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ZSM330G

Description
SUPPLY VOLTAGE MONITOR
CategoryPower/power management    The power supply circuit   
File Size410KB,5 Pages
ManufacturerZetex Semiconductors
Websitehttp://www.zetex.com/
Environmental Compliance
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ZSM330G Overview

SUPPLY VOLTAGE MONITOR

ZSM330G Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerZetex Semiconductors
package instructionSOT-223, 4 PIN
Reach Compliance Code_compli
ECCN codeEAR99
Other featuresRESET THRESHOLD VOLTAGE IS 3.1V; POWER ON RESET GENERATOR
Adjustable thresholdNO
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
JESD-30 codeR-PDSO-G4
JESD-609 codee3
length6.5 mm
Humidity sensitivity level1
Number of channels1
Number of functions1
Number of terminals4
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.8 mm
Maximum supply voltage (Vsup)6.5 V
Minimum supply voltage (Vsup)1 V
Nominal supply voltage (Vsup)3.3 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch2.3 mm
Terminal locationDUAL
Maximum time at peak reflow temperature10
width3.5 mm
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
4-344
Issue
3
-
July 2006
© Zetex Semiconductors plc 2006

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