28-HTSSOP motor driver with 1.75 A bridges and 60 V supply ceiling
The Texas Instruments DRV8844PWP is a fully integrated motor driver combining control logic and power stage in a single 28-HTSSOP package. It drives bipolar stepper motors or brushed DC motors using four half-bridge outputs, each rated for 1.75 A continuous. The supply and load voltage range spans 8 V to 60 V. A parallel interface simplifies connection to a host MCU or motion controller. The junction temperature rating of -40°C to 150°C qualifies it for motor-drive enclosures, automotive under-hood zones, and factory-floor automation where ambient heat is a given.
1.75 A per bridge — what it means for your motor load
Each of the four half-bridges delivers 1.75 A continuous. For a bipolar stepper, two bridges drive one winding in series; the winding current is the bridge current, so a 1.75 A-rated stepper coil is the practical ceiling. For brushed DC motors, two bridges can be paralleled per motor to push the current budget higher, but the package thermal limit (PowerPAD-soldered to a copper plane) governs the real-world derating. At 60 V supply and full current, expect to keep the HTSSOP pad area well-ventilated or forced-air cooled.
8 V to 60 V — one rail, no external regulator
The supply voltage and load voltage share the same 8 V to 60 V range, so the driver runs directly off the motor bus. That eliminates a separate logic supply regulator in many designs — the internal charge pump generates the gate-drive voltage from the main rail. Watch the lower end: at 8 V the charge pump still functions, but margin for brownout or sagging rails is thin.
Active lifecycle — no LTB pressure for new builds
The DRV8844PWP carries an Active product status with ROHS3 compliance. There is no last-time-buy notice or NRND flag on this part. For a BOM freeze or a new design start, the Active status means standard distribution pipelines are open and no forced-migration timeline exists. The 28-HTSSOP package is a common TI footprint, so second-source options (see FAQ for the DRV8811PWPR comparison) exist if dual-sourcing is required.