component
LM317DCYR-JSM
Public Made by Adomby adom
JSMSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout cross-checked by two models 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
markdownLM317DCYR-JSM
JSMSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223
LM317DCYR-JSM from JSMSEMI, in a SOT-223. 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 | Adjust pin that sets the output voltage through the R1/R2 divider (VOUT = VREF x (1+R2/R1) + IADJ x R2, VREF 1.20 to 1.30 V), with adjust pin current typically 50 µA and 100 µA max. |
| 2 | OUTPUT | power_out | Regulated output, adjustable from 1.25 V to 37 V and supplying over 1 A, with internal short-circuit and over-temperature protection. |
| 3 | INPUT | power_in | Unregulated supply input, where the input-to-output voltage difference (Vin-Vout) must not exceed 37 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | SOT-223 |
| Category | Power Management (PMIC) |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
LM317DCYR-JSM - Footprint:
Package_TO_SOT_SMD:SOT-223-3_TabPin2 - 3D model: SOT-223 (KiCad packages3D, STEP)
- 3D model files:
lm317dcyr-jsm-etched.step/lm317dcyr-jsm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lm317dcyr-jsm.step/lm317dcyr-jsm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JSMSEMI datasheet (8 pp, sha256
07e6916234059f3d, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(vision), consensusclaude-opus-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).