component
CJ78L09
Public Made by Adomby adom
Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+44@@ -0,0 +1,44 @@+# CJ78L09++**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3L++CJ78L09 from Changjing, in a SOT-89-3L. 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 | OUT | power_out | Regulated 9.0V output (tolerance ±3% at TJ=25°C, ±5% over operating TJ). Rated for >100mA. Requires ~0.1µF ceramic bypass capacitor to GND. |+| 2 | GND | power_in | Regulator ground / common reference for input and output. |+| 3 | IN | power_in | Unregulated DC input to the device. Maximum VIN = 30V for the CJ78L09 variant. Requires a ~0.33µF ceramic bypass capacitor to GND when the device is more than a few inches from the input filter. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | SOT-89-3L |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `CJ78L09`+- `CJ78L09`+- `CJ78L09-TA`++## CAD (KiCad official)++- Symbol: `CJ78L09`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89-3L (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Changjing datasheet](docs/cj78l09-datasheet.pdf) (32 pp, sha256 `9262a4d45d64c12c`, 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/cj78l09-datasheet.pdf)
page.jsonadded+34@@ -0,0 +1,34 @@+{+ "slug": "cj78l09",+ "version": "0.1.0",+ "type": "component",+ "description": "Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3L. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "pmic",+ "cj78l09"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "cj78l09.kicad_sym",+ "cj78l09.kicad_mod",+ "cj78l09.glb",+ "cj78l09.step",+ "cj78l09.lbr",+ "docs/hero.png",+ "docs/cj78l09-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "visibility": "public",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}