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Part Number: LM3712
Description: The LM3712/LM3713 series of microprocessor supervisory circuits provide the maximum flexibility for mo...
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LM3712
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DataSheet
General Description
LM3712 General Description
The LM3712/LM3713 series of microprocessor supervisory circuits provide the maximum flexibility for monitoring power supplies and battery controlled functions in systems without backup batteries. The LM3712/LM3713 series are available in a 9-bump micro SMD package. Built-in features include the following:
Reset: Reset is asserted during power-up, power-down, and brownout conditions. RESET is guaranteed down to VCC of 1.0V. Manual Reset Input: An input that asserts reset when pulled low.
Power-Fail Input: A 1.225V threshold detector for power fail warning, or to monitor a power supply other than VCC. Watchdog Timer: The WDI (Watchdog Input) monitors one of the P's output lines for activity. If no output transition occurs
during the watchdog timeout period, the watchdog output
(WDO) pulls low.
LM3712 Maximum Ratings
Supply Voltage (VCC) ....−0.3V to 6.0V
All Other Inputs .. −0.3V to VCC + 0.3V
ESD Ratings (Note 2)
Human Body Model.......... 1.5kV
Machine Model..............150V
Power Dissipation ......... (Note 3)
All Other Inputs .. −0.3V to VCC + 0.3V
ESD Ratings (Note 2)
Human Body Model.......... 1.5kV
Machine Model..............150V
Power Dissipation ......... (Note 3)
LM3712 Features
` Standard Reset Threshold voltage: 3.08V
` Custom Reset Threshold voltages: For other voltages between 2.2V and 5.0V in 10mV increments, contact National Semiconductor Corp.
` No external components required
` Manual-Reset input
` RESET (LM3712) or RESET (LM3713) outputs
` Precision supply voltage monitor
` Factory programmable Reset and Watchdog Timeout Delays
` Separate Watchdog output
` Separate Power Fail comparator
` Available in micro SMD package for minimum footprint
` ±0.5% Reset threshold accuracy at room temperature
` ±2% Reset threshold accuracy over temperature extremes
` Reset assertion down to 1V VCC (RESET option only)
` 28 A VCC supply current
` Custom Reset Threshold voltages: For other voltages between 2.2V and 5.0V in 10mV increments, contact National Semiconductor Corp.
` No external components required
` Manual-Reset input
` RESET (LM3712) or RESET (LM3713) outputs
` Precision supply voltage monitor
` Factory programmable Reset and Watchdog Timeout Delays
` Separate Watchdog output
` Separate Power Fail comparator
` Available in micro SMD package for minimum footprint
` ±0.5% Reset threshold accuracy at room temperature
` ±2% Reset threshold accuracy over temperature extremes
` Reset assertion down to 1V VCC (RESET option only)
` 28 A VCC supply current
LM3712 Typical Application
` Embedded Controllers and Processors
` Intelligent Instruments
` Automotive Systems
` Critical P Power Monitoring
` Intelligent Instruments
` Automotive Systems
` Critical P Power Monitoring
LM3712
PDF/DataSheet Download
- Datasheet: LM3712
- File Size: 208904 KB
- Manufacturer: NATIONAL
- Click here to Download
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