QuickView - ICL7665 µP Voltage Monitor with Dual Over/Undervoltage Detection

Description

FULL DATA SHEET (PDF, 128kB)
Download	E-Mail

The ICL7665 warns microprocessors (µPs) 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 V_SET1 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.

Key Features

Applications/Uses

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

	µP Voltage Monitoring
	Battery-Backup Switching
	High/Low Temperature, Pressure, Voltage Alarms
	Low-Battery Detection
	Over/Undervoltage Protection
	Power Supply Fault Monitoring
	Power-Fail and Brownout Detection

Key Specifications: Supervisors (2 Monitored Voltages)

Part Number

Interface

Reset Thresh.
(V)

Reset Out

t_RESET

Watchdog Feature

Supervisor Features

Reset Thresh. Accur.
(%)

I_CC
(µA)

Price

Active Low

Active High

min

@ +25°C

max

See Notes

ICL7665

R/C Adjustable

1.2 to 1.8

1.8 to 2.5

2.5 to 3.3

3.3 to 5.5

Open Drain

<1ms

No Watchdog

Adjustable Reset Input

Overvoltage/Window Monitor

$2.23 @1k

See All Supervisors (2 Monitored Voltages) (84)

Diagram

Typical Operating Circuit

Didn't Find What You Need?

Next Day Product Selection Assistance from Applications Engineers
Parametric Search
Applications Help

QuickView Technical Documents Ordering Info More Information

Description
Key Features
Applications/Uses
Key Specifications
Diagram

Data Sheet
Application Notes
Design Guides
Engineering Journals
Reliability Reports
Software/Models
Evaluation Kits

Price and Availability
Samples
Buy Online
Package Information
Lead-Free Information

Related Products
Notes and Comments
Evaluation Kits

Document Ref.: 19-0001; Rev 2; 1997-08-01
This page last modified: 2007-05-31