SP6341 datasheet(6/13 Pages) SIPEX

Part #	SP6341

Description	Triple 關Power Supervisory Circuit with Manual Reset and Watchdog

PDF	13 Pages

Scroll/Zoom	100%

Manufacturer	SIPEX [Sipex Corporation]

Direct Link	http://www.sipex.com

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6 / 13 page

Nov 20-06 Rev J

SP6339-SP6341 Triple µPower Supervisory Circuit

The SP6339 and SP6341 include a low-

voltage precision bandgap reference, three

precision comparators, an oscillator, a digital

counter chain, a logic control block, trimmed

resistor divider chains and additional

supporting circuitry. The family is designed

to supervise up to 3 independent supply

voltages. V1 and V2 supply inputs have

their resistor dividers on the chip. Their trip

thresholds are factory trimmed. The V3

input allows users to customize an additional

supply threshold to be monitored by means

of an external resistor divider. The parts are

furnished with manual reset and watchdog

output functionalities. The watchdog

functionality cannot be disabled.

Block Diagram

THEORY OF OPERATION

OSC

WDI

LOGIC

CONTROL

LOGIC

WDI

RSTB

GND

1.25V

0.5V

MRIB

WDOB

Band

Gap

Ref

SP6341 Datasheet(PDF) 6 Page - Sipex Corporation