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R5478N102CD-TR-FF

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Ricoh Elec Devices Battery Management, SOT-23-6. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs r5478n102cd-tr-ff: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers r5478n102cd-tr-ff: viewers · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 11d ago
r5478n102cd-tr-ff-etched.fit.json r5478n102cd-tr-ff: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
r5478n102cd-tr-ff-etched.glb r5478n102cd-tr-ff: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
r5478n102cd-tr-ff-etched.step r5478n102cd-tr-ff: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
r5478n102cd-tr-ff.glb Publish 0.1.0 · Ray 1mo ago
r5478n102cd-tr-ff.kicad_mod Publish 0.1.0 · Ray 1mo ago
r5478n102cd-tr-ff.kicad_sym Publish 0.1.0 · Ray 1mo ago
r5478n102cd-tr-ff.lbr Publish 0.1.0 · Ray 1mo ago
r5478n102cd-tr-ff.step Publish 0.1.0 · Ray 1mo ago
README.md r5478n102cd-tr-ff: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 15d ago

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

Same part, different packaging or reel option.

  • R5478N102CD-TR-FF
  • R5475N

CAD (KiCad official)

  • Symbol: R5478N102CD-TR-FF
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: r5478n102cd-tr-ff-etched.step / r5478n102cd-tr-ff-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); r5478n102cd-tr-ff.step / r5478n102cd-tr-ff.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
r5478n102cd-tr-ff.step 97 KB You want the bare part, or you mark your own boards.
r5478n102cd-tr-ff-etched.step 2.6 MB You want the part with R5478N102CD-TR-FF already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 643 faces against 117 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Ricoh Elec Devices datasheet (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