11V, 8A H-bridge motor driver with auto-sleep mode and independent 1/2-bridge control option

The DRV8218 is an integrated H-bridge motor driver

featuring four N-Channel power FETs, a charge pump regulator, and built-in

protection circuitry. A tripler charge pump architecture enables operation down to

1.8V, maintaining stable RDS(on) even at low battery voltages. All

capacitors are integrated, minimizing PCB footprint and enabling 100% duty cycle

operation.

The device supports three control interface modes

- PWM (IN1/IN2), phase/enable (PH/EN), and independent half-bridge - as well as a

parallel half-bridge mode. Each interface includes a low-power sleep mode that

reduces quiescent current to under 120nA by shutting down most internal

circuitry.

Output current reaches up to 8A peak, with a logic

supply range of 1.8V to 5.5V and a motor supply range of 1.8V to 11V. Built-in

protection includes undervoltage lockout (UVLO), overcurrent protection (OCP), and

thermal shutdown (TSD). The DRV8218 is part of a pin-to-pin compatible family with

scalable RDS(on) and supply voltage options. See Device Comparison for details, or explore TI’s full portfolio of brushed motor drivers at ti.com.