Description:
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 vi
a the nFAULT pin.
Application:
Automatic Teller Machines
Money Handling Machines
Video Security Cameras
Printers
Scanners
Office Automation Machine
Gaming Machines
Factory Automation
Robotics
Features:
PWM Microstepping Stepper Motor Driver
Built-In Microstepping Indexer
Up to 1/32 Microstepping
Multiple Decay Modes
Mixed Decay
Slow Decay
Fast Decay
8.2-V to 45-V Operating Supply Voltage Range
2.5-A Maximum Drive Current at 24 V and TA = 25°C
Simple STEP/DIR Interface
Low Current Sleep Mode
Built-In 3.3-V Reference Output
Small Package and Footprint
Protection Features
Overcurrent Protection (OCP)
Thermal Shutdown (TSD)
VM Undervoltage Lockout (UVLO)
Fault Condition Indication Pin (nFAULT)