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AP431S and AS431H Shunt Regulators

By Diodes Incorporated 59

AP431S and AS431H Shunt Regulators

Diodes' 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

New Products:

AP431SANTR-G1AP431SAN1TR-G1AP431SHANTR-G1AP431SHAN1TR-G1AP431SAZTR-G1AP431SHAZTR-G1AS431HANTR-G1AS431HAZTR-G1AS431HMANTR-G1

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Power ManagementSemiconductors & Dev ToolsDiodes Incorporated

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