The DRV8885 is a stepper motor driver for industrial equipment applications. The device has two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sense. The DRV8885 is capable of driving up to 1.5 A full scale or 1.0 A rms output current (depending on proper PCB ground plane for thermal dissipation and at 24 V and TA = 25°C).
The DRV8885 integrated current sense functionality eliminates the need for two external sense resistors.
The STEP/DIR pins provide a simple control interface. The device can be configured in full-step up to 1/16 step modes. A low-power sleep mode is provided for very-low quiescent current standby using a dedicated nSLEEP pin.
Internal protection functions are provided for undervoltage, charge pump faults, overcurrent, short circuits, and overtemperature. Fault conditions are indicated by an nFAULT pin.
For all available packages, see the orderable addendum at the end of the data sheet.
PWM Microstepping Stepper Motor Driver
Up to 1/16 Microstepping
Non-Circular and Standard ½ Step Modes
Integrated Current Sense Functionality
No Sense Resistors Required
±6.25% Full-Scale Current Accuracy
Slow and Mixed Decay Options
8.0- to 37-V Operating Supply Voltage Range
Low RDS(ON): 0.86 Ω HS + LS at 24 V, 25°C
High Current Capacity
1.5-A Full Scale per Bridge
1.0-A rms per Bridge
Fixed Off-Time PWM Chopping
Simple STEP/DIR Interface
Low-Current Sleep Mode (20 μA)
Small Package and Footprint
24 HTSSOP (PowerPAD)
Protection Features
VM Undervoltage Lockout (UVLO)
Charge Pump Undervoltage (CPUV)
Overcurrent Protection (OCP)
Thermal Shutdown (TSD)
Fault Condition Indication Pin (nFAULT)
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