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CJ78D05
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Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+38@@ -0,0 +1,38 @@+# CJ78D05++**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2L++CJ78D05 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 | IN | power_in | Unregulated positive input voltage. Operating range 7.5 V to 25 V (absolute max 35 V). Bypass to GND with a 0.33 uF ceramic capacitor located close to the pin. |+| 2 | GND | power_in | Ground reference for both the input and output. Also electrically connected to the exposed tab of the TO-252 package (thermal pad). |+| 3 | OUT | power_out | Regulated +5 V output (4.8-5.2 V at 25 C, 5 mA to 1 A). Requires a 0.1 uF output capacitor to GND for stability. Continuous output current up to 1 A subject to thermal derating (PD = 1.25 W, RthetaJA = 80 C/W). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | TO-252-2L |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `CJ78D05`+- 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/cj78d05-datasheet.pdf) (4 pp, sha256 `736850389e63ebba`, 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/cj78d05-datasheet.pdf)
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