DRV8871DDARQ1

Product Overview

Category: Motor Driver IC
Use: DRV8871DDARQ1 is a motor driver IC designed for driving brushed DC motors. It provides an easy-to-use interface between a microcontroller and the motor, allowing precise control of motor speed and direction.
Characteristics: The DRV8871DDARQ1 offers high efficiency, low power consumption, and robust protection features such as overcurrent protection, undervoltage lockout, and thermal shutdown.
Package: The DRV8871DDARQ1 comes in a small surface-mount package (PowerPAD) with 8 pins.
Essence: This motor driver IC is essential for controlling the movement of brushed DC motors in various applications.
Packaging/Quantity: The DRV8871DDARQ1 is typically sold in reels or tubes, with a quantity of 2500 units per reel.

Specifications

• Operating Voltage: 6V to 45V
• Output Current: Up to 3.6A continuous (5A peak)
• Number of Outputs: 1
• Control Interface: PWM (Pulse Width Modulation)
• Fault Protection: Overcurrent, Undervoltage Lockout, Thermal Shutdown
• Operating Temperature Range: -40°C to 150°C

Pin Configuration

The DRV8871DDARQ1 has the following pin configuration:

1. VCP - Power supply voltage input
2. GND - Ground reference
3. IN1 - Input for motor direction control (logic level)
4. IN2 - Input for motor direction control (logic level)
5. PWM - Input for motor speed control (PWM signal)
6. OUT - Motor output terminal
7. FAULT - Fault indication output
8. VREF - Reference voltage for current limit setting

Functional Features

• High-efficiency motor driver with low power consumption
• Precise control of motor speed and direction
• Robust protection features for safe operation
• Easy interface with microcontrollers using PWM signals
• Compact surface-mount package for space-constrained applications

Advantages and Disadvantages

Advantages: - High efficiency leads to energy savings - Wide operating voltage range allows flexibility in system design - Robust protection features ensure the safety of the motor and surrounding components - Easy integration with microcontrollers simplifies the overall system design

Disadvantages: - Limited to driving brushed DC motors only - Requires external components for current limit setting and fault indication

Working Principles

The DRV8871DDARQ1 operates by receiving control signals from a microcontroller through the IN1, IN2, and PWM pins. The IN1 and IN2 pins determine the direction of the motor rotation, while the PWM pin controls the motor speed through pulse width modulation.

The motor output is connected to the OUT pin, which drives the brushed DC motor. The VREF pin is used to set the current limit for the motor, ensuring it operates within safe limits.

The DRV8871DDARQ1 incorporates various protection features such as overcurrent protection, undervoltage lockout, and thermal shutdown. These features safeguard the motor and the driver IC from damage during abnormal operating conditions.

Detailed Application Field Plans

The DRV8871DDARQ1 finds applications in various fields, including:

1. Robotics: Controlling the movement of robot arms, wheels, and joints.
2. Automotive: Powering window regulators, seat adjustments, and HVAC actuators.
3. Industrial Automation: Driving conveyor belts, pumps, and fans.
4. Home Appliances: Operating vacuum cleaners, blenders, and electric shavers.
5. Consumer Electronics: Controlling camera lens movements, drones, and RC cars.

Detailed and Complete Alternative Models

1. L293D: A popular motor driver IC with similar functionality but lower operating voltage range (4.5V to 36V).
2. TB6612FNG: Another motor driver IC suitable for driving brushed DC motors, offering a compact package and built-in protection features.
3. SN754410: A versatile motor driver IC capable of driving various types of motors, including brushed DC motors, stepper motors, and solenoids.

These alternative models provide options for different system requirements and design constraints.

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