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AZ431L

Low Voltage (1.24V) adjustable Precision Shunt Regulator

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Description

The AZ431L series ICs are low voltage three-terminal adjustable 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 applications such as switching power supply, charger, motherboard and other adjustable regulators. The output voltage can be set to any value between 1.24V and 18V with two external resistors. The AZ431L precision reference is offered in two voltage tolerance: 0.5% and 1.0%. These ICs are available in 4 packages: TO-92 (bulk or ammo packing), SOT-23, SOT-23-5 and SOT-89.

Application(s)

  • Graphic Card
  • PC Motherboard
  • Voltage Adapter
  • Switching Power Supply
  • Charger

Feature(s)

  • Wide Programmable Precise Output Voltage from 1.24V to 18V
  • High Stability under Capacitive Load
  • Low Temperature Deviation: 3mV Typical
  • Low Equivalent Full-range Temperature Coefficient: 20PPM/°C Typical
  • Low Dynamic Output Resistance: 0.05Ω typical
  • High Sink Current Capacity from 0.1mA 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) 1.24 V
Accuracy (%) 1, 0.5 %
MaximumInput Voltage (V) 18 V
Sink Current (mA) 100 mA
Minimum Cathode Current for Regulation Typ (µA) - µA
Maximum Slope Resistance (Ω) 0.15 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
AZ431LANTR-G1

AZ431LANTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 1 9/19/2021 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 2 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AZ431LAZTR-G1

AZ431LAZTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 634 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
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AZ431LBKTR-G1

AZ431LBKTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 3970 9/19/2021 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 2889 9/19/2021 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
AZ431LBNTR-E1

AZ431LBNTR-E1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 3000 9/19/2021 Europe, Asia, North America Buy Now
Request Sample
AZ431LBNTR-G1

AZ431LBNTR-G1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
RS Components 2600 9/19/2021 England Buy Now
Request Sample
AZ431LBZTR-E1

AZ431LBZTR-E1

Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 3703 9/19/2021 Europe, Asia, North America Buy Now
Request Sample

PCNs

Product Change Notices

PCN # Issue Date Implementation Date Subject
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-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