DRV8426 Stepper Driver With Integrated Current Sense, 1/256 Microstepping, STEP/DIR Interface and smart tune Technology

1 Features

PWM microstepping stepper motor driver
- Simple STEP/DIR interface
- Up to 1/256 microstepping indexer
Integrated current sense functionality
- No sense resistors required
- ±5% full-scale current accuracy
Smart tune decay technology, fixed slow, and mixed decay options
4.5 to 33-V Operating supply voltage range
Low R_DS(ON):
- 900 mΩ HS + LS at 24 V, 25°C
High current capacity per bridge
- 2.5 A peak, 1.5 A full-scale, 1.1 A rms
Pin to pin compatible with -
- DRV8424/25: 33-V, 330/550 mΩ HS + LS
- DRV8436: 48-V, 900 mΩ HS + LS
- DRV8434: 48-V, 330 mΩ HS + LS
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
Low-current sleep mode (2 μA)
Spread spectrum clocking for low electromagnetic interference (EMI)
Small package and footprint
Protection features
- VM undervoltage lockout (UVLO)
- Charge pump undervoltage (CPUV)
- Overcurrent protection (OCP)
- Thermal shutdown (OTSD)
- Fault condition output (nFAULT)