Diodes ZM33164-3 User Manual download pdf

Issue 4 - July 2006

SUPPLY VOLTAGE

MONITOR

ISSUE 4 – JULY 2006

ZM33164-3

DEVICE DESCRIPTION

The ZM33164-3 is a three terminal under

voltage monitor circuit for use in

microprocessor systems. The threshold

voltage of the device has been set to 2.68

volts making it ideal for 3 volt circuits.

Included in the device is a precise voltage

reference and a comparator with built in

hysteresis to prevent erratic operation. The

ZM33164-3 features an open collector output

capable of sinking at least l0mA which only

requires a single external resistor to

interface to following circuits.

Operation of the device is guaranteed from

one volt upwards, from this level to the

device threshold voltage the output is held

low providing a power on reset function.

Should the supply voltage, once established,

at any time drop below the threshold level

then the output again will pull low.

The device is available in a TO92 package for

through hole applications as well as SOT223

for surface mount requirements.

FEATURES

•

SOT223 and TO92 packages

•

Power on reset generator

•

Automatic reset generation

•

Low standby current

•

Guaranteed operation from 1 volt

•

Wide supply voltage range

•

Internal clamp diode to discharge delay

capacitor

•

2.68 volt threshold for 3 volt logic

•

60mV hysteresis prevents erratic operation

APPLICATIONS

•

Microprocessor systems

•

Computers

•

Computer peripherals

•

Instrumentation

•

Automotive

•

Battery powered equipment

SCHEMATIC DIAGRAM

4-99

1 2 3 4 5

ZM33164-3 1

Summary of Contents

Page 1 - ZM33164-3

Issue 4 - July 2006© Zetex Semiconductors plc 2006SUPPLY VOLTAGEMONITORISSUE 4 – JULY 2006ZM33164-3DEVICE DESCRIPTIONThe ZM33164-3 is a three terminal

Page 2

Issue 4 - July 2006 www.zetex.com© Zetex Semiconductors plc 20060246810-40 °C 25 °C 85 °C1002004003005000100.8 1.62.00.4 1. 20204050Sink Current (mA)-

Page 3

Issue 4 - July 2006 www.zetex.com© Zetex Semiconductors plc 2006TEST CONDITIONS (Tamb=25°C for typical values, Tamb=-40 to 85°C for min/max values (No

Page 4

Issue 4 - July 2006 www.zetex.com© Zetex Semiconductors plc 2006VccThresholdVoltag e1VOutputUndefinedOutputUndefinedOutputNote 4: A time delayed rese

Page 5

For international sales offices visit www.zetex.com/officesZetex products are distributed worldwide. For details, see www.zetex.com/salesnetwork This

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