Diodes Incorporated — Analog and discrete power solutions
SOT23

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SOT25

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AZ431-B (Obsolete)

Alternative Part: AZ431-A

18V ADJUSTABLE PRECISION SHUNT REGULATOR

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Description

The AZ431-A 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 AZ431-A can be set to any value between VREF (2.5V) and the corresponding maximum cathode voltage (36V). The AZ431-A precision reference is offered in two voltage tolerance: 0.4% and 0.8%.

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 to 125°C

Application(s)

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

Specifications & Technical Documents

Product Parameters

Accuracy (%) 0.8, 0.4
Compliance (Only Automotive Supports PPAP) Standard
MaximumInput Voltage (V) 18
Maximum Slope Resistance (Ω) 0.5
Minimum Cathode Current for Regulation Typ (µA) 400
Operating Ambient Temperature Range (°C) -40 to 125
Power Supply Rejection Ratio (dB) -
AEC Qualified No
ReferenceVoltage (V) 2.5
Sink Current (mA) 100

Related Content

Packages

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Purchase & Availablity

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)