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3D Model

Contents

Pinout
Key specifications
Ordering variants
CAD (KiCad official)
Provenance

README

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LD1117DT12TR

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

LD1117DT12TR from STMicroelectronics, in a 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 return. Sets the reference for the fixed 1.2 V output; for best load regulation, keep this return short and Kelvin-connected to the load ground.
2	VOUT	power_out	Regulated 1.2 V output (1.140-1.260 V over line/load, ±1% at 25 °C). Supplies up to 800 mA (typ. 950 mA current limit). Requires a 10 µF minimum output capacitor for loop stability; electrically tied to the DPAK TAB.
3	VIN	power_in	Unregulated DC input, 15 V absolute max (18 V max when IOUT < 20 mA). Must be at least VOUT + Vd (Vd ≈ 1.0 V typ., 1.2 V max at 800 mA). A 100 nF input decoupling capacitor is recommended near the pin.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	DPAK
Category	PMIC
Pins	3

Ordering variants

LD1117DT12TR
LD1117DT12TRLD1117DT12CTR
LD1117DT12TRLD1117S12TR
LD1117DT12TRLD1117S12CTR
LD1117DT12TRLD1117V33
LD1117DT12TRLD1117V50
LD1117DT12TRLD1117V
LD1117DT12TRLD1117D33TR
LD1117DT12TRLD1117D33CTR

CAD (KiCad official)

Symbol: LD1117DT12TR
Footprint: Package_TO_SOT_SMD:TO-252-2
3D model: DPAK (KiCad packages3D, STEP)

Provenance

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

Datasheet: STMicroelectronics datasheet (None 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint