ADM802LARNZ-REEL

监控电路 5V CMOS UP I.C.

Product Details

The ADM690A/ADM692A/ADM802L/M/ADM805L/M family of supervisory circuits offers complete single chip solutions for power supply monitoring and battery control functions in microprocessor systems. These functions include mP reset, backup battery switchover, watchdog timer, and power failure warning.

The ADM690A/ADM692A/ADM802L/M/ADM805L/M are available in 8-pin packages and provide:

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Power-on reset output during power-up, power-down and brownout conditions. The RESET output remains operational with VCC as low as 1 V.

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Battery backup switching for CMOS RAM, CMOS microprocessor or other low power devices.

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A reset pulse if the optional watchdog timer has not been toggled within 1.6 seconds.

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A 1.25 V threshold detector for power fail warning, low battery detection, or to monitor a power supply other than +5 V.

On the ADM690A/ADM802L/ADM805L the reset voltage threshold is 4.65 V. On the ADM692A/ADM802M/ ADM805M, the reset voltage threshold is 4.40 V.

The ADM802L/ADM802M guarantee power fail accuracies to ±2%.

### Features and Benefits

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Precision Supply Voltage Monitor

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4.65 V ADM690A/ADM802L/ADM805L

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4.40 V ADM692A/ADM802M/ADM805M

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Reset Assertion Down to 1 V VCC

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Reset Timeout—200 ms

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Watchdog Timer—1.6 s

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100 mA Quiescent Supply Current

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Automatic Battery Backup Power Switching

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Voltage Monitor for Power Fail

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±2% Power Fail Accuracy on ADM802L/M

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Space-Saving MicroSOIC Package ADM690A