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LM2937ET-12
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Texas Instruments 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 @@+# LM2937ET-12++**Texas Instruments** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220++LM2937ET-12 from Texas Instruments, in a TO-220. 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 | INPUT | power_in | Unregulated voltage input; the input must be at least VOUT + 1 V and no more than 26 V continuous, with 60 V transient protection for up to 100 ms. |+| 2 | GND | power_in | Ground pin, internally connected to the TAB, which must be connected to GND or left floating and must not be connected to any other potential. |+| 3 | OUTPUT | power_out | Regulated voltage output that requires an output capacitor to maintain stability; the device is stable for output capacitor ESR below 3 Ω. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | TO-220 |+| Category | Power Management (PMIC) |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `LM2937ET-12`+- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`+- 3D model: TO-220 (KiCad packages3D, STEP)+- 3D model files: `lm2937et-12-etched.step` / `lm2937et-12-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lm2937et-12.step` / `lm2937et-12.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/lm2937) (35 pp, sha256 `de6b9175f075271f`, retrieved 2026-10-08, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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).++[Datasheet PDF](docs/lm2937et-12-datasheet.pdf)
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