DW02CA.

@@ -0,0 +1,41 @@+# DW02CA.++**Shenzhen Fuman** · Battery Management · SOT-23-5++DW02CA. from Shenzhen Fuman, in a SOT-23-5. 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 | NC | unconnected | No connection. Leave floating on the PCB. |+| 2 | GND | power_in | Power/reference ground. Connect to the negative terminal of the Li-ion cell. All internal detection thresholds are referenced to this pin. |+| 3 | VDD | power_in | Power supply input, connected to the positive terminal of the Li-ion cell (typ. through a ~100 Ω series resistor R1). Operating range 1.5 V to 10 V; absolute-max -0.3 V to +10 V. Used to sense cell voltage for OV-charge (VOC=4.30 V) and OV-discharge (VOD=2.44 V) thresholds. |+| 4 | VM | bidirectional | Charge/discharge current sense input, tied to pack negative terminal (P-). Voltage across the internal N-MOSFET (VM to GND) is compared against overcurrent-discharge (VEDI), overcurrent-charge (VECI), short-circuit (VSHORT ~18 A) and charger-detect (VCHG=-0.5 V) thresholds. Allowed input range VDD-6 V to VDD+0.3 V. Pin 4 is internally tied to pin 5. |+| 5 | VM | bidirectional | Charge/discharge current sense input, tied to pack negative terminal (P-). Internally connected to pin 4. Same electrical function and limits as pin 4. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Shenzhen Fuman |+| Package | SOT-23-5 |+| Category | PMIC |+| Pins | 5 |++## CAD (KiCad official)++- Symbol: `DW02CA.`+- Footprint: `Package_TO_SOT_SMD:SOT-23-5`+- 3D model: SOT-23-5 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Shenzhen Fuman datasheet](docs/dw02ca-datasheet.pdf) (6 pp, sha256 `b129889242cdd15b`, retrieved 2026-08-17, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **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/dw02ca-datasheet.pdf)

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