Diodes ZHT431 User Manual
Zht431, Description, Pin assignments
ZHT431
ZHT431
Document number: DS32157 Rev. 11 - 2
1 of 8
November 2010
© Diodes Incorporated
A Product Line of
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
• 50
μA 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
V
REF
(Top View)
SOT23