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LD1117-5.0

Public Unreviewed

by Ray

UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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LD1117-5.0

UMW · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

LD1117-5.0 from UMW, in a SOT-223. 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 GND power_in Ground reference for the regulator. On the fixed-output LD1117-5.0 the ADJ/GND pin is internally tied to the bandgap divider (F1/F2 closed, A open) so it functions as the device GND return. Connect directly to system ground.
2 VOUT power_out Regulated 5.0V output. Typical accuracy ±2% (4.900V min / 5.100V max at IOUT=10mA, VIN=7V, TJ=25°C). Supplies up to 1A load current; requires an output capacitor for stability (see datasheet application section).
3 VIN power_in Unregulated input supply. Must exceed VOUT by at least the dropout voltage (typ. 1.2V @ 1A). Absolute max 18V; recommended operating VIN ≤ 12V. Decouple with an input capacitor close to the pin.

Key specifications

Parameter Value
Manufacturer UMW
Package SOT-223
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • LD1117-5.0
  • LD1117-5.0CD-5.0
  • LD1117-5.0S-5.0

CAD (KiCad official)

  • Symbol: LD1117-5.0
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ld1117-5-0.step 64 KB You want the bare part, or you mark your own boards.
ld1117-5-0-etched.step 1.2 MB You want the part with LD1117-5.0 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 330 faces against 75 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 (14 pp, sha256 b65a8249b6e9e313, 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