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