The DRV8824 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 DRV8824 is capable of driving up to 1.6 A of current from each output (with proper heatsinking, 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, undervoltage lockout, and over temperature. Fault conditions are indicated through the nFAULT pin.
● 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
● 1.6-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)
● VMx Undervoltage Lockout (UVLO)
● Fault Condition Indication Pin (nFAULT)
● APPLICATIONS
● Automatic Teller Machines
● Money Handling Machines
● Video Security Cameras
● Printers
● Scanners
● Office Automation Machines
● Gaming Machines
● Factory Automation
● Robotics
