CJ79L05

@@ -0,0 +1,38 @@+# CJ79L05++**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3L++CJ79L05 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 | GND | power_in | Ground reference. Common return for input and output; on SOT-89 this pin is also the thermal tab. |+| 2 | IN | power_in | Negative unregulated input voltage (Vi). Rated for -7 V to -20 V typical operating range, absolute maximum -30 V. Bypass with a 0.33 µF capacitor to GND close to the pin. |+| 3 | OUT | power_out | Regulated -5 V output (-4.75 V to -5.25 V over line/load/temperature). Delivers up to 100 mA (recommended operating 70 mA over full temp). Bypass with 0.1 µF capacitor to GND. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | SOT-89-3L |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `CJ79L05`+- 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/cj79l05-datasheet.pdf) (1 pp, sha256 `cea437b9974b333f`, 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/cj79l05-datasheet.pdf)

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