CJ432

@@ -0,0 +1,38 @@+# CJ432++**Changjing** · Voltage Reference · SOT-23++CJ432 from Changjing, in a SOT-23. 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 | REF | input | Reference input pin. Voltage on this pin (1.2214-1.2586V, typ 1.24V) is compared internally against the bandgap reference; regulates the shunt when Vref threshold is exceeded. Reference input current is on the order of hundreds of nA (max 6μA over range). |+| 2 | CATHODE | passive | Cathode (K) of the shunt regulator. Sinks current from the load when Vref exceeds the internal bandgap. Max continuous cathode current 100mA, max cathode voltage 18V, dynamic impedance 0.5Ω typ. |+| 3 | ANODE | passive | Anode (A) of the shunt regulator. Normally tied to circuit ground / low-side return; forms the current return path for the shunt element. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Changjing |+| Package | SOT-23 |+| Category | PMIC |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `CJ432`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Changjing datasheet](docs/cj432-datasheet.pdf) (7 pp, sha256 `6ff031d80f2f1bfd`, 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/cj432-datasheet.pdf)

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