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ap1501-50k5g-13
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Diodes Incorporated DC-DC Converters, TO-263-5. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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README
markdownAP1501-50K5G-13
Diodes Incorporated · DC-DC Converters · TO-263-5
AP1501-50K5G-13 from Diodes Incorporated, in a TO-263-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | power_in | Positive input supply for the IC switching regulator. Operating range up to 40V (absolute max +45V). Requires an input bypass capacitor to minimize voltage transients and supply the switching currents needed by the regulator. |
| 2 | Output | output | Internal switching output (emitter of the on-chip 3A NPN switch). The voltage at this pin switches between (+VIN - VSAT) and approximately -0.5V with a duty cycle of approximately VOUT/VIN. Connects to the external inductor and catch diode of the buck converter; PCB copper area on this node should be kept minimal to reduce EMI coupling. |
| 3 | Gnd | power_in | Circuit ground. The exposed metal tab of the TO263-5L package is also connected to GND and should be soldered to the PCB ground copper for thermal dissipation. |
| 4 | FB | input | Output voltage feedback control. Senses the regulated output voltage to complete the feedback loop. For the fixed 5.0V version this pin is tied directly to the output; internal reference VFB is 1.23V for the adjustable version. Absolute max -0.3V to +40V. |
| 5 | SD | input | ON/OFF shutdown control input. Pulling this pin below ~1.3V (VIL max 0.6V) turns the regulator ON; pulling it above ~1.3V (VIH min 2.0V, up to 40V max) shuts the regulator down, dropping standby current to approximately 150µA. Can be tied to GND or left open if shutdown is not used. |
| TAB | Metal Tab GND | power_in | Exposed metal tab on the TO263-5L package, internally connected to Gnd (pin 3). Serves as the primary thermal path and must be soldered to a copper ground pad on the PCB (recommended >=0.4 in², ideally 2+ in² of 2oz copper) for adequate heat dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | TO-263-5 |
| Category | PMIC |
| Pins | 6 |
Ordering variants
AP1501-50K5G-13AP1501-50K5G-1312K5G-13AP1501-50K5G-1333K5G-13AP1501-50K5G-13T5AP1501-50K5G-13T5R
CAD (KiCad official)
- Symbol:
AP1501-50K5G-13 - Footprint:
Package_TO_SOT_SMD:TO-263-5_TabPin6 - 3D model: TO-263-5 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (None pp, sha256
bafb5b2d2810633a, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).