CAT823 datasheet, PDF - EEWORLD Datasheet

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CAT823: Description1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5; Categoryaccessories; File Size138KB，12 Pages; ManufacturerON Semiconductor; Websitehttp://www.onsemi.cn

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CAT823 Overview

1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5

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CAT823, CAT824, CAT825

System Supervisory Voltage

Reset with Watchdog and

Manual Reset

Description

The CAT823, CAT824, and CAT825 provide basic reset and

monitoring functions for the electronic systems. Each device monitors the

system voltage and maintains a reset output until that voltage reaches

the device’s specified trip value and then maintains the reset output

active condition until the device’s internal timer, after a minimum

timer of 140 ms; to allow the systems power supply to stabilize.

The CAT823 and CAT824 also have a watchdog input which can be

used to monitor a system signal and cause a reset to be issued if the

signal fails to change state prior to a timeout condition.

The CAT823 and CAT825 also provide a manual reset input which

can be used to initiate reset if pulled low. This input can be directly

attached to a push−button or a processor signal.

Features

http://onsemi.com

SC−70

SD SUFFIX

CASE 419AC

TSOT−23

TD SUFFIX

CASE 419AE

PIN CONNECTIONS

RESET

GND

CAT823

WDI

•

Automatically Restarts Microprocessor after Power Failure

Monitors Pushbutton for External Override

Accurate Under Voltage System Monitoring

Brownout Detection System Reset for use with 3.0, 3.3, and 5.0 Volt

Systems

Pin and Function Compatible with the MAX823/24/25 Products

Operating Range from

−40°C

to +85°C

Available in TSOT−23 5−lead and SC−70 Packages

These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS

Compliant

Microprocessor and Microcontroller Based Systems

Intelligent Instruments

Control Systems

Critical

Monitors

Portable Equipment

RESET

GND

RESET

CAT824

WDI

RESET

GND

RESET

CAT825

(Top Views)

Applications

•

MARKING DIAGRAM

XXXMG

XXX

= Specific Device Code

= Date Code

= Pb−Free Package*

PIN FUNCTIONS

Pin Name

RESET

GND

Function

CMOS Push−Pull Active Low Reset Output

Ground

Manual Reset input – Pulled high Internally by a 52 kW res-

istor designed to be driven low by a mechanical pushbutton,

open drain output or CMOS output.

CMOS Push−Pull Active High Reset Output

Watchdog Timer Input – Designed to be driven by a processor

output or can be disabled by tri−stating or leaving open.

Power Supply

(*Note: Microdot may be in either location)

RESET

WDI

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 11 of this data sheet.

Semiconductor Components Industries, LLC, 2012

May, 2012

−

Rev. 8

Publication Order Number:

CAT823/D

CAT823 Related Products

	CAT823	CAT824	CAT825	CAT825SDI-GT3
Description	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5

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