The DRV8825 provides an integrated motor driver solution for printers, scanners, and
other automated equipment applications. The device has two H-bridge drivers and a microstepping
indexer, and is intended to drive a bipolar stepper motor. The output driver block consists of
N-channel power MOSFETs configured as full H-bridges to drive the motor windings. The DRV8825 is
capable of driving up to 2.5 A of current from each output (with proper heat sinking, at 24 V and
A simple STEP/DIR interface allows easy interfacing to controller circuits. Mode pins
allow for configuration of the motor in full-step up to 1/32-step modes. Decay mode is configurable
so that slow decay, fast decay, or mixed decay can be used. A low-power sleep mode is provided
which shuts down internal circuitry to achieve very low quiescent current draw. This sleep mode can
be set using a dedicated nSLEEP pin.
Internal shutdown functions are provided for overcurrent, short circuit, under voltage
lockout and over temperature. Fault conditions are indicated via the nFAULT pin.
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