• Pulse Width Modulation (PWM) Motor Driver
  • Drives External N-Channel MOSFETs
  • PWM Control Interface for Dual DC Motors
  • Supports 100% PWM Duty Cycle
• 8-V to 52-V Operating Supply Voltage Range
• Adjustable Gate Drive (4 Levels)
  • 50-mA to 200-mA Source Current
  • 100-mA to 400-mA Sink Current
• Integrated PWM Current Regulation
• Flexible Decay Modes
  • Automatic Mixed Decay Mode
  • Slow Decay
  • Fast Decay
  • Mixed Decay (Adjustable Percent Fast)
• Highly Configurable SPI
• Torque DAC to Digitally Scale Current
• Low-Current Sleep Mode (65 μA)
• 5-V, 10-mA LDO Regulator
• Thermally-Enhanced Surface-Mount Package
  • 38-Pin HTSSOP (PowerPAD)

SPACER

• Protection Features
  • VM Undervoltage Lockout (UVLO)
  • Gate Driver Fault (PDF)
  • Overcurrent Protection (OCP)
  • Thermal Shutdown (TSD)
  • Fault Condition Indication Pin (nFAULT)
  • Fault Diagnostics through SPI

• Automatic Teller and Money Handling Machines
• Office Automation Machines
• Factory Automation and Robotics
• Textile Machines

The DRV8704 is a dual-brushed motor controller for industrial equipment applications. The device controls external N-channel MOSFETs configured as two H-bridges.

Motor current can be accurately controlled using adaptive blanking time and various current decay modes, including an automatic mixed decay mode.

A simple PWM interface allows easy interfacing to controller circuits. A SPI serial interface is used to program the device operation. Output current (torque), gate drive settings, and decay mode are all programmable through a SPI serial interface.

Internal shutdown functions are provided for overcurrent protection, short-circuit protection, gate driver faults, undervoltage lockout (UVLO), and overtemperature. Fault conditions are indicated by a FAULTn pin, and each fault condition is reported by a dedicated bit through SPI.

The DRV8704 is packaged in a PowerPAD™ 38-pin HTSSOP package with thermal pad (Eco-friendly: RoHS & no Sb/Br).