DRV8834

• Dual-H-Bridge Current-Control Motor Driver
  • Capable of Driving Two DC Motors or One
    Stepper Motor
• Two Control Modes:
  • Built-In Indexer Logic With Simple
    STEP/DIRECTION Control and Up to
    1/32-Step Microstepping
  • PHASE/ENABLE Control, With the Ability to
    Drive External References for > 1/32-Step
    Microstepping
• Output Current 1.5-A Continuous, 2.2-A Peak per
  H-Bridge (at V_M = 5 V, 25°C)
• Low R_DS(ON): 305-mΩ HS + LS
  (at V_M = 5 V, 25°C)
• Wide Power Supply Voltage Range:
  2.5 V to 10.8 V
• Dynamic t_BLANK and Mixed Decay Modes for
  Smooth Microstepping
• PWM Winding Current Regulation and Limiting
• Thermally Enhanced Surface-Mount Package

The DRV8834 provides a flexible motor driver solution for toys, printers, cameras, and other mechatronic applications. The device has two H-bridge drivers, and is intended to drive a bipolar stepper motor or two DC motors.

The output driver block of each H-bridge consists of N-channel power MOSFETs configured as an H-bridge to drive the motor windings. Each H-bridge includes circuitry to regulate or limit the winding current.

With proper PCB design, each H-bridge of the DRV8834 can driving up to 1.5-A RMS (or DC) continuously, at 25°C with a V_M supply of 5 V. The device can support peak currents of up to 2.2 A per bridge. Current capability is reduced slightly at lower V_M voltages.

Internal shutdown functions with a fault output pin are provided for overcurrent protection, short-circuit protection, undervoltage lockout and overtemperature. A low-power sleep mode is also provided.

The DRV8834 is packaged in a 24-pin HTSSOP or VQFN package with PowerPAD™ (Eco-friendly: RoHS & no Sb/Br).