Drive topology and current capability
The BD63524AEFV-E2: The BD63524AEFV- is a fully integrated bipolar stepper motor driver with the control and power stage on a single die — no external FETs or gate-drive components needed. Four half-bridge outputs drive the two stator windings, and the DMOS output stage delivers a continuous 2.5 A per winding. The 8 V to 28 V supply range covers both the motor voltage and the internal logic rail from the same pin. For a 24 V nominal bus, the part has 4 V of headroom above the motor's back-EMF ceiling at rated speed — enough to hold current regulation without dropping into dropout.
Package, footprint, and thermal interface
The supplier device package is designated 28-HTSSOP-B — the 'H' suffix flags the exposed-pad variant. Surface-mount assembly with a standard reflow profile for MSL 3 or better, typical for this package class. The operating temperature range is -25 °C to 85 °C, which covers most industrial and appliance environments but does not reach the automotive -40 °C low end.
Lifecycle and compliance
ROHM lists the BD63524AEFV- as Active with ROHS3 compliance. Cut Tape suits prototype or low-volume builds.