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Description

The AP431S is a 3-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 makes it ideal substitute for Zener diode in applications such as switching power supply, charger and other adjustable regulators.

The AP431S has the same electrical specifications as the industry standard 431 except that it features a low minimum cathode current for regulation. The typical value of 50μA makes the parts ideal for very low power dissipation applications.

The output voltage of AP431S can be set to any value between VREF (2.5V/2.495V) and the corresponding maximum cathode voltage (36V).

The AP431S is offered in two grade initial voltage tolerance at +25°C, 0.5% and 1%.

This IC is available in 3 packages: TO92 (ammo packing), SOT23 and SOT89.

Application

  • Charger

  • Voltage Adapter

  • Switching Power Supply

  • Graphic Card

  • Precision Voltage Reference

Features

  • Low Minimum Cathode Current for Regulation: 50μA (Typ.), 100μA (Max.)

  • Programmable Precise Output Voltage from 2.5V/2.495V to 36V

  • High Stability Under Capacitive Load

  • Low Deviation of Reference Voltage Over Full Temperature Range: 11mV Typical (-40°C to +125°C)

  • Sink Current Capacity from 100µA to 100mA

  • Low Dynamic Impedance: 0.1Ω (Typ.)

  • Wide Operating Temperature Range: -40°C to +125°C

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP No
Reference Voltage 2.5, 2.495 V
Accuracy 0.5, 1 %
Maximum Input Voltage 40 V
Sink Current 100 mA
Minimum Cathode Current for Regulation Typ 50 µA
Maximum Slope Resistance 0.3 Ω
Operating Ambient Temperature Range -40 to 125 °C

Related Content

Packages
SOT23
SOT89
TO92

Applications

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AP431SAG-7 Digi-Key Electronics 2230 8/2/2020 Buy Now United States
AP431SAG-7 Digi-Key Electronics 3000 8/2/2020 Buy Now United States
AP431SAG-7 Future Electronics - Asia 39000 8/2/2020 Singapore
AP431SAG-7 RS Components 950 8/2/2020 Buy Now England
AP431SAG-7 RS Components Ltd. 950 8/2/2020 Buy Now Japan
AP431SAN1TR-G1 Avnet EU 6000 8/3/2020 Buy Now Germany
AP431SAN1TR-G1 Mouser Electronics Inc. 3312 8/3/2020 Buy Now United States
AP431SAN1TR-G1 Digi-Key Electronics 525 8/2/2020 Buy Now United States
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AP431SAZTR-G1 Digi-Key Electronics 1923 8/2/2020 Buy Now United States
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AP431SHAZTR-G1 Mouser Electronics Inc. 1813 8/3/2020 Buy Now United States
AP431SHAZTR-G1 Digi-Key Electronics 1842 8/2/2020 Buy Now United States
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AP431SRG-7 Avnet EU 3000 8/3/2020 Buy Now Germany
AP431SRG-7 Mouser Electronics Inc. 2482 8/3/2020 Buy Now United States
AP431SRG-7 Future Electronics - Europe 3000 8/2/2020 England

FAQs

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