component
CJ78L05
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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+38@@ -0,0 +1,38 @@+# CJ78L05++**Jiangsu Changjing Electronics Technology Co Ltd** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3L++CJ78L05 from Jiangsu Changjing Electronics Technology Co Ltd, in a SOT-89-3L. Pinout and pin descriptions extracted from the datasheet (via LCSC) by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | OUT | power_out | Regulated +5 V output. Nominal 5.0 V (4.75 V to 5.25 V over full load/line). Recommend 0.1 uF ceramic bypass capacitor close to the pin for transient response. |+| 2 | GND | power_in | Common ground return for input and output. Also acts as the package heatsink tab (SOT-89 large center pad) for thermal dissipation. |+| 3 | IN | power_in | Unregulated DC input. Recommended operating range 7 V to 20 V; absolute maximum 30 V. Requires 0.33 uF bypass capacitor close to the pin when the regulator is far from the input filter. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Jiangsu Changjing Electronics Technology Co Ltd |+| Package | SOT-89-3L |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `CJ78L05`+- 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:** [Jiangsu Changjing Electronics Technology Co Ltd datasheet](https://datasheet.lcsc.com/datasheet/pdf/ea0e9b578985407cad631aab42cca161.pdf) (4 pp, sha256 `7bd7279ca9a27801`, 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/cj78l05-datasheet.pdf)
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