component
LM317T-DG
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+39@@ -0,0 +1,39 @@+# LM317T-DG++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220++LM317T-DG from STMicroelectronics, in a TO-220. 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 | ADJ | input | Adjustment terminal: provides 1.25 V internal reference voltage for external resistor-divider feedback network; typical adjustment pin current 50-100 µA for setting output voltage between 1.2-37 V. |+| 2 | OUT | power_out | Regulated output voltage terminal adjustable from 1.2 to 37 V via external resistor divider; maximum output current 1.5-2.2 A when VI-VO ≤ 40 V and power dissipation ≤ 20 W; minimum load current 3.5-10 mA. |+| 3 | IN | power_in | Unregulated input supply voltage terminal; input-to-output differential voltage VI-VO must not exceed 40 V absolute maximum rating; operating differential range 3-40 V for electrical characteristics. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | TO-220 |+| Category | Power Management (PMIC) |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `LM317T-DG`+- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`+- 3D model: TO-220 (KiCad packages3D, STEP)+- 3D model files: `lm317t-dg-etched.step` / `lm317t-dg-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm317t-dg.step` / `lm317t-dg.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588886954125496320) (25 pp, sha256 `282eaff4ac2fa575`, retrieved 2026-09-18, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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/lm317t-dg-datasheet.pdf)
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