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CJ7812
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Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+38@@ -0,0 +1,38 @@+# CJ7812++**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2++CJ7812 from Changjing, in a TO-252-2. 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 | IN | power_in | Unregulated positive input voltage. Operating range 14.5 V to 30 V (absolute maximum 35 V) with respect to GND. Bypass with a 0.33 µF capacitor located as close as possible to the regulator for stability. |+| 2 | GND | power_in | Common ground reference for the input and output. On the TO-252-2L package this terminal is also fused to the exposed thermal tab (drain pad). |+| 3 | OUT | power_out | Regulated +12 V output (11.4 V to 12.6 V over temperature). Delivers up to 1.5 A peak with typical dropout of 2 V at 1.0 A. Bypass with a 0.1 µF capacitor for optimum transient response. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | TO-252-2 |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `CJ7812`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252-2 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Changjing datasheet](docs/cj7812-datasheet.pdf) (4 pp, sha256 `8c91d1a4faef8059`, retrieved 2026-08-17, tier: lcsc)+- **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/cj7812-datasheet.pdf)
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