component
LM317MDCYR
Public Made by Adomby adom
Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+41@@ -0,0 +1,41 @@+# LM317MDCYR++**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-4++LM317MDCYR from Texas Instruments, in a SOT-223-4. 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 | input | Output feedback voltage input; internally regulates OUTPUT to 1.25V above this pin, and can be bypassed with a capacitor for ripple rejection. |+| 2 | OUTPUT | power_out | Regulated output voltage pin; place the output capacitor (per Recommended Operating Conditions) as close as possible to this pin and the COMMON node. |+| 3 | INPUT | power_in | Input supply voltage, 2.5V to 37V relative to the OUTPUT pin; place the input capacitor (per Recommended Operating Conditions) as close as possible to this pin and the COMMON node. |+| 4 | OUTPUT | power_out | Package tab/lead shown in the pin diagram as OUTPUT (electrically common with pin 2), used for mechanical mounting and heat dissipation on the 4-pin SOT-223 (DCY) package. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOT-223-4 |+| Category | Power Management (PMIC) |+| Pins | 4 |++## CAD (KiCad official)++- Symbol: `LM317MDCYR`+- Footprint: `Package_TO_SOT_SMD:SOT-223`+- 3D model: SOT-223-4 (KiCad packages3D, STEP)+- 3D model files: `lm317mdcyr-etched.step` / `lm317mdcyr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm317mdcyr.step` / `lm317mdcyr.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/lm317m) (32 pp, sha256 `3d54e2356594bb30`, retrieved 2026-09-23, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-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/lm317mdcyr-datasheet.pdf)
page.jsonadded+120@@ -0,0 +1,120 @@+{+ "slug": "lm317mdcyr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-4. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "power management (pmic)",+ "lm317mdcyr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "lm317mdcyr.kicad_sym",+ "lm317mdcyr.kicad_mod",+ "lm317mdcyr.glb",+ "lm317mdcyr.step",+ "lm317mdcyr.lbr",+ "docs/hero.png",+ "docs/lm317mdcyr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "LM317MDCYR",+ "manufacturer": "Texas Instruments",+ "package": "SOT-223-4",+ "pin_count": 4,+ "category": "Power Management (PMIC)",+ "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",+ "datasheet": "https://www.ti.com/cn/lit/gpn/lm317m",+ "parts": {+ "symbol": "lm317mdcyr.kicad_sym",+ "footprint": "lm317mdcyr.kicad_mod",+ "model_3d": "lm317mdcyr-etched.glb",+ "model_3d_plain": "lm317mdcyr.glb",+ "model_3d_step": "lm317mdcyr-etched.step",+ "model_3d_step_plain": "lm317mdcyr.step",+ "lbr": "lm317mdcyr.lbr"+ },+ "distributor_links": {+ "lcsc": "C840113"+ },+ "pins": [+ {+ "number": "1",+ "name": "ADJUST",+ "type": "input",+ "description": "Output feedback voltage input; internally regulates OUTPUT to 1.25V above this pin, and can be bypassed with a capacitor for ripple rejection."+ },+ {+ "number": "2",+ "name": "OUTPUT",+ "type": "power_out",+ "description": "Regulated output voltage pin; place the output capacitor (per Recommended Operating Conditions) as close as possible to this pin and the COMMON node."+ },+ {+ "number": "3",+ "name": "INPUT",+ "type": "power_in",+ "description": "Input supply voltage, 2.5V to 37V relative to the OUTPUT pin; place the input capacitor (per Recommended Operating Conditions) as close as possible to this pin and the COMMON node."+ },+ {+ "number": "4",+ "name": "OUTPUT",+ "type": "power_out",+ "description": "Package tab/lead shown in the pin diagram as OUTPUT (electrically common with pin 2), used for mechanical mounting and heat dissipation on the 4-pin SOT-223 (DCY) package."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-5",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Pin 4 function is not documented in the datasheet. The package is specified as 4-pin SOT-223-4, but ",+ "exposed pad 4 added from the footprint"+ ],+ "pages_sent": 32,+ "cost_usd": 0.343,+ "at": "2026-09-23T04:53:30"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/lm317m",+ "pages": 32,+ "sha256": "3d54e2356594bb30",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 4,+ "described": 4,+ "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]"+ }+}