V Quiescent Current I QT J = +25°C -- 6.0mA T J = +125°C -- 6.5Quiescent Current ChangeWith Line ∆I Q -16V ≥ V I ≥ -27V -- 1.5mA With Load∆I Q 1.0mA ≤ I O ≤ 40mA--0.1mA Output Noise Voltage V N T A = +25°C,10Hz ≤ f ≤ 100kHz -80-µV Ripple Rejection RR f = 120Hz, -15V ≥ V I ≥ -25V T J = +25°C 3742-dB Dropout VoltageV DT J = +25°C- 1.7-VMC79LXXA/LM79LXXA5Electrical Characteristics(MC79L15A) (Continued)(V I = -23V, I O = 40mA, C I = 0.33µF, C O = 0.1µF, 0°C ≤T J ≤ +125°C, unless otherwise specified)Note:1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be takeninto account separately. Pulse testing with low duty is used.Parameter Symbol ConditionsMin.Typ.Max.Unit Output Voltage V O T J = +25°C-14.4-15.0-15.6V Line Regulation (Note1)∆V O T J = +25°C -17.5V ≥ V I ≥ -30V--300mV -20V ≥ V I ≥ -30V --250mV Load Regulation (Note1)∆V O T J = +25°C1.0mA ≤ I O ≤ 100mA --150mV 1.0mA ≤ I O ≤ 40mA --75mV Output Voltage V O -17.5V ≥ V I ≥ -30V, 1.0mA ≤ I O ≤ 40mA -14.25--15.75V V I = -23V, 1.0mA ≤ I O ≤ 70mA -14.25--15.75V Quiescent Current I QT J = +25°C -- 6.0mA T J = +125°C -- 6.5Quiescent Current ChangeWith Line ∆I Q -20V ≥ V I ≥ -30V -- 1.5mA With Load∆I Q 1.0mA ≤ I O ≤ 40mA--0.1mA Output Noise Voltage V N T A = +25°C,10Hz ≤ f ≤ 100kHz -90-µV Ripple Rejection RR f = 120Hz, -18.5V ≥ V I ≥ -28.5V T J = +25°C 3439-dB Dropout VoltageV DT J = +25°C- 1.7-VMC79LXXA/LM79LXXA6Electrical Characteristics(MC79L18A) (Continued)(V I = -27V, I O = 40mA, C I = 0.33µF, C O = 0.1µF, 0°C ≤T J ≤ +125°C, unless otherwise specified)Note:1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be takeninto account separately. Pulse testing with low duty is used.Parameter Symbol ConditionsMin.Typ.Max.Unit Output Voltage V O T J = +25°C-17.3-18.0-18.7V Line Regulation (Note1)∆V O T J = +25°C -20.7V ≥ V I ≥ -33V--325mV -21V ≥ V I ≥ -33V --275mV Load Regulation (Note1)∆V O T J = +25°C1.0mA ≤ I O ≤ 100mA --170mV 1.0mA ≤ I O ≤ 40mA --85mV Output Voltage V O -20.7V > V I > -33V, 1.0mA ≤ I O ≤ 40mA -17.1--18.9V V I = -27V, 1.0mA ≤ I O ≤ 70mA -17.1--18.9V Quiescent Current I QT J = +25°C -- 6.5mA T J = +125°C -- 6.0Quiescent Current ChangeWith Line ∆I Q -21V ≥ V I ≥ -33V -- 1.5mA With Load∆I Q 1.0mA ≤ I O ≤ 40mA--0.1mA Output Noise Voltage V N T A =+25°C,10Hz ≤ f ≤ 100kHz -150-µV Ripple Rejection RR f = 120Hz, -23V ≥ V I ≥ -33V T J = +25°C 3348-dB Dropout VoltageV DT J = +25°C- 1.7-VMC79LXXA/LM79LXXA7Electrical Characteristics(MC79L24A) (Continued)(V I = -33V, I O = 40mA, C I = 0.33µF, C O = 0.1µF, 0°C ≤T J ≤ +125°C, unless otherwise specified)Note:1. Load and line regulation are specified at constant junction temperature. Change in V O due to heating effects must be takeninto account separately. Pulse testing with low duty is used.Parameter Symbol ConditionsMin.Typ.Max.Unit Output Voltage V O T J = +25°C-23-24-25V Line Regulation (Note1)∆V O T J = +25°C -27V ≥ V I ≥ -38V--350mV -28V ≥ V I ≥ -38V --300mV Load Regulation (Note1)∆V O T J = +25°C1.0mA ≤ I O ≤ 100mA --200mV 1.0mA ≤ I O ≤ 40mA --100mV Output Voltage V O -27V ≥ V I ≥ -38V, 1.0mA ≤ I O ≤ 40mA -22.8--25.2V V I = -33V, 1.0mA ≤ I O ≤ 70mA -22.8--25.2V Quiescent Current I QT J = +25°C -- 6.5mA T J = +125°C -- 6.0Quiescent Current ChangeWith Line ∆I Q -28V ≥ V I ≥ -38V -- 1.5mA With Load∆I Q 1.0mA ≤ I O ≤ 40mA--0.1mA Output Noise Voltage V N T A = +25°C,10Hz ≤ f ≤ 100kHz -200-µV Ripple Rejection RR f = 120Hz, -29V ≥ V I ≥ -35V T J = +25°C 3147-dB Dropout VoltageV DT J = +25°C- 1.7-VMC79LXXA/LM79LXXA8Typical ApplicationDesign ConsiderationsThe MC79LXXA/LM79LXXA Series of fixed voltage regulators are designed with Thermal Overload Protection that shuts down the circuit when subjected to an excessive power overload condition. Internal Short Circuit Protection that limits the maximum current the circuit will pass. In many low current applications, compensation capacitors are not required. However,it is recommended that the regulator input be bypassed with a capacitor if the regulator is connected to the power supply filter with long wire lengths, or if the output load capacitance is large. An input bypass capacitor should be selected to provide good high frequency characteristics to insure stable operation under all load conditions. A 0.33µF or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The bypass capacitor should be mounted with the shortest possible leads directly across the regulator's input terminals. Normally good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator has no external sense lead. Bypassing the output is also recommended.A common ground is required between the Input and the output voltages. The input voltage must remain typically 2.0V above the output voltage even during the low point on the input ripple voltage. * C 1 is required if regulator is located an appreciable distance from power supply filter.* C O improves stability and transient response.Figure 1.Positive And Negative RegulatorFigure 2.Typical ApplicationLM78LXXA MC78LXXALM79LXXA MC79LXXAIMC79LXXA LM79LXXAMC79LXXA/LM79LXXA Mechanical DimensionsPackageDimensions in millimetersTO-929MC79LXXA/LM79LXXAMechanical Dimensions (Continued)PackageDimensions in millimeters8-SOP10MC79LXXA/LM79LXXA Mechanical Dimensions (Continued)PackageDimensions in millimetersSOT-8911MC79LXXA/LM79LXXA12/11/02 0.0m 001Stock#DSxxxxxxxx2002 Fairchild Semiconductor CorporationLIFE SUPPORT POLICYFAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:1.Life support devices or systems are devices or systemswhich, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can bereasonably expected to result in a significant injury of the user.2. A critical component in any component of a life supportdevice or system whose failure to perform can bereasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.DISCLAIMERFAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANYLIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.Ordering InformationProduct Number Package Operating TemperatureLM79L05ACZ TO-92 0 ~ +125°C Product Number PackageOperating TemperatureMC79L05ACP TO-920 ~ +125°CMC79L08ACP MC79L12ACP MC79L15ACP MC79L18ACP MC79L24ACP MC79L05ACD 8-SOP MC79L15ACD MC79L05ACHSOT-89。

LM7805中文资料

LM7805中文资料目录1.lm7805介绍2.实际应用3.引脚序号、引脚功能4.lm7805应用电路5.7805电参数三端稳压集成电路lm7805。

电子产品中，常见的三端稳压集成电路有正电压输出的lm78 ××系列和负电压输出的lm79××系列。

顾名思义，三端IC 是指这种稳压用的集成电路，只有三条引脚输出，分别是输入端、接地端和输出端。

它的样子象是普通的三极管，TO- 220 的标准封装，也有lm9013样子的TO-92封装。

1.lm7805介绍用lm78/lm79系列三端稳压IC来组成稳压电源所需的外围元件极少，电路内部还有过流、过热及调整管的保护电路，使用起来可靠、方便，而且价格便宜。

该系列集成稳压IC型号中的lm78或lm79后面的数字代表该三端集成稳压电路的输出电压，如lm7806表示输出电压为正6V，lm7909表示输出电压为负9V。

因为三端固定集成稳压电路的使用方便，电子制作中经常采用。

最大输出电流1.5A，LM78XX系列输出电压分别为5V;6V;8V;9V;10V;12V;15V;18V;24V。

2.实际应用在实际应用中，应在三端集成稳压电路上安装足够大的散热器（当然小功率7805IC内部电路图.的条件下不用）。

当稳压管温度过高时，稳压性能将变差，甚至损坏。

当制作中需要一个能输出1.5A以上电流的稳压电源，通常采用几块三端稳压电路并联起来，使其最大输出电流为N个1.5A，但应用时需注意：并联使用的集成稳压电路应采用同一厂家、同一批号的产品，以保证参数的一致。

另外在输出电流上留有一定的余量，以避免个别集成稳压电路失效时导致其他电路的连锁烧毁。

在lm78 ** 、lm79 ** 系列三端稳压器中最常应用的是TO-220 和TO-202 两种封装。

这两种封装的图形以及引脚序号、引脚功能如附图所示。

图中的引脚号标注方法是按照引脚电位从高到底的顺序标注的。

H79L05中文资料

█ 主要特点
输出电流超过 100mA 低噪声纹波抑制比高具有功放输出保护过热保护过流及短路保护
█ 极限值（Ta=25℃）
VIN——输入电压……………………………………………-30V
Tamb——工作环境温度……………………………… -20~85℃ Tstg——贮存温度…………………………………… -55~150℃ Tj——结温…………………………………………… -55~150℃
参数符号
符号说明最小值典型值最大值
单位
测试条件
-4.8 -5.0 -5.2
Tj=25℃
VO
输出电压
-4.75
-5.25 V -20V≤VIN≤-7V,1mA≤IO≤40mA
-4.75
-5.25
VIN=-10V,1mA≤IO≤70mA
ΔVO 电压调整率
15
150
Tj=25℃, -20V≤VIN≤-7V
RR
纹波抑制比
30 μV Tj=25℃,10Hz≤f≤100kHz
41
60
dB Tj=25℃, -18V≤VIN≤-8V, f=120Hz
VD
下降电压
1.7VBiblioteka Tj=25℃█ 外形图及引脚排列
TO-92
1―地 GND 2―输入 IN 3―输出 OUT
█ 功能框图
█ 典型连接图
元器件交易网汕头华汕电子器件有限公司
H 79L05
B
█ 电参数（除非另有说明，VIN=-10V,IO=40mA,0℃≤Tj≤125℃,CIN=0.33μF,COUT=0.1μF）
mV
100
Tj=25℃, -20V≤VIN≤-8V
ΔVO 负载调整率

79L05中文资料

15
49
mV mV dB
20 10 40
1.7
60 30
mV µV V
mV
Biascurrent Bias ccurrent rrent
Bias current change
6 5.5 1.5 0.1
mA
mA
mA
Hale Waihona Puke mA‡ Pulse-testing techniques maintain TJ as close to TA as possible. Thermal effects must be taken into account separately. All characteristics are measured with a 0.33-µF capacitor across the input and a 0.1-µF capacitor across the output. Full range for the 7 9L05 is T J = 0°C to 70°C
3-1
Wing Shing Computer Components Co., (H.K.)Ltd. Homepage: Tel:(852)2341 9276 Fax:(852)2797 8153 E-mail: wsccltd@
元器件交易网
recommended operating conditions
79L05 Input voltage, VI Output current, IO Operating virtual junction temperature, TJ 0 MIN –7 MAX – 20 UNIT V mA °C
100
70
3-2

VICTOR 79过程万用表中文说明书

如要修理由于运输而损坏的仪器，请与本公司最近的仪器服务中心联系。由于运输损坏与运输员的赔偿协商应由顾客来完成。
ii
目录
标题
页码
介绍 ................................................................................. 1 安全说明.............................................................................. 1 如何开始.............................................................................. 3 熟悉仪表.............................................................................. 4 测量电气参数.......................................................................... 17
iv
表目录
表
标题
页码
1. 国际符号....................................................................... 2 2. 测量或输出插口................................................................. 5 3. 测量时旋钮开关的位置........................................................... 7 4. 输出时旋钮开关的位置........................................................... 9 5. 按键........................................................................... 12 6. 显示........................................................................... 15 7. 开机通电选择................................................................... 23 8. 典型的碱性电池寿命............................................................. 24

TS79L15中文资料

TS79L00 series3-Terminal Low Current Negative Voltage RegulatorVoltage Range - 5V to - 24V Output Current up to 100mAGeneral DescriptionThe TS79L00 Series of negative voltage regulators are inexpensive, easy-to-use devices suitable for a multitude of applications that require a regulated supply of up to 100mA. Like their higher power TS7900 and TS79M00 Series cousins, these regulators feature internal current limiting and thermal shutdown making them remarkably rugged. No external components are required with the TS79L00 devices in many applications.These devices offer a substantial performance advantage over the traditional zener diode-resistor combination, as output impedance and quiescent current are substantially reduced.This series is offered in 3-pin TO-92, SOT-89 and 8-pin SOP-8 package.FeaturesOutput current up to 100mA No external components required Internal thermal overload protection Internal short-circuit current limitingOutput transistor safe-area compensationOutput voltage offered in 4% toleranceOrdering InformationNote: Where xx denotes voltage option.Part No.Operating Temp.(Ambient)PackageTS79LxxCT TO-92TS79LxxCY SOT-89TS79LxxCS -20 ~ +85 o C SOP-8 Standard ApplicationA common ground is required between the input and theoutput voltages. The input voltage must remain typically 2.0V above the output voltage even during the low point on the Input ripple voltage. XX = these two digits of the type number indicate voltage.* = Cin is required if regulator is located an appreciabledistance from power supply filter.** = Co is not needed for stability; however, it doesimprove transient response.Pin AssignmentPin No.TS79L00CT TS79L00CY TS79L00CSPin Description3 3 1 Output 222, 3, 6, 7Input1 1 5 Ground 4, 8 Non connectedAbsolute Maximum RatingInput Voltage Vin * - 35 V Input Voltage Vin ** - 40 V Power Dissipation TO-92TO-89 SOP-8 Pd0.6250.50.5WOperating Junction Temperature Range T J0 ~ +125 o C Storage Temperature Range T STG-65 ~ +150 o C Note : * TS79L05 to TS79L18** TS79L24TS79L05 Electrical Characteristics(Vin= -10V, Iout=40mA, 0 o C≤Tj≤125 o C, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)Parameter Symbol TestConditions MinTypMaxUnitTj=25 o C - 4.80 - 5 - 5.20Output voltage Vout -7.5V≤Vin≤ -20V,5mA≤Iout≤100mA - 4.75 - 5 - 5.25VLine Regulation REGline Tj=25 o C -7.5V≤Vin≤ -20V,Io=40mA-- 50 150 5mA≤Iout≤100mA -- 20 60Load Regulation REGload Tj=25 o C5mA≤Iout≤40mA --1030mVQuiescent Current Iq Iout=0, Tj=25 o C --36-8V≤Vin≤ -20V -- -- 1.5Quiescent Current Change ∆Iq1mA≤Iout≤40mA ----0.1mAOutput Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25 o C -- 40 -- uVRipple Rejection Ratio RR f=120Hz, -8V≤Vin≤ -18V 41 49 -- dBVoltage Drop Vdrop Tj=25 o C -- 1.7 -- VPeak Output Current Io peak Tj=25 o C --0.15--A z Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature aspossible, and thermal effects must be taken into account separately.z This specification applies only for DC power dissipation permitted by absolute maximum ratings.TS79L06 Electrical Characteristics(Vin= -11V, Iout=40mA, 0 o C≤Tj≤125 o C, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)ParameterTestConditionsMinTypMaxUnitTj=25 o C - 5.76 - 6 - 6.24Output voltage Vout -8.5V≤Vin≤ -21V,5mA≤Iout≤100mA - 5.70 - 6 - 6.30VLine Regulation REGline Tj=25 o C -8.5V≤Vin≤ -21V,Io=40mA-- 50 150 5mA≤Iout≤100mA -- 20 60Load Regulation REGload Tj=25 o C5mA≤Iout≤40mA -- 1030mVQuiescent Current Iq Iout=0, Tj=25 o C --36-9V≤Vin≤ -21V -- -- 1.5Quiescent Current Change ∆Iq1mA≤Iout≤40mA ----0.1mAOutput Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25 o C -- 40 -- uVRipple Rejection Ratio RR f=120Hz, -9V≤Vin≤ -19V 41 49 -- dBVoltage Drop Vdrop Tj=25 o C -- 1.7 -- VPeak Output Current Io peak Tj=25 o C --0.15--A TS79L08 Electrical Characteristics(Vin= -14V, Iout=40mA, 0 o C≤Tj≤125 o C, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)Parameter Symbol TestConditions MinTypMaxUnitTj=25 o C - 7.69 - 8 - 8.32Output Voltage Vout -10.5V≤Vin≤ -23V,5mA≤Iout≤100mA - 7.61 - 8 - 8.40VLine Regulation REGline Tj=25 o C -10.5V≤Vin≤ -23V,Io=40mA-- 80 160 5mA≤Iout≤100mA -- 25 80Load Regulation REGload Tj=25 o C5mA≤Iout≤40mA -- 10 40mVQuiescent Current Iq Iout=0, Tj=25 o C --36-11V≤Vin≤ -23V -- -- 1.5Quiescent Current Change ∆lq1mA≤Iout≤40mA ----0.1mAOutput Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25 o C -- 60 -- uVRipple Rejection Ratio RR f=120Hz, -13V≤Vin≤ -23V 37 57 -- dBVoltage Drop Vdrop Tj=25 o C -- 1.7 -- VPeak Output Current Io peak Tj=25 o C --0.15--A z Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature aspossible, and thermal effects must be taken into account separately.z This specification applies only for DC power dissipation permitted by absolute maximum ratings.TS79L09 Electrical Characteristics(Vin= -15V, Iout=40mA, 0 o C≤Tj≤125 o C, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)Parameter Symbol TestConditions MinTypMaxUnitTj=25 o C - 8.65 - 9 - 9.36Output Voltage Vout -11.5V≤Vin≤ -24V,5mA≤Iout≤100mA - 8.57 - 9 - 9.45VLine Regulation REGline Tj=25 o C -11.5V≤Vin≤ -24V,Io=40mA-- 90 180 5mA≤Iout≤100mA -- 30 90Load Regulation REGload Tj=25 o C5mA≤Iout≤40mA -- 15 45mVQuiescent Current Iq Iout=0, Tj=25 o C --36-12V≤Vin≤ -24V -- -- 1.5Quiescent Current Change ∆lq5mA≤Iout≤40mA ----0.1mAOutput Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25 o C -- 60 -- uVRipple Rejection Ratio RR f=120Hz, -14V≤Vin≤ -24V 37 57 -- dBVoltage Drop Vdrop Tj=25 o C -- 1.7 -- VPeak Output Current Io peak Tj=25 o C --0.15--A TS79L12 Electrical Characteristics(Vin= -19V, Iout=40mA, 0 o C≤Tj≤125 o C, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)Parameter Symbol TestConditions MinTypMaxUnitTj=25 o C - 11.53- 12 - 12.48Output Voltage Vout -14.5V≤Vin≤ -27V,5mA≤Iout≤100mA - 11.42- 12 - 12.60VLine Regulation REGline Tj=25 o C -14.5V≤Vin≤ -27V,Io=40mA-- 120 240 mV 5mA≤Iout≤100mA -- 40 120Load Regulation REGload Tj=25 o C5mA≤Iout≤40mA -- 20 60Quiescent Current Iq Tj=25 o C, Iout=0 -- 3 6.5-16V≤Vin≤ -27V -- -- 1.5Quiescent Current Change ∆lq5mA≤Iout≤40mA ----0.1mAOutput Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25 o C -- 80 -- uVRipple Rejection Ratio RR f=120Hz, -15V≤Vin≤ -25V 37 42 -- dBVoltage Drop Vdrop Tj=25 o C -- 1.7 -- VPeak Output Current Io peak Tj=25 o C --0.15--A z Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature aspossible, and thermal effects must be taken into account separately.z This specification applies only for DC power dissipation permitted by absolute maximum ratings.TS79L15 Electrical Characteristics(Vin= -23V, Iout=40mA, 0 o C≤Tj≤125 o C, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)Parameter Symbol TestConditions MinTypMaxUnitTj=25 o C - 14.42- 15 - 15.60Output Voltage Vout -17.5V≤Vin≤ -30V,5mA≤Iout≤100mA - 14.28- 15 - 15.75VLine Regulation REGline Tj=25 o C -17.5V≤Vin≤ -30V,Io=40mA-- 150 300 mV 5mA≤Iout≤100mA -- 50 150Load Regulation REGload Tj=25 o C5mA≤Iout≤40mA -- 25 75Quiescent Current Iq Tj=25 o C, Iout=0 -- 3 6.5-20V≤Vin≤ -30V -- -- 1.5Quiescent Current Change ∆lq5mA≤Iout≤40mA ----0.1mAOutput Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25 o C -- 90 -- uVRipple Rejection Ratio RR f=120Hz, -18V≤Vin≤ -28V 34 39 -- dBVoltage Drop Vdrop Tj=25 o C -- 1.7 -- VPeak Output Current Io peak Tj=25 o C --0.15--A TS79L18 Electrical Characteristics(Vin= -27V, Iout=40mA, 0 o C≤Tj≤125 o C, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)Parameter Symbol TestConditions MinTypMaxUnitTj=25 o C - 17.30- 18 - 18.72Output Voltage Vout -21V≤Vin≤- 33V,5mA≤Iout≤100mA - 17.14- 18 - 18.90VLine Regulation REGline Tj=25 o C -21V≤Vin≤ -33V,Io=40mA-- 180 360 mV 5mA≤Iout≤100mA -- 60 180Load Regulation REGload Tj=25 o C5mA≤Iout≤40mA -- 30 90Quiescent Current Iq Tj=25 o C, Iout=0 -- 3 6.5-21V≤Vin≤ -33V -- -- 1.5Quiescent Current Change ∆lq5mA≤Iout≤40mA ----0.1mAOutput Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25 o C --150--uVRipple Rejection Ratio RR f=120Hz, -23V≤Vin≤ -33V 33 48 -- dBVoltage Drop Vdrop Tj=25 o C -- 1.7 -- VPeak Output Current Io peak Tj=25 o C --0.15--A z Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature aspossible, and thermal effects must be taken into account separately.z This specification applies only for DC power dissipation permitted by absolute maximum ratings.TS79L24 Electrical Characteristics(Vin= -33V, Iout=40mA, 0 o C≤Tj≤125 o C, Cin=0.33uF, Cout=0.1uF; unless otherwise specified.)Parameter Symbol TestConditions MinTypMaxUnitTj=25 o C - 23.07- 24 - 24.96Output Voltage Vout -27V≤Vin≤ -38V,5mA≤Iout≤100mA - 22.85- 24 - 25.20VLine Regulation REGline Tj=25 o C -27V≤Vin≤ -38V,Io=40mA-- 200 400 mV 5mA≤Iout≤100mA -- 80 240Load Regulation REGload Tj=25 o C5mA≤Iout≤40mA -- 40 120Quiescent Current Iq Iout=0, Tj=25 o C --47-28V≤Vin≤ -38V -- -- 1.5Quiescent Current Change ∆lq5mA≤Iout≤40mA ----0.1mAOutput Noise Voltage Vn 10Hz≤f≤100KHz, Tj=25 o C --200--uVRipple Rejection Ratio RR f=120Hz, -29V≤Vin≤ -35V 31 45 -- dBVoltage Drop Vdrop Tj=25 o C -- 1.7 -- VPeak Output Current Io peak Tj=25 o C --0.15--A z Pulse testing techniques are used to maintain the junction temperature as close to the ambient temperature aspossible, and thermal effects must be taken into account separately.z This specification applies only for DC power dissipation permitted by absolute maximum ratings.。

LM79L05A中文资料及电路图

LM79L05A中文资料及电路图LM79L05A中文资料介绍Electrical Characteristics 电气特性(MC79L05A/LM79L05A KA79L05)(VI=-10V, IO=40mA, CI=0.33ìF, CO=0.1μF,0℃≤TJ≤+125℃, unless otherwise specified除非另有说明)Parameter 参数Symbol 符号 Conditions 测试条件最小典型最大单位 Output Voltage输出电压VO TJ=+25 ℃ - 4.8 - 5.0 - 5.2 V Line Regulation 线性调整率(Note1) ΔVO TJ=+25 ℃ -7.0V≥VI≥-20V - 15 150 mV -8V≥VI≥-20V - - 100 mV Load Regulation 负载调整率(Note1) ΔVO TJ=+25 ℃ 1.0mA ≤ IO ≤ 100mA - 20 60 mV 1.0mA ≤ IO ≤ 40mA - 10 30 mV Output Voltage输出电压 VO -7.0V≥VI≥-20V, 1.0mA ≤ IO ≤ 40mA - 4.75 - - 5.25 V VI=-10V, 1.0mA ≤ IO ≤ 70mA - 4.75 - - 5.25 V Quiescent Current 静态电流IQ TJ=+ 25 ℃ - 2.0 5.5 mA TJ=+125 ℃ - - 6.0 Quiescent Current Change 静态电流变化 with line ΔIQ -8V≥VI≥-20V - - 1.5 mA with load ΔIQ 1.0mA ≤ IO ≤ 40mA - - 0.1 mA Output Noise Voltage 输出噪声电压VN TA=+25℃,10Hz ≤ f ≤ 100KHz - 30 - μV Ripple Rejection 纹波抑制RR f=120Hz, -8V≥VI≥-18V TJ=+25℃ 41 60 - dB Dropout Voltage 电压差VD TJ=+25℃ - 1.7 - VNote1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken into account separately. Pulse testing with low duty is used.LM79L05A引脚图及功能极限参数：Parameter参数Symbol 符号Value 数值单位Input Voltage输入电压 (for VO = -5V, -8V) VI-30V(for VO = -12V to -18V)-35(forVO = -24V)-40Operating Junction T emperature Range结温工作范围TJ0~ +125℃Storage Temperature Range储存温度范围TSTG-65~ +150℃图1 LM79LXXX引脚排列图LM79L05A电路图介绍:图2 LM79LXXX内部电路图图3 LM79LXXX典型测试电路图图4 正负电压对称输出电路图5 LM78LXXX TO-92封装图片图6 LM78LXXX 8-SOP贴片封装图片图7 LM78LXXX SOT-89贴片封装图片。

L79L12中文资料

Vi = -8 to -20 V B = 10Hz to 100KHz Tj = 25 oC
1.5
mA
50
µV
SVR Supply Voltage Rejection
Io = 40 mA f = 120 Hz Tj = 25 oC
38
46
dB
Vi = -9 to -20 V
Vd Dropout Voltage
L79L05CD L79L05ACD L79L05ABD L79L06CD L79L06ACD L79L06ABD L79L08CD L79L08ACD L79L08ABD L79L09CD L79L09ACD L79L09ABD L79L12CD L79L12ACD L79L12ABD L79L15CD L79L15ACD L79L15ABD
Io = 1 to 40 mA Vi = -7 to -20 V Io = 1 toV Tj = 25 oC Vi = -8 to -20 V Tj = 25 oC Io = 1 to 100 mA Tj = 25 oC Io = 1 to 40 mA Tj = 25 oC Tj = 25 oC Tj = 125 oC
SO-8
Max
20
Max 55 (*)
TO-92 200
SOT-89 12
Unit
oC/W oC/W
TEST CIRCUITS
2/13
元器件交易网
CONNECTION DIAGRAM AND ORDERING NUMBERS (top view)
L79L00
SO-8
ORDERING NUMBERS
1.7
V
4/13
元器件交易网

79L15AC中文资料

PLANETA JSC , 2/13 Fedorovsky Ruchei, Veliky Novgorod, 173004, Russia Ph./Fax: +7–816–2231736 E-mail: planeta@ © August 2001 Rev 1 /~planetaThe Linear IC'sThree-Terminal Low Current Negative Voltage RegulatorsDESCRIPTIONThe 79L00A Series of three terminal negative voltage regulators is available with several fixed output voltages making them useful in a wide range of applications. These regulators are inexpensive, vise-to-use devices suitable for a multitude of applications that require a regulated supply of up to 100 mA. These regulators feature internal current limiting and thermal shutdown making them remarkably rugged. No external components are required with the 79L00A devices in many applications.These devices offer a substantial performance advantage over the traditional zener diode-resistor combination, as output impedance and quiescent current are substantionally reduced.The voltages available allow the 79L00A to be used in logic systems, instrumentation, HiFi, and other solid state electronic equipment.The 79L00A is available in 3-Pin plastic package SOT54 (Z), 3-Pin mini power plastic package SOT89 (F) and the 8-Pin plastic package SO8 (D) offers superior quality and performance at low cost.FEATURESØ High Output CurrentI O = 100 mAØ Fixed Output VoltageV O = -5 V, -6 V, -8 V, -12 V, -15 VØ Complementary Positive Regulators 78L00A Series Ø Available in either ±5% (AC) SelectionDEVICE TYPE / NOMINAL VOLTAGEPackage 5% Output VoltageAccuracy VoltageZ SuffixF Suffix D Suffix 79L05AC -5 79L05ACZ 79L05ACF 79L05ACD 79L06AC-6 79L06ACZ79L06ACF 79L06ACD 79L08AC -8 79L08ACZ 79L08ACF 79L08ACD 79L09AC -9 79L09ACZ 79L09ACF 79L09ACD 79L12AC-12 79L12ACZ 79L12ACF 79L12ACD 79L15AC -1579L15ACZ79L15ACF79L15ACD1 – Common2 – Input3 – Output11 – Common2 – Input3 – Output151 – Output,2 – Input,3 – Input,4 – No Connect,5 – Common,6 – Input,7 – Input,8 – No Connect79L00AC SeriesPh./Fax: +7–816–2231736 PLANETA JSC , 2/13 Fedorovsky Ruchei, Veliky Novgorod, 173004, Russia E-mail: planeta@ /~planeta © August 2001 Rev 12ABSOLUTE MAXIMUM RATINGS (T A = 25 °C)RatingSymbol Value Unit Input VoltageV O = -5 V to -9 V V O = -12 V to -15 V V I-30 -35 VOutput CurrentI O 100mA Maximum Power DissipationCase KT-26 (TO-92) Z Suffix Case KT-47 (SOT-89) F Suffix Case 4303.8-1 (SO-8) D Suffix P D500 350 500 mWJunction TemperatureT JMAX 150 °C Operating Junction Temperature Range T OPR -30 to +85 °C Storage Temperature RangeT STG-40 to +150°CORDERING INFORMATIONDevice MarkingPackageQuantityPacking Style79LXXACZ* 79LXXACZ* SOT-54 1 Kpcs / plastic bags / carton boxIn bulk 79LXXACF*9LXX*SOT-89 5 Kpcs / plastic bags / carton box In bulk 79LXXACF-T1* 9LXX*SOT-891 Kpcs / Reel Embossed tape 12-mm wide 7'' dia.Pin 2 (Common) towards the windung. Perforation on the right.79LXXACD* 79LXXACD* SO-85 Kpcs / plastic bags / carton box In bulk 79LXXACD-R1* 79LXXACD* SO-8500 pcs / Reel Embossed tape 12-mm wide 7'' dia.Pin 1 (Output) face to perforation side of the tape.79LXXACD-R2* 79LXXACD* SO-82.5 Kpcs / Reel Embossed tape 12-mm wide 13'' dia.Pin 1 (Output) face to perforation side of the tape.Note 1:XX indicates nominal voltage*Available in -5, -6, -8, -9, -12 and -15 V devices.79L00AC SeriesPLANETA JSC , 2/13 Fedorovsky Ruchei, Veliky Novgorod, 173004, Russia Ph./Fax: +7–816–2231736 E-mail: planeta@ © August 2001 Rev 1 /~planeta379L05AC ELECTRICAL CHARACTERISTICS(V I = -10 V, I O = 40 mA, C I = 0.33 µF, C O = 0.1 µF, T A = 25 °C unless otherwise noted)CharacteristicSymbol Min Typ Max Unit Output Voltage V O -4.8 -5.0 -5.2 V Output Voltage,-7.0V < V I < -20.0V, 1mA < I O < 40mA V O -4.75 – -5.25 V Line Regulation, -7.0V < V I < -20.0V Reg line – – 150mV Load Regulation,1mA < I O < 100mA 1mA < I O < 40mA Reg load – – – – 60 30 mVInput Bias Current I IB – – 6 mA Input Bias Current,-8.0V < V I < -20.0V, 1mA < I O < 40mA ∆I IB – – 1.5 mA Ripple Rejection,-8.0V < V I < -18.0V, I O =40mA, f=120Hz RR 41 – – dB Dropout VoltageV I – V O1.7–V79L06AC ELECTRICAL CHARACTERISTICS(V I = -12 V, I O = 40 mA, C I = 0.33 µF, C O = 0.1 µF, T A = 25 °C unless otherwise noted)CharacteristicSymbol Min Typ Max Unit Output Voltage V O -5.75 -6.0 -6.25 V Output Voltage,-8.5V < V I < -20.0V, 1mA < I O < 40mA V O -5.7 – -6.3 V Line Regulation, -8.5V < V I < -20.0V Reg line – – 175mV Load Regulation,1mA < I O < 100mA 1mA < I O < 40mA Reg load – – – – 80 40 mVInput Bias Current I IB – – 6 mA Input Bias Current,-9.0V < V I < -20.0V, 1mA < I O < 40mA ∆I IB – – 1.5 mA Ripple Rejection,-10.0V < V I < -20.0V, I O =40mA, f=120Hz RR 40 – – dB Dropout VoltageV I – V O1.7–V79L00AC SeriesPh./Fax: +7–816–2231736 PLANETA JSC , 2/13 Fedorovsky Ruchei, Veliky Novgorod, 173004, Russia E-mail: planeta@ /~planeta © August 2001 Rev 1479L08AC ELECTRICAL CHARACTERISTICS(V I = -14 V, I O = 40 mA, C I = 0.33 µF, C O = 0.1 µF, T A = 25 °C unless otherwise noted)CharacteristicSymbol Min Typ Max Unit Output Voltage V O -7.7 -8.0 -8.3 V Output Voltage,-10.5V < V I < -23.0V, 1mA < I O < 40mA V O -7.6 – -8.4 V Line Regulation, -10.5V < V I < -23.0V Reg line – – 175mV Load Regulation,1mA < I O < 100mA 1mA < I O < 40mA Reg load – – – – 80 40 mVInput Bias Current I IB – – 6 mA Input Bias Current,-11.0V < V I < -23.0V, 1mA < I O < 40mA ∆I IB – – 1.5 mA Ripple Rejection,-13.0V < V I < -23.0V, I O =40mA, f=120Hz RR 37 – – dB Dropout VoltageV I – V O1.7–V79L09AC ELECTRICAL CHARACTERISTICS(V I = -16 V, I O = 40 mA, C I = 0.33 µF, C O = 0.1 µF, T A = 25 °C unless otherwise noted)CharacteristicSymbol Min Typ Max Unit Output Voltage V O -8.6 -9.0 -9.4 V Output Voltage,-12.0V < V I < -24.0V, 1mA < I O < 40mA V O -8.55 – -9.45 V Line Regulation, -12.0V < V I < -24.0V Reg line – – 175mV Load Regulation,1mA < I O < 100mA 1mA < I O < 40mA Reg load – – – – 90 40 mVInput Bias Current I IB – – 6 mA Input Bias Current,-13.0V < V I < -24.0V, 1mA < I O < 40mA ∆I IB – – 1.5 mA Ripple Rejection,-15.0V < V I < -25.0V, I O =40mA, f=120Hz RR 37 – – dB Dropout VoltageV I – V O1.7–V79L00AC SeriesPLANETA JSC , 2/13 Fedorovsky Ruchei, Veliky Novgorod, 173004, Russia Ph./Fax: +7–816–2231736 E-mail: planeta@ © August 2001 Rev 1 /~planeta579L12AC ELECTRICAL CHARACTERISTICS(V I = -19 V, I O = 40 mA, C I = 0.33 µF, C O = 0.1 µF, T A = 25 °C unless otherwise noted)CharacteristicSymbol Min Typ Max Unit Output Voltage V O -11.5 -12.0-12.5 V Output Voltage,-14.0V < V I < -27.0V, 1mA < I O < 40mA V O -11.4– -12.6 V Line Regulation, -14.5V < V I < -27.0V Reg line – – 250mV Load Regulation,1mA < I O < 100mA 1mA < I O < 40mA Reg load – – – – 100 50 mVInput Bias Current I IB – – 6.5 mA Input Bias Current,-16.0V < V I < -27.0V, 1mA < I O < 40mA ∆I IB – – 1.5 mA Ripple Rejection,-15.0V < V I < -25.0V, I O =40mA, f=120Hz RR 37 – – dB Dropout VoltageV I – V O1.7–V79L15AC ELECTRICAL CHARACTERISTICS(V I = -23 V, I O = 40 mA, C I = 0.33 µF, C O = 0.1 µF, T A = 25 °C unless otherwise noted)CharacteristicSymbol Min Typ Max Unit Output Voltage V O -14.4 -15.0-15.6 V Output Voltage,-17.5V < V I < -30.0V, 1mA < I O < 40mA V O -14.25– -15.75 V Line Regulation, -17.5V < V I < -30.0V Reg line – – 300mV Load Regulation,1mA < I O < 100mA 1mA < I O < 40mA Reg load – – – – 150 75 mVInput Bias Current I IB – – 6.5 mA Input Bias Current,-19.0V < V I < -30.0V, 1mA < I O < 40mA ∆I IB – – 1.5 mA Ripple Rejection,-18.5V < V I < -28.5V, I O =40mA, f=120Hz RR 34 – – dB Dropout VoltageV I – V O1.7–V79L00AC SeriesPh./Fax: +7–816–2231736 PLANETA JSC , 2/13 Fedorovsky Ruchei, Veliky Novgorod, 173004, RussiaE-mail: planeta@ /~planeta © August 2001 Rev 16PACKAGE DIMENSIONS of 79L00ACZ in mmPLASTIC CASE KT-26PACKAGE DIMENSIONS of 79L00ACF in mm元器件交元器件交易网79L00AC Series PACKAGE DIMENSIONS of 79L00ACD in mmPLASTIC CASE 4303.8-1PLANETA JSC, 2/13 Fedorovsky Ruchei, Veliky Novgorod, 173004, Russia Ph./Fax: +7–816–2231736E-mail: planeta@ © August 2001 Rev 1 /~planeta7。

AN79L09资料

Note 1) The specified condition Tj = 25°C means that the test should be carried out within so short a test time (within 10ms) that the characteristic value drift due to the chip junction temperature rise can be ignored. Note 2) Unless otherwise specified, VI = −10V, IO = 40mA, CI = 2µF, CO = 1µF, Tj = 0 to 125°C (AN79L05) and Tj = 0 to 100°C (AN79L05M)
R1 + Voltage Reference
Error Amp.
I Block Diagram (AN79Lxx series)
−
R2 1 Q1 Output (3)
Starter
Thermal Protection
Current Limiter RSC
Pass Tr.
3
Input (2)
Note) The number in ( ) shows the pin number for the AN79LxxM series.
I Electrical Characteristics at Ta = 25°C
• AN79L04 (−4V type)
Parameter Output voltage Output voltage tolerance Line regulation Load regulation Bias current Bias current fluctuation to input Bias current fluctuation to load Output noise voltage Ripple rejection ratio Minimum input/output voltage difference Output short-circuit current Output voltage temperature coefficient Symbol VO VO REGIN REGL IBias ∆IBias(IN) ∆IBias(L) Vno RR VDIF(min) IO(Short) ∆VO/Ta Tj = 25°C VI = −7 to −19V, IO = 1 to 70mA VI = −6 to −20V, Tj = 25°C VI = −7 to −17V, Tj = 25°C IO = 1 to 100mA, Tj = 25°C IO = 1 to 40mA, Tj = 25°C Tj = 25°C VI = −7 to −19V, Tj = 25°C IO = 1 to 40mA, Tj = 25°C f = 10Hz to 100kHz, Ta = 25°C VI = −7 to −17V, f = 120Hz, Ta = 25°C Tj = 25°C VI = −35V, Tj = 25°C IO = 5mA 55 0.8 200 − 0.4 38 10 4.5 3 Conditions Min −3.84 −3.8 Typ −4 Max −4.16 −4.2 80 40 60 30 5 0.5 0.1 Unit V V mV mV mV mV mA mA mA µV dB V mA mV/°C

MC79L05中文资料

PACKAGING INFORMATIONOrderable Device Status(1)PackageType PackageDrawingPins PackageQtyEco Plan(2)Lead/Ball Finish MSL Peak Temp(3)MC79L05ACD ACTIVE SOIC D875Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMMC79L05ACDE4ACTIVE SOIC D875Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMMC79L05ACDG4ACTIVE SOIC D875Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMMC79L05ACDR ACTIVE SOIC D82500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMMC79L05ACDRE4ACTIVE SOIC D82500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMMC79L05ACDRG4ACTIVE SOIC D82500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIM MC79L05ACLP ACTIVE TO-92LP31000TBD CU SNPB Level-NC-NC-NC MC79L05ACLPR ACTIVE TO-92LP32000TBD CU SNPB Level-NC-NC-NC MC79L05AILP OBSOLETE TO-92LP3TBD Call TI Call TIMC79L05CD OBSOLETE SOIC D8TBD Call TI Call TIMC79L05CDR OBSOLETE SOIC D8TBD Call TI Call TIMC79L05CLP OBSOLETE TO-92LP3TBD Call TI Call TIMC79L12ACD ACTIVE SOIC D875Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMMC79L12ACDE4ACTIVE SOIC D875Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMMC79L12ACDR ACTIVE SOIC D82500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMMC79L12ACDRE4ACTIVE SOIC D82500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIM MC79L12ACLP ACTIVE TO-92LP31000TBD CU SNPB Level-NC-NC-NC MC79L12ACLPR ACTIVE TO-92LP32000TBD CU SNPB Level-NC-NC-NCMC79L12CD OBSOLETE SOIC D8TBD Call TI Call TIMC79L12CLP ACTIVE TO-92LP31000TBD CU SNPB Level-NC-NC-NC MC79L15ACD OBSOLETE SOIC D8TBD Call TI Call TIMC79L15ACLP ACTIVE TO-92LP31000TBD CU SNPB Level-NC-NC-NC MC79L15ACLPM ACTIVE TO-92LP32000TBD CU SNPB Level-NC-NC-NC MC79L15ACLPR ACTIVE TO-92LP32000TBD CU SNPB Level-NC-NC-NCMC79L15CD ACTIVE SOIC D875Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMMC79L15CDE4ACTIVE SOIC D875Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIM MC79L15CLP OBSOLETE TO-92LP3TBD Call TI Call TI(1)The marketing status values are defined as follows:ACTIVE:Product device recommended for new designs.LIFEBUY:TI has announced that the device will be discontinued,and a lifetime-buy period is in effect.NRND:Not recommended for new designs.Device is in production to support existing customers,but TI does not recommend using this part in a new design.PREVIEW:Device has been announced but is not in production.Samples may or may not be available.OBSOLETE:TI has discontinued the production of the device.(2)Eco Plan-The planned eco-friendly classification:Pb-Free(RoHS)or Green(RoHS&no Sb/Br)-please check /productcontent for the latest availability information and additional product content details.TBD:The Pb-Free/Green conversion plan has not been defined.Pb-Free(RoHS):TI's terms"Lead-Free"or"Pb-Free"mean semiconductor products that are compatible with the current RoHS requirements for all6substances,including the requirement that lead not exceed0.1%by weight in homogeneous materials.Where designed to be soldered at high temperatures,TI Pb-Free products are suitable for use in specified lead-free processes.Green(RoHS&no Sb/Br):TI defines"Green"to mean Pb-Free(RoHS compatible),and free of Bromine(Br)and Antimony(Sb)based flame retardants(Br or Sb do not exceed0.1%by weight in homogeneous material)(3)MSL,Peak Temp.--The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications,and peak solder temperature.Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.TI bases its knowledge and belief on information provided by third parties,and makes no representation or warranty as to the accuracy of such information.Efforts are underway to better integrate information from third parties.TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary,and thus CAS numbers and other limited information may not be available for release.In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s)at issue in this document sold by TI to Customer on an annual basis.元器件交易网IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,enhancements, improvements, and other changes to its products and services at any time and to discontinueany product or service without notice. Customers should obtain the latest relevant information before placingorders and should verify that such information is current and complete. All products are sold subject to TI’s termsand conditions of sale supplied at the time of order acknowledgment.TI warrants performance of its hardware products to the specifications applicable at the time of sale inaccordance with TI’s standard warranty. T esting and other quality control techniques are used to the extent TIdeems necessary to support this warranty. Except where mandated by government requirements, testing of allparameters of each product is not necessarily performed.TI assumes no liability for applications assistance or customer product design. Customers are responsible fortheir products and applications using TI components. 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LM7905中文资料

1
元器件交易网
LM79XX
PARAMETER
Input voltage Thermal resistance junction-air Thermal resistance junction-cases Operating Temperature Storage Temperature
54
Contek7906 ELECTRICAL CHARACTERISTICS
(Refer to test circuits, 0<Tj<125 C,Io=500mA,Vi=-11V,Ci=2.2uF,Co=1uF,unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
54
-0.5 130 60 2 300 2.2
Contek Microelectronics Co.,Ltd.
CONTEK
E-mail:sales@
2
元器件交易网
LM79XX
LINEAR INTEGRATED CIRCUIT
Output voltage Line regulation Load regulation Quiescent current Quiescent current change Output voltage drift Output noise voltage Ripple rejection Dropout voltage Short circuit current peak current Vo DVo DVo IQ DIQ DVo/DT VN RR Vo Isc Ipk Tj=25 C 5.0mA<Io<1.0A,Po<15W Vi=-8V to -21V Tj=25 C,Vi=-8V to -25V Tj=25 C,Vi=-9V to -13V Tj=25 C,Io=5.0mA to 1.5A Tj=25 C,Io=250mA to 750mA Tj=25 C Io=5mA to 1.0A Vi=-8V to -25V Io=5mA f=10hz to 100kHz,Ta=25 C f=120Hz, Vi=-9V to -19V Io=1.0A,Tj=25 C Vi=-35V,Ta=25 C Tj=25 C -5.75 -5.7 -6.00 -6.0 10 5 10 3 3 6-.25 -6.3 120 60 120 60 6 0.5 1.3 V V mV mV mV mV mA mA mA mV/ C mV dB V mA A

Am79C985JC中文资料

Publication# 20651 Rev: B Amendment/0 Issue Date: January 1998
.
2
DI± CI± FIFO Preamble Phase Lock Loop FIFO CONTROL Jam Sequence TX MUX DO± AUI Port RX MUX Manchester Decoder RXD± TXD± Manchester Encoder TP Port 0 RXD± TXD± Partitioning Link Test RST Reset LED Interface TP Port 3 eIMR+ Chip Control Expansion Port SELI[1:0] SELO ACK COL DAT JAM LDA[4:0], LDB[4:0] LDGA, LDGB LDC[2:0] ACT[7:0] CLK Clock Gen Timers Test and Management Port STR SI SI_D SO SCLK AMODE CRS_I CRS
This document contains information on a product under development at Advanced Micro Devices. The information is intended to help you evaluate this product. AMD reserves the right to change or discontinue work on this proposed product without notice.
ALTERNATE PACKAGING OPTION \W = Trimmed and formed in a tray

MC79M15中文资料

MC79M05 MC79M08 –5.0 V –8.0 V MC79M12 MC79M15 –12 V –15 V Pin 1. Ground 2. Input 3. Output Package DPAK TJ = – 40° to +125°C 4.0% 4 0% TJ = 0° to +125°C Plastic Power DPAK Plastic Power
Characteristic Output Voltage (TJ = 25°C) Line Regulation, TJ = 25°C (Note 1) –7.0 Vdc ≥ VI ≥ –25 Vdc –8.0 Vdc ≥ VI ≥ –18 Vdc Load Regulation, TJ = 25°C (Note 1) 5.0 mA ≤ IO ≤ 500 mA Output Voltage –7.0 Vdc ≥ VI ≥ –25 Vdc, 5.0 mA ≤ IO ≤ 350 mA Input Bias Current (TJ = 25°C) Input Bias Current Change –8.0 Vdc ≥ VI ≥ –25 Vdc, IO = 350 mA 5.0 mA ≤ IO ≤ 350 mA, VI = –10 V Output Noise Voltage, TA = 25°C, 10 Hz ≤ f ≤ 100 kHz Ripple Rejection (f = 120 Hz) Dropout Voltage IO = 500 mA, TJ = 25°C Average Temperature Coefficient of Output Voltage IO = 5.0 mA, 0°C ≤ TJ ≤ 125°C Symbol VO Regline – – Regload – VO –7.6 IIB ∆IIB – – Vn RR VI–VO – ∆VO/∆T – 0.4 – 1.1 – mV/°C – 54 – – 60 63 0.4 0.4 – – µV dB Vdc – –8.0 – –8.4 8.0 mA mA 30 100 Vdc 5.0 3.0 80 50 mV Min –7.7 Typ –8.0 Max –8.3 Unit Vdc mV

L79L05资料

-4.5 -4.5
- 5. 5
V
- 5. 5
V
2 00
mV
1 50
mV

60
mV
30
mV
6
mA
5.5
mA
∆Id Quiescent Current Change Io = 1 to 40 mA
0.2
mA
∆Id eN SVR
Quiescent Current Change Output Noise Voltage Supply Voltage Rejection
REQUIRED s AVAILABLEIN EITHER ± 5% (AC) OR ± 10%
(C) SELECTION
DESCRIPTION The L79L00 series of three-terminal positive regulators employ internal current limiting and thermal shutdown, making them essentially indestructible. If adequate heatsink is provided, they can deliver up to 100 mA output current. They are intended as fixed voltage regulators in a wide range of applications including local or on-card regulation for elimination of noise and distribution problems associated with single-point regulation. In addition, they can be used with power pass elements to make high-current voltage regulators. The L79L00 series used as Zener diode/resistor combination replacement, offers an effective