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CJ78M12
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Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+38@@ -0,0 +1,38 @@+# CJ78M12++**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)++CJ78M12 from Changjing, in a TO-252-2(DPAK). 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 input voltage. Absolute maximum 35V; recommended operating range 14.5V to 30V. Bypass to GND with a 0.33uF ceramic capacitor close to the pin. |+| 2 | GND | power_in | Common ground reference for both input and output. On the TO-252-2L variant this pin is fused to the exposed tab/heat sink. |+| 3 | OUT | power_out | Regulated +12V output. Nominal 12V (11.4-12.6V over full temperature range); supplies up to 0.5A peak (0.7A internal current limit). Requires a 0.1uF output capacitor to GND for stability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | TO-252-2(DPAK) |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `CJ78M12`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Changjing datasheet](docs/cj78m12-datasheet.pdf) (1 pp, sha256 `235ab67f614603e6`, 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/cj78m12-datasheet.pdf)
page.jsonadded+34@@ -0,0 +1,34 @@+{+ "slug": "cj78m12",+ "version": "0.1.0",+ "type": "component",+ "description": "Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "pmic",+ "cj78m12"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "cj78m12.kicad_sym",+ "cj78m12.kicad_mod",+ "cj78m12.glb",+ "cj78m12.step",+ "cj78m12.lbr",+ "docs/hero.png",+ "docs/cj78m12-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "visibility": "public",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}