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CJ7809
Public Made by Adomby adom
Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+38@@ -0,0 +1,38 @@+# CJ7809++**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)++CJ7809 from Changjing, in a TO-252-2(DPAK). 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 supply. Accepts 11.5 V to 27 V for regulation (absolute max 35 V). Bypass with 0.33 µF close to the pin for stability. |+| 2 | GND | power_in | Common ground reference for input and output. On TO-252-2L this pin is fused to the exposed tab/heat slug. |+| 3 | OUT | power_out | Regulated +9 V output (8.65-9.35 V at 25 °C). Delivers up to 1 A continuous, 1.5 A peak. Bypass with 0.1 µF close to the pin for transient response. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | TO-252-2(DPAK) |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `CJ7809`+- Footprint: `Package_TO_SOT_SMD:TO-252-2`+- 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Changjing datasheet](docs/cj7809-datasheet.pdf) (4 pp, sha256 `0d92ef93a2dffde9`, 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/cj7809-datasheet.pdf)
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