1.8A per bridge — drives small brushed DC and bipolar stepper motors
The DRV8839DSSR: Each half-bridge delivers up to 1.8 A continuous, enough to spin a small brushed DC motor or drive one phase of a bipolar stepper. The integrated Power MOSFETs eliminate the need for external FETs and their gate-drive circuitry, shrinking the board footprint to the 12-WSON package alone.
The motor load voltage can be anywhere from 0 V to 11 V, independent of the logic supply — handy when the motor runs on a higher battery voltage than the controller. Battery-powered applications are the stated target. The wide supply tolerance handles a single-cell Li-ion discharging from 4.2 V down to its cutoff without a boost converter.
Parallel interface — no protocol overhead
The DRV8839DSSR uses a Parallel control interface. Each bridge is driven by a pair of logic inputs (IN1/IN2 for one, IN3/IN4 for the other), so any GPIO-rich MCU can run it without SPI or I2C configuration. The firmware just toggles pins to set direction, brake, and coast states.
12-WSON (2x3 mm) — layout and thermal notes
The junction temperature range is -40°C to 150°C, so the copper area and via count must keep TJ below 150°C at the 1.8 A load current.
ROHS3 compliant — no exemptions to track
The DRV8839DSSR carries ROHS3 Compliant status, meaning it meets the EU RoHS directive without any of the exempted substance categories. No date-code restrictions or special handling for lead-free reflow.