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CJA1117B-5.0
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Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+46@@ -0,0 +1,46 @@+# CJA1117B-5.0++**Changjing** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3++CJA1117B-5.0 from Changjing, in a SOT-89-3. 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 for the fixed 5.0V regulator variant. On the adjustable variant this pin is labeled ADJ and connects to the external resistor divider setting VOUT. |+| 2 | OUTPUT | power_out | Regulated 5.0V output (4.9V to 5.1V over line/load). Supplies up to 1A continuous output current. Requires a 22uF tantalum output capacitor for stability. |+| 3 | IN | power_in | Unregulated input supply. Recommended operating range up to 15V (absolute max 20V). For 5.0V output requires VIN >= ~6.5V (dropout 1.15V typ at 1A). Bypass with 10uF tantalum. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | SOT-89-3 |+| Category | PMIC |+| Pins | 3 |++## Ordering variants++- `CJA1117B-5.05.0`+- `CJA1117B-5.0ADJ`+- `CJA1117B-5.01.8`+- `CJA1117B-5.02.5`+- `CJA1117B-5.03.3`++## CAD (KiCad official)++- Symbol: `CJA1117B-5.0`+- Footprint: `Package_TO_SOT_SMD:SOT-89-3`+- 3D model: SOT-89-3 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Changjing datasheet](docs/cja1117b-5-0-datasheet.pdf) (4 pp, sha256 `3bc76780b2acd26c`, 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/cja1117b-5-0-datasheet.pdf)
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