AZ9431Q
AUTOMOTIVE COMPLIANT 1.24V ADJUSTABLE PRECISION SHUNT REGULATOR
Description
Pin Assignments
SOT23
The AZ9431Q series are three-terminal adjustable shunt regulators
with guaranteed thermal stability over a full operation range. These
ICs feature sharp turn-on characteristics, low temperature coefficient,
and low output impedance, which make them ideal substitutes for
zener diodes in automotive and high-reliability applications requiring
an improvement in zener performance.
REF
1
3
ANODE
CATHODE
2
The output voltage can be set to any value between 1.24V and 18V
with two external resistors.
(Top View)
The AZ9431Q precision reference is offered in 0.5% and 1.0%
voltage tolerance.
The AZ9431Q are available in SOT23 that are qualified to AEC-Q100
standards for high reliability and are PPAP capable.
Typical Applications Circuit
Features
Wide Programmable Precise Output Voltage from 1.24V to 18V
Temperature Range -40°C to +125°C
Reference Voltage Tolerance at +25°C
0.5% AZ9431AQSA-7
1% AZ9431BQSA-7
High Stability Under Capacitive Load
Low Temperature Deviation: 3mV Typical
Low Equivalent Full-Range Temperature Coefficient: 20PPM/°C
Low Dynamic Output Resistance: 0.05Ω Typical
High-Sink Current Capacity from 0.1mA to 100mA
Low Output Noise
Shunt Regulator
Wide Operating Range of -40°C to +125°C
Green Molding
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
The AZ9431Q series are suitable for automotive applications
requiring specific change control; these parts are AEC-Q100
qualified, PPAP capable, and manufactured in IATF 16949
certified facilities.
https://www.diodes.com/quality/product-definitions/
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- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
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www.diodes.com
January 2022
© Diodes Incorporated
AZ9431Q
Document number: DS40953 Rev. 2 - 2