DRV8846RGET

MOTOR DRIVER, H-BRIDGE, 1.4A, VQFN-24.

The DRV8846RGET is a bipolar highly-integrated stepper Motor Driver with on-chip 1/32 microstepping indexer (step/direction control). It is designed projectors and other automated equipment applications. The device has two H-bridges and a microstepping indexer and is intended to drive a bipolar stepper motor. The output block of each H-bridge driver consists of N-channel and P-channel power MOSFETs configured as full H-bridges to drive the motor windings. It is capable of driving up to 1A full scale output current (with proper heat sinking and TA=25°C). A simple step/direction interface allows easy interfacing to controller circuits. Pins allow configuration of the motor in full-step up to 1/32-step modes. Decay mode is configurable so that adaptive decay, slow decay, fast decay and mixed decay can be used. The PWM current chopping off-time can also be selected. A low-power sleep mode is provided which shuts down internal circuitry to achieve very-low quiescent current draw.