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LM3708XQBP-308 |LM3708XQBP308NSN/a500avaiMicroprocessor Supervisory Circuits with Low Line Output, Manual Reset and Watchdog Timer
LM3708XQBPX-308 |LM3708XQBPX308NSN/a988avaiMicroprocessor Supervisory Circuits with Low Line Output, Manual Reset and Watchdog Timer


LM3708XQBPX-308 ,Microprocessor Supervisory Circuits with Low Line Output, Manual Reset and Watchdog TimerPin DescriptionsBump No. Name FunctionA1 MR Manual-Reset input. When MR is less than V (Manual Rese ..
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LM3710XKMM-463/NOPB ,Reset IC / Voltage Supervisor with Power Fail Input, Low Line Output, Manual Reset & Watch Dog Timer 10-VSSOP features include the following:• RESET (LM3710) or RESET (LM3711) OutputsReset: Reset is asserted d ..
LM3710XQMM-308 ,Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output, Manual Reset and Watchdog TimerPin DescriptionsPin No.Name FunctionmicroMSOPSMDA1 2 MR Manual-Reset input. When MR is less than V ..
LM3710YQMM-232 ,Microprocessor Supervisory Circuits with Power Fail Input, Low Line Output, Manual Reset and Watchdog TimerPin DescriptionsPin No.Name FunctionmicroMSOPSMDA1 2 MR Manual-Reset input. When MR is less than V ..
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LMV431AIM5X/NOPB ,Low-Voltage (1.24V) Adjustable Precision Shunt Regulators 5-SOT-23 -40 to 85Sample & Support &Product Tools &TechnicalCommunityBuyFolder Documents SoftwareLMV431,LMV431A,LMV43 ..
LMV431AIMF ,Low-Voltage (1.24V) Adjustable Precision Shunt RegulatorsFeaturesn Low Voltage Operation/Wide Adjust Range (1.24V/30V)The LMV431, LMV431A and LMV431B are pr ..
LMV431AIMF/NOPB ,Low-Voltage (1.24V) Adjustable Precision Shunt Regulators 3-SOT-23 -40 to 85Electrical Characteristics....... 85 Revision HistoryNOTE: Page numbers for previous revisions may ..
LMV431AIMFX ,Low-Voltage (1.24V) Adjustable Precision Shunt RegulatorsLMV431/LMV431A/LMV431B Low-Voltage (1.24V) Adjustable Precision Shunt RegulatorsAugust 2003LMV431/L ..
LMV431AIMFX NOPB ,Low-Voltage (1.24V) Adjustable Precision Shunt Regulators 3-SOT-23 -40 to 85Features 3 DescriptionThe LMV431, LMV431A and LMV431B are precision1• Low-Voltage Operation/Wide Ad ..


LM3708XQBP-308-LM3708XQBPX-308
Microprocessor Supervisory Circuits with Low Line Output, Manual Reset and Watchdog Timer
LM3708/LM3709
Microprocessor Supervisory Circuits with Low Line
Output, Manual Reset and Watchdog Timer
General Description

The LM3708/LM3709 seriesof microprocessor supervisory
circuits providethe maximum flexibilityfor monitoring power
supplies and battery controlled functionsin systems without
backup batteries. The LM3708/LM3709 series are availablea 9-bump micro SMD package.
Built-in features includethe following:
Reset: Resetis asserted during power-up, power-down, and
brownout conditions. RESETis guaranteed downto VCCof
1.0V.
Manual Reset Input:An input that asserts reset when pulled
low.
Low Line Output: This early power failure warning indicator
goes low whenthe supply voltage dropstoa value whichis higher than the reset threshold voltage.
Watchdog Timer: The WDI (Watchdog Input) monitors oneof
the µP’s output linesfor activity.Ifno output transition occurs
during the watchdog timeout period, resetis activated.
Features
Standard Reset Threshold voltage: 3.08V Custom Reset Threshold voltages: For other voltages
between 2.2V and 5.0Vin 10mV increments, contact
National Semiconductor Corp. No external components required Manual-Reset input RESET (LM3708)or RESET (LM3709) outputs Precision supply voltage monitor Factory programmable Reset and Watchdog Timeout
Delays Availablein micro SMD packagefor minimum footprint ±0.5% Reset threshold accuracyat room temperature ±2% Reset threshold accuracy over temperature
extremes Reset assertion downto1V VCC (RESET option only)28µA VCC supply current
Applications
Embedded Controllers and Processors Intelligent Instruments Automotive Systems CriticalµP Power Monitoring
Typical Application

June 2002
LM3708/LM3709
Microprocessor
Supervisory
Circuits
with
Low
Line
Output,
Manual
Reset
atchdog
imer
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