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78L15

UMW · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

78L15 from UMW, in a SOT-89. 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 OUTPUT power_out Regulated +15V output, up to 100 mA. Recommended output capacitor Co = 0.1 µF ceramic to ground for stability.
2 GND power_in Common ground reference for input and output. Carries the quiescent current (typ 2.2 mA, max 6 mA for 78L15).
3 INPUT power_in Unregulated DC input. Absolute maximum Vi = 35 V. Recommended input capacitor C1 = 0.33 µF to ground if the regulator is located far from the power-supply filter.

Key specifications

Parameter Value
Manufacturer UMW
Package SOT-89
Category PMIC
Pins 3

CAD (KiCad official)

  • Symbol: 78L15
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
78l15.step 57 KB You want the bare part, or you mark your own boards.
78l15-etched.step 896 KB You want the part with 78L15 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 243 faces against 42 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 (22 pp, sha256 3eeae843c9f51425, 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