ADM1186-1ARQZ

The ADM1186-1ARQZ is an integrated, four-channel voltage monitoring and sequencing device manufactured by Analog Devices. It requires a 2.7 V to 5.5 V power supply on the VCC pin. The device monitors four voltage rails using precision comparators with a worst-case accuracy of 0.8%, sharing a 0.6 V reference. Undervoltage trip points are set using external resistor dividers. The ADM1186-1 supports up and down supply sequencing, controlled by UP and DOWN pins, and features capacitor-programmable sequence time delays and a timeout delay with 5% accuracy at 25°C.

This device includes four open-drain enable outputs (OUT1 to OUT4) for controlling power supplies and an open-drain power-good output (PWRGD) that indicates when all monitored VINx inputs are above their undervoltage thresholds. The ADM1186-1 also has an open-drain sequence complete pin and a bidirectional open-drain fault pin. It is supplied in a 20-QSOP package suitable for surface mounting.

Applications for the ADM1186-1 include monitor and alarm functions, up and down power supply sequencing, and use in telecommunication, data communication equipment, PCs, servers, and notebook PCs.