MC33887DH

Product Overview

Category: Integrated Circuit (IC)

Use: Motor Driver

Characteristics: - High current capability - Low voltage operation - Built-in protection features - Compact size

Package: PowerSO-20

Essence: The MC33887DH is a motor driver IC designed to control the speed and direction of DC motors.

Packaging/Quantity: The MC33887DH is available in a PowerSO-20 package. It is typically sold in reels containing 250 units.

Specifications

• Operating Voltage Range: 5V - 28V
• Continuous Output Current: Up to 5A
• Peak Output Current: Up to 10A
• Number of Outputs: 1
• Control Interface: Parallel
• Thermal Shutdown Protection: Yes
• Overcurrent Protection: Yes
• Undervoltage Lockout: Yes

Detailed Pin Configuration

The MC33887DH has a total of 20 pins. The pin configuration is as follows:

1. VBB - Positive supply voltage
2. GND - Ground
3. IN1 - Input 1
4. IN2 - Input 2
5. PWM - Pulse Width Modulation input
6. EN - Enable input
7. CS - Current sense output
8. OUT1 - Output 1
9. OUT2 - Output 2
10. VREF - Reference voltage
11. VCP - Charge pump capacitor
12. CP1 - Charge pump capacitor
13. CP2 - Charge pump capacitor
14. VREG - Regulator output
15. VDD - Logic supply voltage
16. VSS - Logic ground
17. VCP - Charge pump voltage
18. CP1 - Charge pump voltage
19. CP2 - Charge pump voltage
20. VREG - Regulator voltage

Functional Features

• Bidirectional control of DC motors
• Adjustable motor speed using PWM input
• Overcurrent protection to prevent damage to the motor and driver
• Thermal shutdown protection to prevent overheating
• Undervoltage lockout to ensure proper operation at low voltages

Advantages and Disadvantages

Advantages: - High current capability allows driving of powerful motors - Low voltage operation enables use in a wide range of applications - Built-in protection features enhance reliability and safety - Compact size saves board space

Disadvantages: - Limited number of outputs may restrict certain motor control configurations - Control interface is parallel, which may require additional circuitry for some applications

Working Principles

The MC33887DH operates by receiving control signals through its input pins (IN1 and IN2) and PWM input. These signals determine the direction and speed of the connected DC motor. The IC amplifies and drives the motor current through its output pins (OUT1 and OUT2). Built-in protection features such as overcurrent and thermal shutdown ensure safe operation.

Detailed Application Field Plans

The MC33887DH is widely used in various applications that require precise control of DC motors. Some common application fields include:

1. Robotics: The IC is used in robotic systems to control the movement of robot arms, wheels, and other motorized components.
2. Automotive: It finds application in automotive systems such as power windows, seat adjustments, and HVAC actuators.
3. Industrial Automation: The IC is utilized in industrial automation equipment for controlling conveyor belts, pumps, and other motor-driven machinery.
4. Consumer Electronics: It is employed in consumer electronics devices like drones, camera gimbals, and home appliances for motor control.

Detailed and Complete Alternative Models

Some alternative models to the MC33887DH that offer similar functionality are:

1. L298N - Dual H-Bridge Motor Driver
2. DRV8833 - Dual H-Bridge Motor Driver
3. TB6612FNG - Dual Motor Driver
4. SN754410 - Quadruple Half-H Driver

These alternative models can be considered based on specific application requirements and design constraints.

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