# LM317L

**HTC Korea TAEJIN Tech** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-92-3

LM317L from HTC Korea TAEJIN Tech, in a TO-92-3. 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 | ADJ | passive | Adjustment terminal that sets the output voltage; the datasheet gives an adjustable pin current of 46 µA typical and 100 µA maximum. |
| 2 | VOUT | power_out | Regulated output, adjustable from 1.2 V to 37 V, supplying more than 100 mA of load current. |
| 3 | VIN | power_in | Unregulated input; the datasheet specifies regulation with an input-output differential of 3 V to 40 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HTC Korea TAEJIN Tech |
| Package | TO-92-3 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `LM317L`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files: `lm317l-etched.step` / `lm317l-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm317l.step` / `lm317l.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HTC Korea TAEJIN Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588892404057718784) (3 pp, sha256 `196a12c8af2e7f1b`, retrieved 2026-10-09, 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/lm317l-datasheet.pdf)