A3986SLDTR-T Integrated Circuits (ICs)

Step Resolution:	1, 1/2, 1/4, 1/16
Base Part Number:	A3986
Supplier Device Package:	38-TSSOP
Package / Case:	38-TFSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-20°C ~ 85°C (TA)
Voltage - Load:	12 V ~ 50 V
Voltage - Supply:	3 V ~ 5.5 V
Current - Output:	--
Applications:	General Purpose
Series:	--
Technology:	Power MOSFET
Interface:	Logic
Output Configuration:	Pre-Driver - Half Bridge (4)
Function:	Controller - Commutation, Direction Management
Motor Type - AC, DC:	--
Motor Type - Stepper:	Bipolar
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The A3986SLDTR-T is a current regulation modern integrated circuit (“IC”) designed and produced by Allegro MicroSystems. It is a pulse-width-modulated current regulator core that can provide flexible motor speed and current regulation solutions for many different application fields, particularly in motor drivers and controllers. This device provides a simple way for users and engineers to control the speed and acceleration of the motors, and to increase stability in motor performance.

Application Fields

The A3986SLDTR-T is used primarily in motor drivers and controllers, as well as other applications that require regulation of current, speed, or other motor functions. It is suitable for linear, stepper, and BLDC motors, and can be used in a variety of applications such as industrial, automotive, office automation, robotics, and medical devices. Additionally, the A3986SLDTR-T is a popular choice for applications that require the ability to control multiple motors, and its flexibility and scalability makes it an ideal choice for large scale motor control solutions.

Benefits and Features

The A3986SLDTR-T offers a range of features and benefits to users, that makes it an ideal choice for motor driver and controller applications. The device has an adjustable current limit, and can provide control of the motor speed without the need for external components. Additionally, it provides thermal Protection and current foldback which prevents the motor from overheating or stalling. The device also features programmable motor current, automatic motor engagement, and adjustable dead-time for improved motor control. Furthermore, the A3986SLDTR-T provides integrated overvoltage protection and spike suppression, making it suitable for applications in noisy electrical environments.

Working Principle

The A3986SLDTR-T provides a current motoring solution by controlling the current flowing through the motor. The device works by modulating the pulse width of the power source, which in turn changes the energy output to the motor and it’s performance. This allows users to precisely regulate the speed of the motor and its other functions, such as acceleration, deceleration, and torque. The A3986SLDTR-T is a scalable solution and can be used to control more than one motor, allowing for the flexible control of large scale motor control solutions.

Conclusion

The A3986SLDTR-T is an integrated current regulation IC designed and produced by Allegro MicroSystems for motor control and other applications. It is a pulse-width-modulated current regulator core which provides flexible control and stability for a range of motor functions. The device is suitable for a variety of applications including industrial, automotive, office automation, robotics, and medical devices. It offers a range of features such as adjustable current limit, thermal protection, adjustable dead-time, and integrated overvoltage protection to ensure smooth and efficient performance. The A3986SLDTR-T works by controlling the current passing through the motor, and is a scalable solution which allows flexible control of multiple motors.

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