CJ9112T6A

@@ -0,0 +1,46 @@+# CJ9112T6A++**Changjing** · DC-DC Converters · SOT-23-6L++CJ9112T6A from Changjing, in a SOT-23-6L. 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 | SW | passive | Switch node. Drain of the internal N-channel boost switch and source of the synchronous P-channel rectifier. Connects to the external boost inductor (typ. 4.7 µH) whose other end ties to VIN. Rated -0.3 V to 6 V. |+| 2 | GND | power_in | Device ground and reference for all internal voltages. Tie directly to the system ground plane close to the input and output capacitor return terminals. |+| 3 | VFB | input | Feedback voltage input to the internal error amplifier. Connects to the mid-point of an external resistor divider from VOUT to GND. Regulated to VFB = 1.215 V (typ., 1.179 V-1.251 V). Feedback input bias current is ~10 nA. |+| 4 | EN | input | Enable control input. Logic high (>=70% of VIN) turns the converter on; logic low (<=20% of VIN) puts the device into shutdown. In shutdown the 'A' variant provides true load disconnect (VOUT = 0 V). EN input leakage ~5 nA at VEN=5 V. Do not float. |+| 5 | VOUT | power_out | Boost converter output and sense pin for the internal synchronous P-channel rectifier. Adjustable 1.8 V to 5.5 V via external feedback divider. Requires an external output capacitor (typ. 10 µF ceramic). Also supplies internal circuitry once VOUT > VIN. |+| 6 | VIN | power_in | Input supply pin (battery input). Operating range 0.82 V to 5.5 V after start-up (start-up threshold 0.82 V @ 1 mA load; minimum operating 0.65 V). Absolute maximum 6 V. Bypass with a local ceramic capacitor (typ. 4.7 µF). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | SOT-23-6L |+| Category | PMIC |+| Pins | 6 |++## Ordering variants++- `CJ9112T6A`+- `CJ9112T6ACJ9112T6B`++## CAD (KiCad official)++- Symbol: `CJ9112T6A`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6L (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Changjing datasheet](docs/cj9112t6a-datasheet.pdf) (9 pp, sha256 `1fbd0a963e871d48`, 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/cj9112t6a-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "cj9112t6a",+  "version": "0.1.0",+  "type": "component",+  "description": "Changjing DC-DC Converters, SOT-23-6L. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "pmic",+    "cj9112t6a"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "cj9112t6a.kicad_sym",+    "cj9112t6a.kicad_mod",+    "cj9112t6a.glb",+    "cj9112t6a.step",+    "cj9112t6a.lbr",+    "docs/hero.png",+    "docs/cj9112t6a-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file