AS431H View Datasheet(PDF) - Diodes Incorporated.
Part Name
Description
Manufacturer
AS431H Datasheet PDF : 15 Pages
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AS431H
ADJUSTABLE PRECISION SHUNT REGULATORS
Description
The AS431H is a three-terminal adjustable shunt regulator with
guaranteed thermal stability over a full operation range. It features
sharp turn-on characteristics, low temperature coefficient and low
output impedance, which make it ideal substitute for Zener diode in
applications such as switching power supply, charger and other
adjustable regulators.
Pin Assignments
(Top View)
ANODE
3
The output voltage of AS431H can be set to any value between VREF
(2.495V) and the corresponding maximum cathode voltage (36V).
The AS431H precision reference is offered in two voltage tolerance:
0.5% and 1.0%.
This IC is available in 2 packages: TO92 (Ammo Packing) and
SOT23.
Features
Programmable Precise Output Voltage from 2.495V to 36V
High Stability under Capacitive Load
Low Temperature Deviation: 5mV Typical
Low Equivalent Full-range Temperature Coefficient with
20PPM/°C Typical
Sink Current Capacity from 0.5mA to 100mA
Low Output Noise
Wide Operating Range of -40 to +125°C
Lead-Free Packages, Available in “Green” Molding Compound:
SOT23, TO92 (Ammo Packing)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
Charger
Voltage Adapter
Switching Power Supply
Graphic Card
Precision Voltage Reference
1
2
REF
CATHODE
SOT23
(Normal Pin-out)
(Top View)
ANODE
3
1
2
CATHODE
REF
SOT23
(Mirror Pin-out)
(Top View)
3 CATHODE
2 ANODE
1 REF
TO92 (Ammo Packing)
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AS431H
Document number: DS39284 Rev. 1 - 2
1 of 15
www.diodes.com
January 2017
© Diodes Incorporated
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