component

AP1501-3.3

Public Made by Adom

by adom

UMW DC-DC Converters, TO-263-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs ap1501-3-3: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STE… · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
ap1501-3-3-etched.fit.json ap1501-3-3: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ap1501-3-3-etched.glb ap1501-3-3: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STE… · Ray
ap1501-3-3-etched.step ap1501-3-3: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STE… · Ray
ap1501-3-3.glb fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
ap1501-3-3.kicad_mod revert footprint to TO-263-5_TabPin6: the symbol pin count that justified the swap disagrees with the package, so the s… · Ray
ap1501-3-3.kicad_sym Publish 0.1.0 · Ray
ap1501-3-3.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
ap1501-3-3.step fix footprint: TO-263-2 -> TO-263-5_TabPin6 (pad_count, 5 pins) · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json ap1501-3-3: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STE… · Ray
README.md ap1501-3-3: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

AP1501-3.3

UMW · DC-DC Converters · TO-263-5

AP1501-3.3 from UMW, 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 (4.5V to 40V operating, 45V abs max). A suitable input bypass capacitor (e.g. 680µF) must be present at this pin to minimize voltage transients and supply the switching currents needed by the regulator.
2 Output output Internal switch node. The voltage at this pin switches between (+VIN − VSAT) and approximately −0.5V, with a duty cycle of approximately VOUT/VIN. Drives the external inductor and catch diode. To minimize coupling to sensitive circuitry, the PC board copper area connected to this pin should be kept to a minimum. Rated to deliver 3A load current.
3 GND power_in Circuit ground / power return.
4 Feedback input Output voltage feedback input. Senses the regulated output voltage to close the internal feedback loop. On the fixed 3.3V version this pin connects directly to the output rail (internal divider sets 3.3V nominal). Abs max −0.3V to +40V.
5 ON/OFF input TTL-level shutdown input, active-high (active is 'Low' or floating for ON). Pulling this pin below ~1.3V (or leaving it open/tied to GND) turns the regulator ON; pulling above ~1.3V (up to 25V) shuts the regulator down, dropping quiescent current to ~80µA. Abs max −0.3V to +40V.

Key specifications

Parameter Value
Manufacturer UMW
Package TO-263-5
Category PMIC
Pins 5

Ordering variants

  • AP1501-3.3T5L
  • AP1501-3.3D2T

CAD (KiCad official)

  • Symbol: AP1501-3.3
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: TO-263-5 (KiCad packages3D, STEP)
  • 3D model files: ap1501-3-3-etched.step / ap1501-3-3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ap1501-3-3.step / ap1501-3-3.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ap1501-3-3.step 180 KB You want the bare part, or you mark your own boards.
ap1501-3-3-etched.step 1.8 MB You want the part with AP1501-3.3 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 498 faces against 135 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: UMW datasheet (28 pp, sha256 d716270a9a304615, retrieved 2026-08-17, tier: lcsc)
  • 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).

Datasheet PDF