zsm380 Diodes, Inc., zsm380 Datasheet

zsm380

Manufacturer Part Number

zsm380

Description

Supply Voltage Monitor

Manufacturer

Diodes, Inc.

Datasheet

1.ZSM380.pdf (5 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

ZSM380

Manufacturer:

ZETEX

Quantity:

20 000

Current page: 1 of 5
Download datasheet (103Kb)

Issue 3 - July 2006

SUPPLY VOLTAGE

MONITOR

ISSUE 3 – JULY 2006

DEVICE DESCRIPTION

The ZSM380 is a three terminal under

v o l t a g e m o n i t or c ir c ui t fo r u s e i n

microprocessor systems. The threshold

voltage of the device has been set to 3.8 volts

making it ideal for 5 volt circuits.

Included in the device is a precise voltage

reference and a comparator with built in

hysteresis to prevent erratic operation. The

ZSM380 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.

SCHEMATIC DIAGRAM

4-349

FEATURES

•

APPLICATIONS

•

SOT223 and TO92 packages

Power on reset generator

Automatic reset generation

Low standby current

Guaranteed operation from 1 volt

Wide supply voltage range

delay capacitor

3.8 volt threshold for 5 volt logic

20mV hysteresis prevents erratic operation

Microprocessor systems

Computers

Computer peripherals

Instrumentation

Automotive

Battery powered equipment

Internal clamp diode to discharge

ZSM380

Related parts for zsm380

zsm380 Summary of contents

Page 1

... SUPPLY VOLTAGE MONITOR ISSUE 3 – JULY 2006 DEVICE DESCRIPTION The ZSM380 is a three terminal under microprocessor systems. The threshold voltage of the device has been set to 3.8 volts making it ideal for 5 volt circuits. ...

Page 2

... ZSM380 ABSOLUTE MAXIMUM RATING Input Supply Voltage Offstate Output Voltage Onstate Output Sink Current( ) Note 1 Clamp Diode Forward Current( ) Note 1 Operating Junction Temperature Operating Temperature Storage Temperature TEST CONDITIONS (T =25°C for typical values, T amb COMPARATOR PARAMETER Threshold Voltage High state output (V ...

Page 3

... Clamp Diode I(forward) vs. Voltage Issue 3 - July 2006 © Zetex Semiconductors plc 2006 TYPICAL CHARACTERISTICS 85°C 25° -40°C 25°C 85°C 0.8 1.2 1.6 2.0 85°C 25°C -40°C 0.8 1.2 1.6 2.0 4-351 ZSM380 10 R =10K l T =25° Input Voltage (V) Output Voltage vs. Input Voltage 5 3 ...

Page 4

... ZSM380 TIMING DIAGRAM Vcc Threshold Voltage 1 V Output Output Undefined APPLICATION CIRCUIT Note 4: A time delayed reset can be accomplished with the additional Cd. = RCd ln æ ç 1 − ç ç è Issue 3 - July 2006 © Zetex Semiconductors plc 2006 1 ö T =Time (Seconds) DY ÷ ...

Page 5

... Metroplaza Tower 1 Hing Fong Road, Kwai Fong Hong Kong Telephone: (852) 26100 611 Fax: (852) 24250 494 asia.sales@zetex.com 4-353 ZSM380 Corporate Headquarters Zetex Semiconductors plc Zetex Technology Park, Chadderton Oldham, OL9 9LL United Kingdom Telephone: (44) 161 622 4444 Fax: (44) 161 622 4446 hq@zetex ...

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