DRV8837DSGR

Product Overview

Category: Integrated Circuit (IC)

Use: Motor Driver

Characteristics: - Dual H-Bridge Motor Driver - Low voltage operation (2.75V to 6.8V) - Current limit protection - Thermal shutdown protection - Small package size (8-pin VSSOP) - Low quiescent current

Package: VSSOP-8

Essence: The DRV8837DSGR is an integrated circuit motor driver designed for low voltage applications. It provides a compact and efficient solution for driving DC motors in various electronic devices.

Packaging/Quantity: The DRV8837DSGR is available in a VSSOP-8 package. It is typically sold in reels of 2500 units.

Specifications

• Operating Voltage Range: 2.75V to 6.8V
• Continuous Output Current: 1.8A per channel
• Peak Output Current: 3.6A per channel
• Quiescent Current: 0.5μA (typical)
• Number of Pins: 8
• Thermal Shutdown Protection: Yes
• Current Limit Protection: Yes

Pin Configuration

The DRV8837DSGR has the following pin configuration:

| Pin Name | Function | |----------|----------| | VM | Motor Supply Voltage | | GND | Ground | | IN1 | Input 1 | | IN2 | Input 2 | | OUT1 | Output 1 | | OUT2 | Output 2 | | VREF | Current Limit Reference Voltage | | nFAULT | Fault Indicator Output |

Functional Features

• Dual H-Bridge configuration allows bi-directional control of two DC motors.
• Low voltage operation makes it suitable for battery-powered applications.
• Current limit protection prevents damage to the motor and driver.
• Thermal shutdown protection prevents overheating of the IC.
• Small package size enables space-saving designs.
• Low quiescent current ensures minimal power consumption when idle.

Advantages and Disadvantages

Advantages: - Compact and efficient motor driver solution. - Suitable for low voltage applications. - Provides current limit and thermal shutdown protection. - Easy to integrate into electronic devices. - Low quiescent current minimizes power consumption.

Disadvantages: - Limited output current compared to higher-power motor drivers. - Restricted operating voltage range (2.75V to 6.8V).

Working Principles

The DRV8837DSGR operates by controlling the flow of current through the connected DC motors. It uses a dual H-Bridge configuration, allowing bi-directional control of the motors. The inputs (IN1 and IN2) determine the direction of rotation, while the outputs (OUT1 and OUT2) deliver the required current to drive the motors.

The motor supply voltage (VM) powers the motors, while the current limit reference voltage (VREF) sets the maximum current allowed. The fault indicator output (nFAULT) signals any detected faults, such as overcurrent or overtemperature conditions.

Detailed Application Field Plans

The DRV8837DSGR is widely used in various applications that require precise control of small DC motors. Some common application fields include:

1. Robotics: Used in robotic systems for controlling the movement of robot arms, grippers, and wheels.
2. Consumer Electronics: Integrated into portable devices like cameras, toys, and drones for motorized functions.
3. Automotive: Employed in automotive systems for controlling window regulators, seat adjustments, and mirror positioning.
4. Industrial Automation: Utilized in industrial machinery for precise motor control in conveyor belts, pumps, and actuators.
5. Medical Devices: Incorporated into medical equipment for controlling motorized components like syringe pumps and surgical instruments.

Detailed and Complete Alternative Models

1. DRV8837C: Similar to DRV8837DSGR, but with a different package (WSON-8).
2. DRV8837E: Enhanced version with extended operating voltage range (2.5V to 10.8V).
3. DRV8837F: Higher current version capable of delivering up to 2.5A per channel.
4. DRV8837G: Compact variant with reduced pin count (6-pin VSSOP).

These alternative models offer similar functionality to the DRV8837DSGR, catering to different requirements and preferences.

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