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LD1117DT50TR

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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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Datasheet

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Contents

README

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LD1117DT50TR

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

LD1117DT50TR 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 reference. Return path for the regulator's quiescent current; the fixed output voltage is developed relative to this pin.
2 VOUT power_out Regulated 5.0 V fixed output. Supplies up to 800 mA continuous with 1 V typical dropout. Requires a minimum 10 µF capacitor to ground for stability. Electrically tied to the exposed DPAK tab.
3 VIN power_in Unregulated DC input supply. Recommended operating range is VOUT + dropout up to 15 V (18 V absolute max when IOUT < 20 mA). A 100 nF input decoupling capacitor is recommended close to the pin.
TAB VOUT power_out Exposed thermal tab, electrically connected to VOUT. Used for heat sinking to reduce thermal resistance junction-to-ambient.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • LD1117DT50TR
  • LD1117DT50TRS50TR
  • LD1117DT50TRS50
  • LD1117DT50TRD50TR
  • LD1117DT50TRD50
  • LD1117DT50TRV50

CAD (KiCad official)

  • Symbol: LD1117DT50TR
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)

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