This document introduces the BD6422EFV, BD6425, and BD6423EFV series high voltage stepping motor drivers from ROHM. These products are low power consumption PWM constant current-drive drivers for bipolar stepping motors with a rated voltage of 45V and a rated output current of 1.0A and 1.5A.
The BD6425EFV is a low‑power PWM constant‑current driver for bipolar stepping motors, supporting supply voltages up to 45 V and output currents of 1.0 A / 1.5 A. It offers CLK‑IN drive mode, built‑in spike‑noise blanking, multiple stepping modes, and protection features such as thermal shutdown, over‑current and UVLO.
The document includes detailed electrical characteristics, pin‑out tables, application circuit diagrams, usage notes for PCB layout, thermal design, and ordering information. It also lists absolute maximum ratings, recommended component values, and safety notices for proper integration into devices such as printers or sewing machines.
| Maximum output current (DC) | 1.0 A, 1.5 A |
|---|---|
| Operating temperature range | -25 °C to +85 °C |
| Junction temperature maximum (Tjmax) | +150 °C |
It can deliver a constant current of 1.0 A or 1.5 A depending on the configuration.
The device is supplied in a microminiature, ultra‑thin HTSSOP package.
The TEST pin should be connected to GND for testing purposes.