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.
| Number of full bridges | 1 |
| Vs (min) (V) | 4.5 |
| Vs ABS (max) (V) | 40 |
| Peak output current (A) | 10 |
| RDS(ON) (HS + LS) (mΩ) | 150 |
| Sleep current (µA) | 15 |
| Control mode | Independent 1/2-Bridge, PH/EN, PWM |
| Control interface | Hardware (GPIO), SPI |
| Features | Current sense Amplifier, Integrated Current Sensing, Open-Load Detection |
| Rating | Catalog |
| Operating temperature range (°C) | -40 to 125 |
| HTSSOP (PWP) | 24 | 49.92 mm² 7.8 x 6.4 |