DRV8825 Stepper Motor Driver IC, 45 V 1.8A 28-Pin, HTSSOP

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 MOSFET’s
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 25°C).
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.
PART NUMBER
Device Information(1)
PACKAGE
DRV8825
HTSSOP (28)
BODY SIZE (NOM)
9.70 mm × 6.40 mm

Functional Block Diagram