Diodes Incorporated

AP431S and AS431H Shunt Regulators

Diodes expands their family of shunt regulators with the 2.495 V, extremely low minimum operating current AP431S and AS431H

Image of Diodes' AP431x Shut RegulatorsDiodes' AS431H is a 2.495 V version of its popular AS431 (2.5 VREF) shunt regulator. The AP431S is an extremely low minimum cathode current shunt regulator available in both 2.495 V and 2.5 V reference voltages. The AP431S has the same electrical specifications as the industry standard 431; however, its typical minimum cathode current is only 50 µA (1/8 of the TL431), making it ideal for applications such as offline power supplies, adapters, and other adjustable regulators that require very low power consumption.

AP431S and AS431H are offered in two initial voltage tolerance grades of 0.5% and 1%.

Features
  • SOT23 and TO92 packages
    • Industry-standard packages and pin outs (SOT23 in TL431 and TL432 pinouts)
  • Both 2.5 V and 2.495 V (H) reference voltage options
    • Provide true direct replacement for 431 type shunt regulators with minimal component change
  • Better deviation of reference voltage over full temperature range
    • Low output variation over temperature
  • AP431S has low minimum operating current (IKA(MIN))
    • Minimizes operating current, reducing power consumption, especially during light or no loads, providing a cost-effective solution for low standby power consumption "green" applications
Applications
  • Adapters
  • Chargers
  • Precision voltage references
  • Isolated power supplies

AP431x Shunt Regulators

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
IC VREF SHUNT ADJ 0.5% SOT23-3AP431SANTR-G1IC VREF SHUNT ADJ 0.5% SOT23-321191 - Immediate$0.40View Details
IC VREF SHUNT ADJ 0.5% SOT23AP431SAN1TR-G1IC VREF SHUNT ADJ 0.5% SOT23129545 - Immediate$0.40View Details
IC VREF SHUNT ADJ 0.5% SOT23AP431SHANTR-G1IC VREF SHUNT ADJ 0.5% SOT238713 - Immediate
297000 - Factory Stock		$0.40View Details
IC VREF SHUNT ADJ 0.5% SOT23AP431SHAN1TR-G1IC VREF SHUNT ADJ 0.5% SOT235494 - Immediate$0.40View Details
IC VREF SHUNT ADJ 0.5% TO92AP431SAZTR-G1IC VREF SHUNT ADJ 0.5% TO921204 - Immediate$0.40View Details
IC VREF SHUNT ADJ 0.5% SOT23AS431HANTR-G1IC VREF SHUNT ADJ 0.5% SOT236034 - Immediate$0.40View Details
IC VREF SHUNT ADJ 0.5% TO92AS431HAZTR-G1IC VREF SHUNT ADJ 0.5% TO921770 - Immediate$0.40View Details
IC VREF SHUNT ADJ 0.5% SOT23AS431HMANTR-G1IC VREF SHUNT ADJ 0.5% SOT2339 - Immediate$0.40View Details
Published: 2017-04-06