BD64550EFV is a 1-chip system motor driver integrating 2-channel H-bridge driver, step-down switching regulator with built-in power DMOS, series regulator and reset output.
The BD64550EFV is a single‑chip motor driver that integrates a 2‑channel H‑bridge, a switching regulator with built‑in P‑channel power DMOS, a series regulator and a reset output. It is intended for ink‑jet and photo printers and provides low‑on‑resistance H‑bridge operation, constant‑current chopping, soft‑start, over‑current and over‑voltage protection, and thermal shutdown.
The document lists absolute maximum ratings, operating conditions, electrical characteristics, pin assignments, serial interface details, and application circuit diagrams. It also includes ordering information and legal notices from ROHM.
| Applied voltage (VM) | 40 V |
|---|---|
| Logic input voltage (VL) | -0.4~5.5 V |
| Power dissipation (Pd) | 1600 mW |
| Operating temperature range | -25 ~ +85 °C |
| Storage temperature range | -55 ~ +150 °C |
| Junction temperature max | 150 °C |
| Motor driver peak output current | 8.0 A |
| Motor driver DC output current | 2.5 A |
| Switching regulator DC output current | 0.5 A |
| Series regulator DC output current | 0.25 A |
The driver operates from 7 V to 36 V supply voltage.
The soft‑start function is 23.6 ms typical.