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The AS78XXA series are three terminal positive voltage regulators designed for a wide variety of applications including local, on-card regulation. The AS78XXA are complete with internal current limiting, thermal shutdown protection, and safe-area compensation which make them virtually immune from output overload. If adequate heat sinking are provided, these regulators can deliver output currents up to 1A. The AS78XXA are available in TO-252-2 (1), TO- 252-2 (3), TO-252-2 (4), TO-220-3 and TO-220F-3 packages.


· High Efficiency Linear Regulator · Post Regulation for Switching Supply · Microprocessor Power Supply · Mother Board

Product Specifications

Product Parameters

AEC Qualified No
Compliance (Only Automotive supports PPAP) Standard
Dropout Voltage Typical (V) 2 V
Operating Input Voltage (V) 32 V
Output Current (A) 1 A
Output Voltage (V) 12 V
PSRR Typ @ 120hz (dB) 60 dB
Quiescent Current Typ (mA) 3.4 mA
Operating Ambient Temperature Range (Junction Temperature) (°C) 0 to 125 °C

Technical Documents

Recommended Soldering Techniques


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-2594 2022-08-31 2023-02-28 Device End of Life (EOL)
PCN-2568 2022-03-29 2022-03-29 Qualified Additional Assembly & Test (A/T) Sites, Bill of Material, and updated Data Sheets for Package Outline Dimension Change