R5478N102CD-TR-FF

@@ -0,0 +1,46 @@+# R5478N102CD-TR-FF++**Ricoh Elec Devices** · Battery Management · SOT-23-6++R5478N102CD-TR-FF from Ricoh Elec Devices, in a SOT-23-6. 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 | DOUT | output | Discharge control output. CMOS output that switches low after the internally fixed delay when over-discharge or excess discharge-current is detected; drives the gate of the discharge-side external MOSFET. |+| 2 | V- | input | Charger negative input. Senses the negative terminal of the charger / load; used by the excess discharge-current and short-circuit detectors and for the output-delay-shortening function when pulled to VSS-2 V. |+| 3 | COUT | output | Charge control output. CMOS output that switches low after the internally fixed 1 s delay when over-charge is detected; drives the gate of the charge-side external MOSFET. |+| 4 | NC | unconnected | No connection. Leave floating or tie to a convenient net; not internally bonded. |+| 5 | VDD | power_in | Power supply pin and substrate voltage reference for the IC. Absolute maximum supply voltage is -0.3 V to 12 V (process tolerates up to 30 V transient); typically connected to the battery positive terminal through a series resistor. |+| 6 | VSS | power_in | Ground reference for the IC. All voltages in the datasheet are referred to VSS = 0 V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Ricoh Elec Devices |+| Package | SOT-23-6 |+| Category | PMIC |+| Pins | 6 |++## Ordering variants++- `R5478N102CD-TR-FF`+- `R5478N102CD-TR-FFR5475N`++## CAD (KiCad official)++- Symbol: `R5478N102CD-TR-FF`+- Footprint: `Package_TO_SOT_SMD:SOT-23-6`+- 3D model: SOT-23-6 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Ricoh Elec Devices datasheet](docs/r5478n102cd-tr-ff-datasheet.pdf) (27 pp, sha256 `e02e7c3c39eec61e`, 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/r5478n102cd-tr-ff-datasheet.pdf)

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