The LM3710/LM3711 series of microprocessor supervisory circuits provide the maximum flexibility for monitoring power supplies and battery controlled functions in systems without backup batteries. The LM3710/LM3711 series are available in VSSOP-10 and 9-bump DSBGA packages.
Built-in features include the following:
Reset: Reset is asserted during power-up, power-down, and brownout conditions. RESET is ensured 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.
Low Line Output: This early power failure warning indicator goes low when the supply voltage drops to a value which is 2% higher than the reset threshold voltage.
Watchdog Timer: The WDI (Watchdog Input) monitors one of the µP"s output lines for activity. If no output transition occurs during the watchdog timeout period, reset is activated.
Standard Reset Threshold Voltage: 3.08V
Custom Reset Threshold Voltages: For other voltages between 2.2V and 5.0V in 10mV increments, contact TI
No External Components Required
Manual-Reset Input
RESET (LM3710) or RESET (LM3711) Outputs
Precision Supply Voltage Monitor
Factory Programmable Reset and Watchdog Timeout Delays
Separate Power Fail Comparator
Available in DSBGA 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 µA VCC Supply Current
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