Description
The DRV8841 provides an integrated dual H-bridge motor driver solution for printers, scanners, and other automated equipment applications. The device can be used to drive one or two brushed DC motors, a bipolar stepper motor, or other loads. A simple PWM interface allows easy interfacing to controller circuits.
The output driver block consists of N-channel power MOSFETs configured as H-bridges. The DRV8841 an supply up to 2.5-A peak or 1.75-A RMS output current (with proper heat sinking at 24 V and TA = 25°C) per H-bridge.
A low-power sleep mode is provided which shuts down internal circuitry to achieve very low quiescent current draw. This sleep mode can be set using a dedicated nSLEEP pin. Internal protection features are provided for overtemperature, overcurrent, and undervoltage. Fault conditions are indicated by a nFAULT pin.
Features
• Dual H-Bridge DC Motor Driver
– Single and Dual Brushed DC
– Stepper
• PWM Control Interface
• Optional Fixed Frequency Current Regulation
– Two Bit Current Control Allows Up to Four Current Levels
• Low MOSFET On-Resistance
– 2.5-A Maximum Drive Current at 24 V and TA = 25°C
– Combined 400 mΩ RDS(ON) of High-Side and Low-Side at 24 V and TA = 25°C
• 8.2-V to 45-V Operating Supply Voltage Range
• Low Current Sleep Mode
• Built-In 3.3-V Reference Output
• Thermally Enhanced Surface Mount Package
• Protection Features
– Overcurrent Protection (OCP)
– Thermal Shutdown (TSD)
– Undervoltage Lockout (UVLO)
– Fault Condition Indication Pin (nFAULT)
Applications
• Printers
• Scanners
• Office Automation Machines
• Gaming Machines
• Factory Automation
• Robotics