Diodes Incorporated

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AZ432 (Obsolete)


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The AZ432 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 1.25V and 18V with two external resistors. The AZ432 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.


  • Wide Programmable Precise Output Voltage from 1.25V 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


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

Product Specifications

Product Parameters

Accuracy (%) 1, 0.5
Compliance (Only Automotive supports PPAP) No
MaximumInput Voltage (V) 18
Maximum Slope Resistance (Ω) 0.15
Minimum Cathode Current for Regulation Typ (µA) 55
Operating Ambient Temperature Range (°C) -40 to 125
AEC Qualified No
ReferenceVoltage (V) 1.25
Sink Current (mA) 100

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2492 2020-11-04 2021-05-04 Device End of Life (EOL)
PCN-2331 2018-03-22 2018-06-22 Additional Qualified BOM (Bill of Materials) on Selected Devices