The BH6578FVM and BD7931F are reversible motor drivers with a wide output dynamic range, with power MOS used for the output transistor. The motor drivers can set the output mode to four modes of normal rotation, reverse rotation, stop (idling), and braking in accordance with input logic (2 inputs).
The ROHM BH6578FVM is a reversible motor driver for brush DC motors with a MOS output stage, offering four operation modes (forward, reverse, stop, brake) controlled by two logic inputs. It is supplied in an MSOP8 package and includes a built‑in thermal shutdown circuit.
The document provides absolute maximum ratings, recommended operating ranges, electrical characteristics, thermal derating curves, pin descriptions, and example circuit diagrams. Application notes focus on CD/DVD tray loading and other DC‑motor driven equipment, with guidance on layout, grounding, and protection against reverse polarity and electromagnetic interference.
| Supply voltage (Vec) range | 7 V – 15 V |
|---|---|
| Recommended supply voltage | 4.5 V – 5.5 V |
| Output current (Iout) | 500 mA |
| ON resistance (Ron) typical | 1.0 Ω |
| Power dissipation (Pd) max | 0.55 W |
| Operating temperature range | -35 °C – +85 °C |
| Junction temperature max (Tjmax) | 150 °C |
| Package | MSOP8 |
The driver can supply up to 500 mA of output current.
The recommended supply voltage is 4.5 V to 5.5 V.
It operates from –35 °C up to +85 °C.