ADM1185: Quad Voltage Monitor and Sequencer

The ADM1185 is an integrated four channel voltage monitoring device. A 2.7V to 5.5V power supply is required on the VCC pin to power the device.

Four precision comparators monitor four voltage rails on the VIN1-VIN4 pins. All comparators have a 0.6V reference with a worst-case accuracy of 0.8%. Resistor networks external to the VIN1-VIN4 pins set the trip points

There are four open-drain outputs on the device. The device can be configured so that the outputs turn on numerous regulators or DC-DC converters in a required sequence. The last output can be used as a Power Good signal. Once the power up sequence is complete a fault on the voltage monitored by the VIN1 pin results in the deassertion of all outputs while a fault on any other input results in the deassertion of the Power Good output

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