component

LD1117DT50CTR

Public Unreviewed

by Ray

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Contents

README

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LD1117DT50CTR

STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)

LD1117DT50CTR from STMicroelectronics, in a TO-252-2(DPAK). 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 Device ground / common return. Reference for both the input and the fixed 5.0 V output.
2 VOUT power_out Regulated 5.0 V output, up to 800 mA. Requires a 10 µF minimum output capacitor for loop stability. Electrically common with the exposed TAB.
3 VIN power_in Unregulated DC input. Absolute maximum 15 V continuous (18 V when IOUT < 20 mA). Typical dropout 1 V at full load; a 100 nF input capacitor is recommended.
TAB VOUT power_out Metal heat-sink tab, internally connected to VOUT. Used for thermal dissipation to the PCB copper pour; carries the regulated output potential and must not be tied to ground.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package TO-252-2(DPAK)
Category PMIC
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • LD1117DT50CTR
  • LD1117DT50TR
  • LD1117DT12TR
  • LD1117DT18TR
  • LD1117DT25TR
  • LD1117DT33TR
  • LD1117DTTR
  • LD1117S50TR
  • LD1117S33TR
  • LD1117S25TR
  • LD1117S18TR
  • LD1117S12TR
  • LD1117STR
  • LD1117D50TR
  • LD1117D33TR
  • LD1117D25TR
  • LD1117D18TR
  • LD1117D12TR
  • LD1117DTR
  • LD1117V50
  • LD1117V33
  • LD1117V25
  • LD1117V18
  • LD1117V12
  • LD1117V

CAD (KiCad official)

  • Symbol: LD1117DT50CTR
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ld1117dt50ctr.step 119 KB You want the bare part, or you mark your own boards.
ld1117dt50ctr-etched.step 1.8 MB You want the part with LD1117DT50CTR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 486 faces against 83 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: STMicroelectronics datasheet (44 pp, sha256 1b80923ec6ca9161, 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).

Datasheet PDF