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.
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| Number of supplies monitored | 2 |
| Threshold voltage 1 (typ) (V) | 2.32, 3.08, 4.63 |
| Features | Manual reset capable, PFI/PFO, Timeout watchdog, Undervoltage monitor only, Watchdog timer |
| Reset threshold accuracy (%) | 0.5 |
| Iq (typ) (mA) | 0.028 |
| Output driver type/reset output | Active-low, Open-drain, Push-Pull |
| Time delay (ms) | 28, 200 |
| Supply voltage (min) (V) | 1 |
| Supply voltage (max) (V) | 5.5 |
| Rating | Catalog |
| Watchdog timer WDI (s) | 0.1, 1.6 |
| Operating temperature range (°C) | -40 to 85 |
| VSSOP (DGS) | 10 | 14.7 mm² 3 x 4.9 |
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