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ZHT431
ZHT431
Document number: DS32157 Rev. 11 - 2
1 of 8
www.diodes.com
November 2010
© Diodes Incorporated
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Diodes Incorporated
ADJUSTABLE PRECISION ZENER SHUNT REGULATOR
Description
The ZHT431 is a three terminal adjustable shunt regulator
offering excellent temperature stability and output current
handling capability up to 100mA. The device offers
extended operating temperature range working from -55 to
+125°C.
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 requiring an improvement in
zener performance.
Pin Assignments
Features
• Surface mount SOT23 package
• 0.5%, 1% and 2% tolerance
• Maximum temperature coefficient 67ppm/°C
• Temperature compensated for operation over the full
temperature range
• Programmable output voltage
• 50μA to 100mA current sink capability
• Low output noise
• Available in “Green” Molding Compound (See page 7)
• Wide temperature range -55 to +125°C
Applications
• Series and shunt regulator
• Voltage monitor
• Over voltage / under voltage protection
• Switch mode power supplies
Typical Application Circuit
GND
V
Z
VREF
(Top View)
SOT23
Verzeichnis
