A Product Line of
Diodes Incorporated
AS431
ADJUSTABLE PRECISION SHUNT REGULATORS
Description Features
The AS431 is a three-terminal adjustable shunt regulator with
Programmable Precise Output Voltage from 2.5V to 36V
guaranteed thermal stability over a full operation range. It features
High Stability under Capacitive Load
sharp turn-on characteristics, low temperature coefficient and low
Low Temperature Deviation: 4.5mV Typical
output impedance, which make it ideal substitute for Zener diode in
Low Equivalent Full-range Temperature Coefficient with
applications such as switching power supply, charger and other
20PPM/C Typical
adjustable regulators.
Sink Current Capacity from 1mA to 100mA
Low Output Noise
The output voltage of AS431 can be set to any value between VREF
Wide Operating Range of -40 to +125C
(2.5V) and the corresponding maximum cathode voltage (36V).
Lead-Free Packages: SOT-23, SOT-23-5, TO-92, SOT-89
Totally Lead-Free; RoHS Compliant (Notes 1 & 2)
The AS431 precision reference is offered in two voltage tolerance:
0.5% and 1.0%.
Lead-Free Packages, Available in Green Molding Compound:
SOT-23, SOT-23-5, TO-92, SOT-89
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
This IC is available in 4 packages: TO-92 (bulk or ammo packing),
SOT-23, SOT-23-5 and SOT-89. Halogen and Antimony Free. Green Device (Note 3)
Applications
Charger
Voltage Adapter
Switching Power Supply
Graphic Card
Precision Voltage Reference
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See
A Product Line of
Diodes Incorporated
AS431
Typical Applications Circuit
Shunt Regulator
High Current Shunt Regulator
2 of 19 October 2013
AS431
Diodes Incorporated
www.diodes.com
Document number: DS36599 Rev. 3 - 2