Date: 11/29/04

SP690A/692A Low Power Microprocessor Supervisory with Battery Switch-Over

© Copyright 2004 Sipex Corporation

1

SP690A/692A/802L/

802M/805L/805M

Low Power Microprocessor Supervisory

with Battery Switch-Over

The SP690A/692A/802L/802M/805L/805M are a family of microprocessor (µP) supervisory

circuits that integrate a myriad of components involved in discrete solutions to monitor power-

supply and battery-control functions in µP and digital systems. The series will significantly

improve system reliability and operational efficiency when compared to discrete solutions.

The features of the SP690A/692A/802L/802M/805L/805M include a watchdog timer, a µP

reset and backup-battery switchover, and power-failure warning, a complete µP monitoring

and watchdog solution. The series is ideal for applications in automotive systems, computers,

controllers, and intelligent instruments. All designs where it is critical to monitor the power

supply to the µP and it’s related digital components will find the series to be an ideal solution.

FEATURES

■ Precision Voltage Monitor:

SP690A/SP802L/SP805L at 4.65V

SP692A/SP802M/SP805M at 4.40V

■ Reset Time Delay - 200ms

■ Watchdog Timer - 1.6 sec timeout

■ Minimum component count

■ 60µA Maximum Operating Supply Current

■ 0.6µA Maximum Battery Backup Current

■ 0.1µA Maximum Battery Standby Current

■ Power Switching

250mA Output in V

25mA Output in Battery Mode (5Ω)

■ Voltage Monitor for Power Fail or

Low Battery Warning

■ Available in 8 pin SO and DIP packages

■ RESET asserted down to V

DESCRIPTION

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VCC

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PFI

VBATT

RESET (RESET)*

WDI

PFO

*SP805 only

®

Now Available in Lead Free Packaging

■ Pin Compatible Upgrades to

MAX690A/692A/802L/802M/805L

APPLICATIONS

■ Critical µP Power Monitoring

■ Intellegent Instruments

■ Computers

■ Controllers