Packaging information
| Package | Pins WQFN (RTE) | 16 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the DRV8428E
- Dual H-bridge motor driver
- One bipolar stepper motor
- Dual bidirectional brushed-DC motors
- Four unidirectional brushed-DC motors
- Integrated current sense functionality
- No sense resistors required
- ±6% Full-scale current accuracy
- 4.2-V to 33-V Operating supply voltage range
- Multiple control
interface options
- PHASE/ENABLE (PH/EN)
- PWM (IN/IN)
- Smart tune, and mixed decay options
- 1500 mΩ HS + LS RDS(ON) at 24 V, 25°C
- Current Capacity: 1.7-A peak, 0.7-A rms
- Configurable
Off-Time PWM Chopping
- 7, 16 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 EMI
- Inrush current limiting in brushed-DC applications
- Small package and footprint
- Protection features
- VM undervoltage lockout (UVLO)
- Overcurrent protection (OCP)
- Thermal shutdown (OTSD)
Description for the DRV8428E
The DRV8428E/P devices are dual H-bridge motor drivers for a wide variety of industrial applications. The devices can be used for driving two DC motors, or a bipolar stepper motor. The DRV8428E/P are capable of driving up to 1-A full scale or 0.7-A rms output current (dependent on PCB design).
The output stage of the driver consists of N-channel power MOSFETs configured as two full H-bridges, current sensing and regulation, and protection circuitry. The integrated current sensing uses an internal current mirror architecture, removing the need for a large power shunt resistor, saving board area and reducing system cost. A low-power sleep mode is provided to achieve ultra- low quiescent current draw by shutting down most of the internal circuitry. Internal protection features are provided for supply undervoltage lockout (UVLO), output overcurrent (OCP), and device overtemperature (TSD).