ZR431F01 ZETEX [Zetex Semiconductors], ZR431F01 Datasheet

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ZR431F01

Manufacturer Part Number
ZR431F01
Description
ADJUSTABLE PRECISION ZENER SHUNT REGULATOR
Manufacturer
ZETEX [Zetex Semiconductors]
Datasheet

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ADJUSTABLE PRECISION
ZENER SHUNT REGULATOR
ISSUE 4 – SEPTEMBER 2000
DEVICE DESCRIPTION
The ZR431 is a three terminal adjustable
s h u n t r e g u l a t o r o ff e r i n g e x ce ll e nt
temperature stability and output current
handling capability up to 100mA. The output
voltage may be set to any chosen voltage
between 2.5 and 20 volts by selection of two
external divider resistors.
The devices can be used as a replacement
for zener diodes in many applications
r e q u i r i n g a n i m p r o v e me n t in ze n e r
performance.
SCHEMATIC DIAGRAM
V
ref
4-189
78
FEATURES








APPLICATIONS





Surface mount SO8, SOT223 and
SOT23 packages
TO92 package
2%, 1 % and 0.5% tolerance
Max. temperature coefficient 55 ppm/°C
Temperature compensated for operation
over the full temperature range
Programmable output voltage
50
Low output noise
Shunt regulator
Series regulator
Voltage monitor
Over voltage/ under voltage protection
Switch mode power supplies

A to 100mA current sink capability
ZR431
G
V
Z
nd

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ZR431F01 Summary of contents

Page 1

ADJUSTABLE PRECISION ZENER SHUNT REGULATOR ISSUE 4 – SEPTEMBER 2000 DEVICE DESCRIPTION The ZR431 is a three terminal adjustable ...

Page 2

ZR431 ABSOLUTE MAXIMUM RATING Cathode Voltage (V ) 20V Z Cathode Current 150mA Operating Temperature -40 to 85°C Storage Temperature -55 to 125°C Recommended Operating Conditions Min Cathode Voltage Vref Cathode Current 50 A 100mA  ELECTRICAL CHARACTERISTICS TEST CONDITIONS ...

Page 3

TYPICAL CHARACTERISTICS 160 V =V ref I =10mA Z 150 140 130 120 110 100 -40 - Temperature (°C) Reference Current v Temperature 38 V ref  -40 -20 ...

Page 4

ZR431 TYPICAL CHARACTERISTICS 100 1k 10k 100k 1M Frequency (Hz) Gain v Frequency 3.0 Repetitive pulse 2.0 V Single pulse Z 1.0 0 5.0 INPUT 0 0 0.2 0.4 0.6 0.8 1.0 Time ( s ) ...

Page 5

APPLICATION CIRCUITS V+ R1 Vref Vref Vout = R2 SHUNT REGULATOR ZSR*** V+ Vout Out In Common R1 Vref R2 Vout = Vref + Vreg MIN R1 Vout = 1 + Vref R2 OUTPUT CONTROL OF ...

Page 6

ZR431 DC TEST CIRCUITS I L Input Fig 1 – Test Circuit for ref NOTES Deviation of reference input voltage, V input voltage over the full temperature range. The average temperature coefficient of the reference input voltage, ...

Page 7

... Part Number Package Tol. % ZR431C01 TO92 1.0 ZR431C TO92 2.0 ZR431G01 SOT223 1.0 ZR431G SOT223 2.0 ZR431F005 SOT23 0.5 ZR431F01 SOT23 1.0 ZR431F SOT23 2.0 ZR431N801 SO8 1.0 ZR431N8 SO8 2.0 SOT223 Package Suffix – G Top View – Pin 4 floating or connected to pin 2 TO92 Package Suffix – C Bottom View Part Mark ZR43101 ...

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