CJ7905

@@ -0,0 +1,38 @@+# CJ7905++**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2L++CJ7905 from Changjing, in a TO-252-2L. 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 | Ground/common return for the regulator. This is the reference for both input and output voltages and carries the quiescent current (~1.5 mA typical). |+| 2 | IN | power_in | Unregulated negative input voltage. Operating range -7 V to -25 V (absolute max -35 V). Requires a 2.2 uF input decoupling capacitor (Ci) to ground for stability. Electrically common with the metal tab of the TO-252-2L package. |+| 3 | OUT | power_out | Regulated -5 V output (-4.8 V to -5.2 V at 25 C). Supplies up to 1.5 A continuous (peak 2.1 A). Requires a 1 uF output capacitor (Co) to ground for stability. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | TO-252-2L |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `CJ7905`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252-2L (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Changjing datasheet](docs/cj7905-datasheet.pdf) (3 pp, sha256 `ee3cb70df3f20dbe`, 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/cj7905-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "cj7905",+  "version": "0.1.0",+  "type": "component",+  "description": "Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2L. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "pmic",+    "cj7905"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "cj7905.kicad_sym",+    "cj7905.kicad_mod",+    "cj7905.glb",+    "cj7905.step",+    "cj7905.lbr",+    "docs/hero.png",+    "docs/cj7905-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file