AP431S/AP431SH

Description

The AP431S/AP431SH 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/AP431SH 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 the AP431S/AP431SH can be set to any value between V_REF (2.5V/2.495V) and the corresponding maximum cathode voltage (36V).

The AP431S/AP431SH is offered in two grade initial voltage tolerance at +25°C, 0.5% and 1%.

This IC is available in 3 packages: TO-92 (Ammo Packing), SOT23 and SOT89.

Feature(s)

• 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
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. “Green” Device (Note 3)
• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/

Application(s)

• Chargers
• Voltage adapters
• Switching power supplies
• Graphic cards
• Precision voltage references