A3981KLPTR-T

Product Overview

Category

A3981KLPTR-T belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in electronic devices for motor control applications.

Characteristics

• Package: The A3981KLPTR-T comes in a small outline package (SOP) with a thermal pad.
• Essence: It is a high-performance, dual full-bridge motor driver designed for controlling bipolar stepper and bidirectional DC motors.
• Packaging/Quantity: The A3981KLPTR-T is typically packaged in reels and available in large quantities.

Specifications

The A3981KLPTR-T has the following specifications:

• Supply Voltage Range: 4.5V to 35V
• Output Current: Up to 1.5A per bridge
• Logic Inputs: Compatible with 3.3V and 5V systems
• Protection Features: Thermal shutdown, overcurrent protection, and undervoltage lockout

Detailed Pin Configuration

The A3981KLPTR-T has a total of 24 pins. Here is the detailed pin configuration:

1. VCP - Charge pump output voltage
2. CP1 - Charge pump capacitor connection
3. CP2 - Charge pump capacitor connection
4. GND - Ground
5. VBB - High-side bootstrap supply voltage
6. VCC - Logic supply voltage
7. IN1A - Input 1A for Bridge A
8. IN1B - Input 1B for Bridge A
9. IN2A - Input 2A for Bridge A
10. IN2B - Input 2B for Bridge A
11. OUT1A - Output 1A for Bridge A
12. OUT1B - Output 1B for Bridge A
13. OUT2A - Output 2A for Bridge A
14. OUT2B - Output 2B for Bridge A
15. VREF - Reference voltage output
16. REF - Reference voltage input
17. GND - Ground
18. OUT1B - Output 1B for Bridge B
19. OUT1A - Output 1A for Bridge B
20. OUT2B - Output 2B for Bridge B
21. OUT2A - Output 2A for Bridge B
22. IN2B - Input 2B for Bridge B
23. IN2A - Input 2A for Bridge B
24. IN1B - Input 1B for Bridge B

Functional Features

The A3981KLPTR-T offers the following functional features:

• Dual full-bridge motor driver capable of driving bipolar stepper and bidirectional DC motors.
• Internal charge pump circuitry eliminates the need for external bootstrap capacitors.
• Built-in protection features such as thermal shutdown, overcurrent protection, and undervoltage lockout ensure safe operation.

Advantages and Disadvantages

Advantages: - High-performance motor control capabilities - Compact SOP package with a thermal pad - Compatible with a wide range of supply voltages - Integrated protection features enhance reliability

Disadvantages: - Limited maximum output current (up to 1.5A per bridge) - Requires careful consideration of thermal management due to the small package size

Working Principles

The A3981KLPTR-T operates by receiving control signals through its input pins (IN1A, IN1B, IN2A, IN2B) to control the direction and speed of the connected motor. The internal circuitry converts these control signals into appropriate output signals (OUT1A, OUT1B, OUT2A, OUT2B) to drive the motor coils accordingly.

Detailed Application Field Plans

The A3981KLPTR-T finds applications in various fields, including:

1. Robotics: Used for precise motor control in robotic systems.
2. Industrial Automation: Employed in machinery and equipment for accurate positioning and motion control.
3. Automotive: Integrated into automotive systems for controlling various motors, such as power windows and seat adjustments.
4. Consumer Electronics: Utilized in devices like printers, scanners, and cameras for motor-driven functions.

Detailed and Complete Alternative Models

Some alternative models to the A3981KLPTR-T include:

1. DRV8825: A similar dual full-bridge motor driver with higher output current capability.
2. L298N: Another popular dual H-bridge motor driver suitable for a wide range of motor control applications.
3. TB6600: A stepper motor driver offering advanced features and higher current handling capacity.

These alternative models provide options with varying specifications and capabilities, allowing users to choose the most suitable solution for their specific requirements.

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