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L7912CV-DG
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STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+45@@ -0,0 +1,45 @@+# L7912CV-DG++**STMicroelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220++L7912CV-DG from STMicroelectronics, in a TO-220. 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 | GND | power_in | Common / ground reference. For a negative regulator this is the return that sits above both the negative input (VI) and negative output (VO). |+| 2 | IN | power_in | Negative unregulated input supply. Absolute maximum -35 V for VO = -5 to -18 V variants (covers L7912). Requires an input capacitor (CI = 2.2 uF per test circuit) close to the pin for stability. |+| 3 | OUT | power_out | Regulated -12 V output, sourcing up to 1.5 A with adequate heatsinking. Requires an output capacitor (CO = 1 uF per test circuit) to guarantee transient response and stability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | STMicroelectronics |+| Package | TO-220 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `L7912CV-DGL7912CV`+- `L7912CV-DG`+- `L7912CV-DGL7912CP`+- `L7912CV-DGL7912CD2T-TR`++## CAD (KiCad official)++- Symbol: `L7912CV-DG`+- Footprint: `Package_TO_SOT_THT:TO-220-3_Vertical`+- 3D model: TO-220 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/l7912cv-dg.pdf) (24 pp, sha256 `68ee756997bb737a`, retrieved 2026-08-17, tier: manufacturer)+- **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).++[Datasheet PDF](docs/l7912cv-dg-datasheet.pdf)
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