GENERAL DESCRIPTION

The ADCMP671 voltage monitor consists of two low power, high accuracy comparators and reference circuits. It operates on a supply voltage from 1.7 V to 5.5 V and draws 17 μA maximum, making it suitable for low power system monitoring and portable applications. The part is designed to monitor and report supply undervoltage and overvoltage fault. The low input bias current and voltage reference allows resistor adjustable UV and OV threshold down to 400 mV.

FEATURES

Window monitoring with minimum processor I/O

Individually monitoring N rails with only N + 1 processor I/O

400 mV, ± 0.275 threshold at VDD = 3.3 V, 25°C

Supply range: 1.7 V to 5.5 V

Low quiescent current: 17 μA maximum at 125°C

Input range includes ground

Internal hysteresis: 9.2 mV typical

Low input bias current: 2.5 nA maximum

Open-drain outputs

Power good indication output

Designated over voltage indication output

Low profile (1 mm), 6-lead TSOT package

APPLICATIONS

Supply voltage monitoring

Li-Ion monitoring

Portable applications

Handheld instruments