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Data Sheet
DRV8421 18V 2A Dual H-Bridge
Stepper Driver
1 Features
- Dual H-Bridge Motor Driver
- Single/Dual Brushed DC
- Stepper
- Solenoids
- 4 to 18V Operating Supply Voltage
Range
- Low ON-resistance: HS + LS = 900mΩ
(Typical, 25°C)
- High Output Current per H-Bridge
- 2A Maximum Driver Current at 12V and
TA = 25°C
- Parallel Mode Available Capable of
4A Maximum Driver Current at 12V and TA = 25°C
- Device versions:
- DRV8421A (4-wire input):
Independent Half Bridge Control
- DRV8421B (2-wire input): Sleep
Mode, Fault detect
- Similar LV Stepper Drivers:
- DRV8410: 1.65 to
11V (800mΩ RDS(ON))
- DRV8411: 1.65 to
11V (400mΩ RDS(ON))
- DRV8411A: 1.65 to
11V (400mΩ RDS(ON))
- PWM Control Interface
- Low-Current 3µA Sleep Mode (2-wire input version
only)
- Thermally-Enhanced Surface Mount Package
- Protection Features
- VM Undervoltage Lockout (UVLO)
- Overcurrent Protection (OCP)
- Thermal Shutdown (TSD)
- Fault Condition Indication Pin (nFAULT) (2-wire
input version only)