DRV8434S Stepper Driver With Integrated Current Sense, 1/256 Microstepping, SPI Interface, Smart Tune Technology and Stall Detection

1 Features

PWM Microstepping Stepper Motor Driver
- SPI Interface with STEP/DIR pins
- Up to 1/256 Microstepping Indexer
Integrated Current Sense Functionality
- No Sense Resistors Required
- ±4% Full-Scale Current Accuracy
Smart tune, slow, and mixed decay options
4.5 to 48-V Operating Supply Voltage Range
Low R_DS(ON): 330 mΩ HS + LS at 24 V, 25°C
High Current Capacity: 2.5 A Full-Scale, 1.8 A rms
TRQ_DAC bits to scale full-scale current
Configurable Off-Time PWM Chopping
- 7-μs, 16-μs, 24-μs, or 32-μs
Supports 1.8 V, 3.3 V, 5.0 V Logic Inputs
Daisy Chain support with SPI
Low-Current Sleep Mode (2 μA)
Spread spectrum clocking for low EMI
Small Package and Footprint
Protection Features
- VM Undervoltage Lockout (UVLO)
- Charge Pump Undervoltage (CPUV)
- Overcurrent Protection (OCP)
- Sensorless stall detection
- Open Load Detection (OL)
- Overtemperature Warning (OTW)
- Thermal Shutdown (OTSD)
- Fault Condition Output (nFAULT)