zsm530 Zetex Semiconductors plc., zsm530 Datasheet

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zsm530

Manufacturer Part Number
zsm530
Description
Supply Voltage Monitor
Manufacturer
Zetex Semiconductors plc.
Datasheet

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Part Number:
ZSM530
Manufacturer:
ZETEX
Quantity:
20 000
SUPPLY VOLTAGE
MONITOR
ISSUE 1 – NOVEMBER 1995
DEVICE DESCRIPTION
The ZSM530 is a three terminal under
v o l t a g e mo ni t or ci r cui t f or us e i n
microprocessor systems. The threshold
voltage of the device has been set to 4.3 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
ZSM530 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 SO8 and
SOT223 for surface mount requirements.
SCHEMATIC DIAGRAM
4-354
FEATURES
APPLICATIONS
SO8, 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
4.3 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
ZSM530

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zsm530 Summary of contents

Page 1

... SUPPLY VOLTAGE MONITOR ISSUE 1 – NOVEMBER 1995 DEVICE DESCRIPTION The ZSM530 is a three terminal under cui microprocessor systems. The threshold voltage of the device has been set to 4.3 volts making it ideal for 5 volt circuits. ...

Page 2

... Maximum power dissipation, for the SOT223 and SO8 packages, is calculated assuming that the device is mounted on a PCB measuring 2 inches square. 3. Low duty cycle pulse techniques are used during test to maintain junction temperatures as close to ambient as possible. ZSM530 Power Dissipation TO92 SOT223 SO8 =-40 to 85° ...

Page 3

... ZSM530 TYPICAL CHARACTERISTICS 500 400 300 -40 °C 25 °C 85 °C 200 100 (V) Input Voltage Input Current vs. Input Voltage -40 °C 25 ° ° 0.4 0.8 1.2 1.6 2.0 Output Saturation Voltage (V) Output Saturation Voltage vs. Sink Current 100 V = °C 25 ° ...

Page 4

... AAAA AAAA AAAA Output Undefined APPLICATION CIRCUIT Note 4: A time delayed reset can be accomplished with the additional Cd RCd mpu ZSM530 AAAA AAA AAAA AAA AAAA AAA AAAA AAA AAAA AAA AAAA AAA AAAA AAA AAAA AAA AAAA ...

Page 5

... CONNECTION DIAGRAMS SO8 Package Suffix – N8 Top View TO92 Package Suffix – C Bottom View ORDERING INFORMATION Part Number Package ZSM530N8 SO8 ZSM530G SOT223 ZSM530C TO92 SOT223 Package Suffix – G Top View – Pin 4 floating or connected to pin 2 Part Mark ZSM530 ZSM530 ZSM530 4-358 ...

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