component
LM317D2T-TR
Public Made by Adomby adom
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-2. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+39@@ -0,0 +1,39 @@+# LM317D2T-TR++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263-2++LM317D2T-TR from STMicroelectronics, in a TO-263-2. 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 | ADJUST | bidirectional | Adjustment terminal that sets the constant 1.25 V reference across external resistor R1; draws a typical 50 µA (max 100 µA) adjustment-pin current with only 0.2-5 µA change over line/load, used with an external resistor divider to program VO = VREF(1+R2/R1) + IADJ·R2. |+| 2 | OUTPUT | power_out | Regulated output terminal, internally referenced 1.25 V (1.2-1.3 V typ) above the ADJUST pin; delivers output current in excess of 1.5 A (up to 2.2 A max for VI-VO ≤15 V) and is electrically the same net as the package tab used for heat-sinking. |+| 3 | INPUT | power_in | Unregulated input supply terminal; the input-to-output differential voltage (VI-VO) must not exceed the 40 V absolute maximum rating, with electrical characteristics specified at VI-VO = 5 V and a 2.5-40 V operating differential range. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | TO-263-2 |+| Category | Power Management (PMIC) |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `LM317D2T-TR`+- Footprint: `Package_TO_SOT_SMD:TO-263-2`+- 3D model: TO-263-2 (KiCad packages3D, STEP)+- 3D model files: `lm317d2t-tr-etched.step` / `lm317d2t-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm317d2t-tr.step` / `lm317d2t-tr.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/8586202517663727616) (25 pp, sha256 `6c20f995e97f5cb4`, retrieved 2026-09-23, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-sonnet-5` (text+vision), consensus `claude-opus-4-8` (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/lm317d2t-tr-datasheet.pdf)
page.jsonadded+114@@ -0,0 +1,114 @@+{+ "slug": "lm317d2t-tr",+ "version": "0.1.0",+ "type": "component",+ "description": "STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-2. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lm317d2t-tr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm317d2t-tr.kicad_sym",+ "lm317d2t-tr.kicad_mod",+ "lm317d2t-tr.glb",+ "lm317d2t-tr.step",+ "lm317d2t-tr.lbr",+ "docs/hero.png",+ "docs/lm317d2t-tr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LM317D2T-TR",+ "manufacturer": "STMicroelectronics",+ "package": "TO-263-2",+ "pin_count": 3,+ "category": "Power Management (PMIC)",+ "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",+ "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586202517663727616",+ "parts": {+ "symbol": "lm317d2t-tr.kicad_sym",+ "footprint": "lm317d2t-tr.kicad_mod",+ "model_3d": "lm317d2t-tr-etched.glb",+ "model_3d_plain": "lm317d2t-tr.glb",+ "model_3d_step": "lm317d2t-tr-etched.step",+ "model_3d_step_plain": "lm317d2t-tr.step",+ "lbr": "lm317d2t-tr.lbr"+ },+ "distributor_links": {+ "lcsc": "C91673"+ },+ "pins": [+ {+ "number": "1",+ "name": "ADJUST",+ "type": "bidirectional",+ "description": "Adjustment terminal that sets the constant 1.25 V reference across external resistor R1; draws a typical 50 µA (max 100 µA) adjustment-pin current with only 0.2-5 µA change over line/load, used with an external resistor divider to program VO = VREF(1+R2/R1) + IADJ·R2."+ },+ {+ "number": "2",+ "name": "OUTPUT",+ "type": "power_out",+ "description": "Regulated output terminal, internally referenced 1.25 V (1.2-1.3 V typ) above the ADJUST pin; delivers output current in excess of 1.5 A (up to 2.2 A max for VI-VO ≤15 V) and is electrically the same net as the package tab used for heat-sinking."+ },+ {+ "number": "3",+ "name": "INPUT",+ "type": "power_in",+ "description": "Unregulated input supply terminal; the input-to-output differential voltage (VI-VO) must not exceed the 40 V absolute maximum rating, with electrical characteristics specified at VI-VO = 5 V and a 2.5-40 V operating differential range."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-sonnet-5",+ "primary_mode": "text+vision",+ "consensus_model": "claude-opus-4-8",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Figure 1 (page 3) shows the D²PAK pin diagram only with pin NAMES (INPUT, OUTPUT, ADJUST) and the ta; Electrical characteristics tables (pages 7-8) describe VREF as measured 'between pin 3 and pin 1' fo",+ "vision extraction: provenance cannot be text-verified; needs consensus"+ ],+ "pages_sent": 25,+ "cost_usd": 0.548,+ "at": "2026-09-23T00:59:41"+ },+ "datasheet": {+ "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586202517663727616",+ "pages": 25,+ "sha256": "6c20f995e97f5cb4",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 3,+ "described": 3,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}