ZSM330 データシートの表示（PDF） - Diodes Incorporated.

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ZSM330

SUPPLY VOLTAGE MONITOR

Diodes Incorporated. 

SUPPLY VOLTAGE

MONITOR

ISSUE 3 – JULY 2006

DEVICE DESCRIPTION

The ZSM330 is a three terminal under

voltage monitor circuit for use in

microprocessor systems. The threshold

voltage of the device has been set to 3.1 volts

making it ideal for 3.3 volt circuits.

Included in the device is a precise voltage

reference and a comparator with built in

hysteresis to prevent erratic operation. The

ZSM330 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.

ZSM330

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

• 3.1 volt threshold for 3.3 volt logic

• 20mV hysteresis prevents erratic operation

APPLICATIONS

• Microprocessor systems

• Computers

• Computer peripherals

• Instrumentation

• Automotive

• Battery powered equipment

SCHEMATIC DIAGRAM

Issue 3 - July 2006

© Zetex Semiconductors plc 2006

4-344

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