Datasheet ZHT431 (Diodes)

ZHT431 ADJUSTABLE PRECISION ZENER SHUNT REGULATOR Description Pin Assignments
The ZHT431 is a three terminal adjustable shunt regulator offering excellent temperature stability and output current handling capability S
(T
OT
op V
2
ie
3
w)
up to 100mA. The device offers extended operating temperature range working from -55 to +125°C. VZ The output voltage may be set to any chosen voltage between 2.5 GND and 20 volts by selection of two external divider resistors. The devices can be used as a replacement for zener diodes in many VREF applications requiring an improvement in zener performance. (Top View)
SOT23 (Type DN) Features
Surface Mount SOT23 (Type DN) Package 0.5%, 1% and 2% Tolerance
Applications
Maximum Temperature Coefficient 67ppm/°C Series and Shunt Regulator Temperature Compensated for Operation Over the Full Voltage Monitor Temperature Range Over Voltage / Under Voltage Protection Programmable Output Voltage Switch Mode Power Supplies 50μA to 100mA Current Sink Capability Low Output Noise Wide Temperature Range -55 to +125°C
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3)
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen, Antimony and Beryllium-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl), <1000ppm antimony compounds and <1000ppm Beryllium.
Typical Application Circuit
VZ VREF GND ZHT431 1 of 9 April 2018 Document number: DS32157 Rev. 12 - 2
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