1.5 A bipolar stepper with 1/16 microstepping
The BD60223FP-E2: The BD60223FP- is a fully integrated stepper motor driver from ROHM Semiconductor, combining control logic and DMOS power stage in a single 25-HSOP package. It drives bipolar stepper motors with output current up to 1.5 A and supports step resolutions of 1, 1/2, 1/4, and 1/16 — the 1/16 microstep mode smooths low-speed torque ripple and reduces audible resonance in printer paper-feed and carriage axes.
Supply range and output configuration
The driver operates from an 8 V to 28 V supply rail, covering the common 12 V and 24 V industrial and office-automation bus voltages. The output stage is configured as four pre-driver half-bridges — two per stepper phase — with an On/Off interface that accepts simple step and direction signals from a host MCU without needing a dedicated motion controller.
Package, thermal, and temperature grade
The 25-HSOP (0.213", 5.40 mm width) package includes two heat tabs — the exposed pad on the underside must be soldered to a thermal land on the PCB and connected to a copper pour for effective junction-to-board heat transfer. Without this thermal via pattern, the driver's output current capability is thermally limited well below the 1.5 A electrical rating. For a printer or labeler running in a warehouse without climate control, the 85°C ceiling leaves margin for self-heating at full load.