component
LM317MDT
Public Made by Adomby adom
UMW Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownLM317MDT
UMW · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252
LM317MDT from UMW, 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 | Adjust | input | Voltage adjustment input connected to external resistor divider network to set output voltage (1.2 V to 37 V); adjustment pin current 2.2 µA typical, 3.5 µA maximum. |
| 2 | Output | power_out | Regulated output voltage adjustable from 1.2 V to 37 V with maximum output current 1.5 A. |
| 3 | Input | power_in | Unregulated input voltage supply; input-to-output voltage differential VI-VO must be 3 V to 40 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | TO-252 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LM317MDT - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252 (KiCad packages3D, STEP)
- 3D model files:
lm317mdt-etched.step/lm317mdt-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm317mdt.step/lm317mdt.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (10 pp, sha256
49a97f94a437a75f, retrieved 2026-09-29, tier: lcsc) - 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).