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LR1117DDX
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LRC Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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LR1117DDX
LRC · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252
LR1117DDX from LRC, in a TO-252. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Gnd | power_in | Pin 1 is Gnd (ground) on the fixed-voltage versions and Adj (adjustable feedback node, 1.25V reference) on the LR1117-ADJ version, so the exact function depends on which variant the MPN selects. |
| 2 | Vout | power_out | Regulated output: fixed versions of 1.2V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V at ±2%, or adjustable 1.25V to 12V, with a maximum output current of 1.4A. |
| 3 | Vin | power_in | Input supply, with a recommended input voltage range of at most 15V and a minimum 1 µF-class input capacitor (10 µF tantalum recommended) required for stability. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | TO-252 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LR1117DDX - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
lr1117ddx-etched.step/lr1117ddx-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lr1117ddx.step/lr1117ddx.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (9 pp, sha256
67c0164382c5206c, retrieved 2026-10-10, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).
# LR1117DDX
**LRC** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252
LR1117DDX from LRC, in a TO-252. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
## Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | Gnd | power_in | Pin 1 is Gnd (ground) on the fixed-voltage versions and Adj (adjustable feedback node, 1.25V reference) on the LR1117-ADJ version, so the exact function depends on which variant the MPN selects. |
| 2 | Vout | power_out | Regulated output: fixed versions of 1.2V, 1.8V, 2.5V, 2.85V, 3.3V and 5.0V at ±2%, or adjustable 1.25V to 12V, with a maximum output current of 1.4A. |
| 3 | Vin | power_in | Input supply, with a recommended input voltage range of at most 15V and a minimum 1 µF-class input capacitor (10 µF tantalum recommended) required for stability. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | TO-252 |
| Category | Power Management (PMIC) |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `LR1117DDX`
- Footprint: `Package_TO_SOT_SMD:TO-252-2`
- 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files: `lr1117ddx-etched.step` / `lr1117ddx-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lr1117ddx.step` / `lr1117ddx.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [LRC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603169009131143168) (9 pp, sha256 `67c0164382c5206c`, retrieved 2026-10-10, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).
[Datasheet PDF](docs/lr1117ddx-datasheet.pdf)