zh431 ETC-unknow, zh431 Datasheet

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zh431

Manufacturer Part Number
zh431
Description
Adjustable Precision Zener Shunt Regulator
Manufacturer
ETC-unknow
Datasheet

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Part Number:
zh431F01TA
Manufacturer:
ZETEX
Quantity:
20 000
ADJUSTABLE PRECISION
ZENER SHUNT REGULATOR
Issue 2 - February 1998
DEVICE DESCRIPTION
The ZH431 is a three terminal adjustable
s hu n t r e g u l a t or o f f e r i n g e xc el l e nt
temperature stability and output current
handling capability up to 30mA. The output
voltage may be set to any chosen voltage
between 2.5 and 36 volts by selection of two
external divider resistors.
The devices can be used as a replacement
for zener diodes in many applications
r e qu i r i n g a n i mpr o ve me nt i n z e ner
performance.They are also ideal for use in
the feedback circuits of off line SMPUs as
well as many general purpose regulator and
reference applications where initial accuracy
and low temperature coefficient are key
requirements.
Note:
ZH431 is not recommended for new designs.
Refer to ZR431
SCHEMATIC DIAGRAM
V
ref
4-15
FEATURES
APPLICATIONS
Surface mount SO8, SOT223,SOT23
and SOT89 packages
TO92 package
2% and 1% tolerance
Maximum temperature coefficient 55
ppm/°C
Temperature compensated for
operation over the full temperature
range
Programmable output voltage
50 A to 30mA current sink capability
Low output noise
Shunt regulator
Series regulator
Voltage monitor
Over voltage/ under voltage protection
Switch mode power supplies
ZH431
G
V
Z
nd

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zh431 Summary of contents

Page 1

... ADJUSTABLE PRECISION ZENER SHUNT REGULATOR Issue 2 - February 1998 DEVICE DESCRIPTION The ZH431 is a three terminal adjustable temperature stability and output current handling capability up to 30mA. The output voltage may be set to any chosen voltage between 2 ...

Page 2

... ZH431 ABSOLUTE MAXIMUM RATING Cathode Voltage (V ) 40V Z Cathode Current 50mA Operating Temperature -40 to 85°C Storage Temperature -55 to 125°C Recommended Operating Conditions Min Max Cathode Voltage Vref 36V Cathode Current 50 A 30mA ELECTRICAL CHARACTERISTICS TEST CONDITIONS (Unless otherwise stated):T =25°C ...

Page 3

... Temperature (°C) Cathode Current v Temperature 2.52 Iz= 10mA 2.51 2.50 2.49 2.48 2.47 -40 - Temperature (°C) Reference Voltage v Temperature ZH431 -10 -15 -20 - Cathode Voltage (V) Change in Vref v Cathode Voltage 100 Vref= 0.1 0.01 100 1k 10k Frequency (Hz) Dynamic Impedance v Frequency 2.0 SOT223 1 ...

Page 4

... ZH431 TYPICAL CHARACTERISTICS 10k 100 1k 100k Frequency (Hz) Gain v Frequency 3.0 REPETITIVE PULSE 2.0 SINGLE PULSE 1 INPUT 0 0 0.05 0.1 0.15 0.2 Time (µs) Pulse Response Unstable Stable Stable 10p 100p 1000p 0.01µ 0.1µ Load Capacitance (F) Stability Boundary Conditions I Z 15k ...

Page 5

... DC TEST CIRCUITS I L Input Fig 1 – Test Circuit for ref Fig 2 – Test Circuit for V >V z ref 4-19 ZH431 ...

Page 6

... ZH431 APPLICATION CIRCUITS V+ Vout 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 A THREE TERMINAL FIXED REGULATOR V+ OUTPUT INPUT off = 2. SINGLE SUPPLY COMPARATOR WITH TEMPERATURE COMPENSATED THRESHOLD ...

Page 7

... ZH431F01 SOT23 1.0 43H ZH431F02 SOT23 2.0 43G ZH431Z01 SOT89 1.0 43H ZH431Z02 SOT89 2.0 43G ZH431N801 SO8 1.0 ZH43101 ZH431N802 SO8 2.0 ZH43102 ZH431 SOT223 Package Suffix – G Top View – Pin 4 floating or connected to pin 2 TO92 Package Suffix – C Bottom View SOT89 Package Suffix – Z Top View – ...

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