DRV8825 stepper driver
Max current 2.5A
The DRV8825 provides an integrated motor driver
1• PWM Microstepping Stepper Motor Driver
solution for printers, scanners, and other automated
– Built-In Microstepping Indexer equipment applications. The device has two H-bridge
– Up to 1/32 Microstepping drivers and a microstepping indexer, and is intended
to drive a bipolar stepper motor. The output driver • Multiple Decay Modes
block consists of N-channel power MOSFET’s
– Mixed Decay configured as full H-bridges to drive the motor
– Slow Decay windings. The DRV8825 is capable of driving up to
– Fast Decay 2.5 A of current from each output (with proper heat
sinking, at 24 V and 25°C). • 8.2-V to 45-V Operating Supply Voltage Range
• 2.5-A Maximum Drive Current at 24 V and A simple STEP/DIR interface allows easy interfacing
T to controller circuits. Mode pins allow for configuration A = 25°C
of the motor in full-step up to 1/32-step modes. Decay
• Simple STEP/DIR Interface mode is configurable so that slow decay, fast decay,
• Low Current Sleep Mode or mixed decay can be used. A low-power sleep
• Built-In 3.3-V Reference Output mode is provided which shuts down internal circuitry
to achieve very low quiescent current draw. This • Small Package and Footprint sleep mode can be set using a dedicated nSLEEP
• Protection Features pin.
– Overcurrent Protection (OCP) Internal shutdown functions are provided for
– Thermal Shutdown (TSD) overcurrent, short circuit, under voltage lockout and
– VM Undervoltage Lockout (UVLO) over temperature. Fault conditions are indicated via
the nFAULT pin.
– Fault Condition Indication Pin (nFAULT)
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