General Description

The ICL7665 warns microprocessors (mPs) of overvoltage

and undervoltage conditions. It draws a typical

operating current of only 3μA. The trip points and hysteresis

of the two voltage detectors are individually programmed

via external resistors to any voltage greater

than 1.3V. The ICL7665 will operate from any supply

voltage in the 1.6V to 16V range, while monitoring voltages

from 1.3V to several hundred volts. The Maxim

ICL7665A is an improved version with a 2%-accurate

VSET1 threshold and guaranteed performance over

temperature.

The 3μA quiescent current of the ICL7665 makes it

ideal for voltage monitoring in battery-powered systems.

In both battery- and line-powered systems, the

unique combination of a reference, two comparators,

and hysteresis outputs reduces the size and component

count of many circuits.

Features

© μP Over/Undervoltage Warning

© Improved Second Source

© Dual Comparator with Precision Internal Reference

© 3μA Operating Current

© 2% Threshold Accuracy (ICL7665A)

© 1.6V to 16V Supply Voltage Range

© On-Board Hysteresis Outputs

© Externally Programmable Trip Points

© Monolithic, Low-Power CMOS Design