Diodes Incorporated

AP1117 (Not Recommended for new design)

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


AP1117 is a low dropout positive adjustable or fixed-mode regulator with 1A output current capability. The product is voltage specifically designed to provide well-regulated supply for low IC applications such as high-speed bus termination and low current 3.3V logic supply. AP1117 is also well suited for other applications such as VGA cards. AP1117 is guaranteed to have lower than 1.4V dropout at full load current making it ideal to provide well-regulated outputs of 1.25 to 5.0 with 6.4V to 18V input supply. AP1117 is available in commercial temperature grade.


  • 1.4V Maximum Dropout at Full Load Current
  • Fast Transient Response
  • Output Current Limiting
  • Built-in Thermal Shutdown
  • Good Noise Rejection
  • 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 3.3V, 5.0V
  • Lead Free Packages: - SOT223-3L, TO252-3L, SOT89-3L, TO263-3L and TO220-3L
  • SOT223-3L, TO252-3L and SOT89-3L: - Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/RoHS Compliant


  • PC Peripheral
  • Communication

Product Specifications

Product Parameters

Related Content

Quality Documentation

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-2672 2024-03-11 2024-09-07 Device End of Life (EOL)
PCN-2519 2021-05-20 2021-11-20 Device End of Life (EOL)
PCN-2380 2018-11-07 2019-05-07 Device End of Life (EOL)