Diodes Incorporated
-40℃~+85℃ 1 340kHz 3A 4.7V~23V 600uA 925mV~20V Adjustable Buck Built-in Overcurrent Protection、Adjustable soft-start、Cycle-by-cycle current limiting、External compensation Step-down type Yes SOP-8-EP DC-DC Converters ROHS
The AP6503SP is a DC DC Converter made by Diodes Incorporated in a SOP-8-EP package with 9 pins. -40℃~+85℃ 1 340kHz 3A 4.7V~23V 600uA 925mV~20V Adjustable Buck Built-in Overcurrent Protection、Adjustable soft-start、Cycle-by-cycle current limiting、External compensation Step-down type Yes SOP-8-EP DC-DC Converters ROHS.
PCBKit's library has its KiCad symbol (Regulator_Switching:AP6503, from KiCad's library) and its footprint (EasyEDA_Cloud:SOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP, from EasyEDA), ready for a KiCad board. JLCPCB lists it (part C51811). 5 open-source boards in 5 repositories on GitHub use it.
| Pin | Name | Type |
|---|---|---|
| 1 | BST | Output |
| 2 | IN | Power in |
| 3 | SW | Power out |
| 4 | GND | Power in |
| 5 | FB | Input |
| 6 | COMP | Output |
| 7 | EN | Input |
| 8 | SS | Tri-state |
| 9 | EP | Power in |
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<iframe src="https://pcbkit.io/embed/parts/diodes/AP6503SP" title="AP6503SP in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe><img src="https://pcbkit.io/embed/parts/diodes/AP6503SP.jpg" alt="AP6503SP" width="1200" height="900">[](https://pcbkit.io/parts/diodes/AP6503SP)Yes. The symbol is Regulator_Switching:AP6503 and the footprint EasyEDA_Cloud:SOP-8_L4.9-W3.9-P1.27-LS6.0-BL-EP, both drawn on this page. PCBKit places them on a board for you when you design with it.
SOP-8-EP, with 9 pins. Its footprint is drawn on this page.
Diodes Incorporated publishes it: the Datasheet link on this page opens it.
JLCPCB lists it as part C51811, with 0 in stock; the sellers' links on this page open their listings.
Parts like it in the library: the TPS5450DDAR by Texas Instruments, the TPS54427DDAR by Texas Instruments, the RT8279GSP by Richtek Tech and the LP6221ASPF by LOWPOWER. Check their datasheets: a part that fits the footprint may still differ in its ratings.
5 boards in 5 repositories on GitHub; the most starred are listed on this page, with their KiCad files.
