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A3981KLPTR-T
+BOMIC MTR DRV BIPOLR 3-5.5V 28TSSOP
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ManufacturerAllegro MicroSystems
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Mfr. Part #A3981KLPTR-T
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Datasheet A3981KLPTR-T DataSheet
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Package TSSOP-28
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In Stock2431
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Specifications
| Attribute | Value |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| ProductStatus | Active |
| MotorType-Stepper | Bipolar |
| Function | Driver - Fully Integrated, Control and Power Stage |
| OutputConfiguration | Half Bridge (4) |
| Interface | SPI, Step/Direction |
| Technology | DMOS |
| StepResolution | 1, 1/2, 1/4, 1/16 |
| Applications | Automotive |
| Current-Output | 1.4A |
| Voltage-Supply | 3V ~ 5.5V |
| Voltage-Load | 7V ~ 28V |
| OperatingTemperature | -40°C ~ 150°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 28-TSSOP (0.173, 4.40mm Width) Exposed Pad |
Overview
Description
Key features of the A3981KLPTR-T include a wide operating voltage range, adjustable current control, and built-in protection mechanisms such as thermal shutdown, under-voltage lockout, and overcurrent protection. These safety features ensure reliable operation and enhance the longevity of the device and the motor it controls.
This IC is particularly suitable for applications like 3D printers, robotics, and industrial automation, where precise motor control is crucial. Its compact design and efficient performance make it an ideal choice for both hobbyists and professionals seeking a reliable motor driver solution.
Equivalent
1. DRV8825 from Texas Instruments
2. L6470 from STMicroelectronics
3. TB6600 from Toshiba
4. TMC2208 from Trinamic
These alternatives offer similar functionalities, but compatibility depends on specific design requirements such as voltage, current ratings, and other features. Always check the datasheets and application notes for exact specifications and ensure they meet your project needs.
Features
1. Microstepping Control: Offers precise control with up to 16 microsteps per step, improving motor smoothness and position accuracy.
2. Current Control: Advanced current control through a fixed off-time, pulse-width modulation (PWM) technique, which helps in minimizing power loss and improving efficiency.
3. Protection Features: Includes overcurrent protection, thermal shutdown, and undervoltage lockout to safeguard the device and connected components.
4. Low RDS(on): Features low on-resistance, enhancing thermal efficiency and reducing power dissipation.
5. Adjustable Settings: Configurable settings for step modes and current levels to suit different application needs.
6. Operating Voltage: Supports a wide voltage range, making it versatile for various applications.
7. Compact Package: Available in a compact package suitable for space-constrained applications.
These features make it suitable for various applications such as 3D printers, robotics, and CNC machines, where precise motor control is crucial.
Pinout
Key functions of the A3981 include:
1. Microstepping: Offers up to 1/8th microstepping for precise control of stepper motors.
2. Current Control: Features a built-in current control mechanism, allowing dynamic adjustment of the output current to optimize motor performance.
3. Protection Features: Includes overcurrent protection, thermal shutdown, and undervoltage lockout to ensure reliable operation and prevent damage.
4. PWM Control: Utilizes a pulse-width modulation (PWM) technique for current regulation, improving efficiency.
The A3981 also provides a simple interface for control and is designed to minimize external components, simplifying the design process for applications requiring motor control.
Manufacturer
Application
1. Industrial Automation: Used in CNC machines, robotics, and automated assembly systems for precise motor control.
2. 3D Printing: Provides accurate step control for printer head movements, ensuring high-quality prints.
3. Medical Equipment: Utilized in devices requiring precise motor actuation, such as pumps and imaging systems.
4. Consumer Electronics: Applied in devices like cameras for lens positioning.
5. Office Equipment: Used in printers and scanners for accurate paper handling and carriage positioning.
These applications benefit from its features such as microstepping, voltage regulation, and thermal protection.