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AS431

ADJUSTABLE PRECISION SHUNT REGULATORS

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Description

The AS431 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. The output voltage of AS431 can be set to any value between VREF (2.5V) and the corresponding maximum cathode voltage (36V). The AS431 precision reference is offered in two voltage tolerance: 0.5% and 1.0%.

Application(s)

  • Charger
  • Voltage Adapter
  • Switching Power Supply
  • Graphic Card
  • Precision Voltage Reference

Feature(s)

  • Programmable Precise Output Voltage from 2.5V to 36V
  • High Stability under Capacitive Load
  • Low Temperature Deviation: 4.5mV Typical
  • Low Equivalent Full-range Temperature Coefficient with 20PPM/°C Typical
  • Sink Current Capacity from 1mA to 100mA
  • Low Output Noise
  • Wide Operating Range of -40°C to 125°C

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Qualified to AEC-Q10x No
ReferenceVoltage (V) 2.5 V
Accuracy (%) 0.5, 1 %
MaximumInput Voltage (V) 36 V
Sink Current (mA) 100 mA
Minimum Cathode Current for Regulation Typ (µA) 1000 µA
Maximum Slope Resistance (Ω) 0.5 Ω
Operating Ambient Temperature Range (°C) -40 to 125 °C

Related Content

Packages

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Our shunt voltage regulator portfolio includes 2.5V, 1.24V, and 0.6V reference voltage devices covering consumer, computing, industrial, and automotive applications.

It includes industry standard TL431 and TL432 equivalents, as well as footprint compatible, very low minimum (knee) current for latest low standby power isolated power supplies. Additionally, it includes a well enhanced operating voltage range TLV431 (1.24V) equivalents. All of the 2.5V and 1.24V support operating temperatures up to 125°C as standard, therefore reducing the number of variants that need to be qualified and stocked.

Automotive-compliant variants are available which are qualified to AEC-Q100 Grade 1 in IATF 16949 facilities supporting PPAP documentation.

Orderable Part Number Buy from Distributor / Contact Sales Request Samples
AS431ANTR-E1

AS431ANTR-E1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 56 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AS431ANTR-G1

AS431ANTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 238300 9/19/2021 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 439454 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AS431ARTR-E1

AS431ARTR-E1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 70 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AS431AZTR-E1

AS431AZTR-E1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 1966 9/19/2021 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 1873 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Farnell, An Avnet Company 1414 9/17/2021 England Buy Now
Farnell, An Avnet Company 1414 9/17/2021 England Buy Now
Request Sample
AS431AZTR-G1

AS431AZTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 2000 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AS431BKTR-G1

AS431BKTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 1276 9/19/2021 Europe, Asia, North America Buy Now
Micronetics GmbH 36000 9/13/2021 Germany Contact Sales
Request Sample
AS431BNTR-E1

AS431BNTR-E1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 9199 9/19/2021 Europe, Asia, North America Buy Now
Future Electronics 45000 9/19/2021 Canada Buy Now
Mouser Electronics Inc. 4423 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AS431BNTR-G1

AS431BNTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Arrow Electronics 2 9/19/2021 United States Buy Now
Digi-Key Electronics 1080 9/19/2021 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 383 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
RS Components 1900 9/19/2021 England Buy Now
Farnell, An Avnet Company 3315 9/17/2021 England Buy Now
Farnell, An Avnet Company 3315 9/17/2021 England Buy Now
Request Sample
AS431BRTR-G1

AS431BRTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 814 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AS431BZTR-E1

AS431BZTR-E1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 5838 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Farnell, An Avnet Company 1950 9/17/2021 England Buy Now
Request Sample
AS431HANTR-G1

AS431HANTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 4 9/19/2021 Europe, Asia, North America Buy Now
Farnell, An Avnet Company 4960 9/17/2021 England Buy Now
Farnell, An Avnet Company 4960 9/17/2021 England Buy Now
Request Sample
AS431HAZTR-G1

AS431HAZTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 153 9/19/2021 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 578 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AS431HBNTR-G1

AS431HBNTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 2721 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AS431HBZTR-G1

AS431HBZTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 3537 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AS431HMANTR-G1

AS431HMANTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 32 9/19/2021 Europe, Asia, North America Buy Now
Request Sample
AS431HMBNTR-G1

AS431HMBNTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 2109 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample

PCNs

Product Change Notices

PCN # Issue Date Implementation Date Subject
PCN-2514 2021-03-09 2021-06-09 Additional Wafer Source JKFAB
PCN-2492 2020-11-04 2021-05-04 Device End of Life (EOL)
PCN-2471 2020-07-01 2020-11-29 Additional Wafer Source - GFAB
PCN-2415 2019-06-28 2019-12-28 Device End of Life (EOL)
PCN-2331 2018-03-22 2018-06-22 Additional Qualified BOM (Bill of Materials) on Selected Devices
PCN-2246 2017-06-28 2017-09-28 Additional Qualified Assembly/Test (A/T) Site – Chengdu A/T (CAT) with Part Marking Update