This datasheet introduces ROHM's 1ch spindle motor driver IC BA6859AFP-Y,BA6664FM,BD6671FM, including 3-phase full-wave pseudo-linear system, 180° electrifying direct PWM drive system, power saving, TSD (thermal shutdown), current limiting, Hall bias circuit, FG output, 3-phase component FG output, circuit direction detection function, reverse rotation prevention circuit, short brake pin, brake mode selection pin, DSP 3.3 V etc.
The BA6859AFP‑Y is a three‑phase motor driver IC designed for CD/DVD player spindle motors and automotive applications. It integrates a pseudo‑linear drive system, PWM control, and built‑in safety features such as thermal shutdown and short‑brake.
Key features include a 3‑phase full‑wave drive, Hall‑bias and Hall‑amp circuits, current limiting, and a low‑saturation voltage output stage. The document lists absolute maximum ratings, electrical characteristics, pin assignments, and recommended external components for optimal performance.
| Hall bias voltage (Vus) | 0.5 V to 0.9 V |
|---|
A capacitor of 0.47 µF to 10 µF is recommended.
A resistance between 0.4 Ω and 1.02 Ω is recommended.