The DRV8873
device is an integrated driver IC for driving a brushed DC motor in industrial applications. Two logic
inputs control the H-bridge driver, which consists of four N-channel MOSFETs that drive motors
bi-directionally with up to 10-A peak current. The device operates from a single power supply and
supports a wide input supply range from 4.5 V to 38 V.A PH/EN or PWM interface allows simple interfacing to controller circuits. Alternatively,
independent half-bridge control is available to drive two solenoid loads.
A current mirror allows the controller to monitor the load current. This mirror
approximates the current through the high-side FETs, and does not require a high-power resistor for
sensing the current.A low-power sleep mode is provided to achieve very-low quiescent current draw by shutting
down much of the internal circuitry. Internal protection functions are provided for undervoltage
lockout, charge pump faults, overcurrent protection, short-circuit protection, open-load detection,
and overtemperature. Fault conditions are indicated on an nFAULT pin and through the SPI
registers.
