A3987SLPTR-T

Name: A3987SLPTR-T
Brand: Allegro MicroSystems
Rating: 4.5 (10 reviews)
Author: Lisleapex

advanced microstepping technology

5,358 Effective Inventory

A3987SLPTR-T

Effective Inventory5,358

advanced microstepping technology

Manufacturer Part # : A3987SLPTR-T
Package/Case: TSSOP-24
Brand: Allegro MicroSystems
Product Categories : Motor Drivers, Controllers

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A3987SLPTR-T DataSheet

Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!

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A3987SLPTR-T Details

The A3987SLPTR-T is a stepper motor driver integrated circuit designed for precise and efficient motor control in various applications. This IC offers microstepping capabilities, current regulation, and protection features, making it suitable for robotics, automation, and 3D printing applications.

Pinout

1 (DIR): Direction Input
2 (VM): Motor Power Supply Voltage
3 (GND): Ground
4 (VCP): Charge Pump Voltage
5 (DECAY): Decay Mode Control
6 (VREF): Reference Voltage Output
7 (ISEN): Current Sense Input
8 (OUT1): Motor Output 1
9 (OUT2): Motor Output 2

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

Microstepping Capability: Provides smooth and precise motor control with microstepping support.
Current Regulation: Regulates motor current to prevent overheating and improve efficiency.
Protection Features: Includes overcurrent protection and thermal shutdown for reliable operation.
High Efficiency: Designed for efficient power conversion and motor control.
Low Quiescent Current: Offers low power consumption in standby mode.

Application

Robotics: Ideal for precise motion control in robotic systems and automation applications.
3D Printing: Used in 3D printers for accurate positioning and movement of print heads.
Industrial Automation: Suitable for industrial automation systems requiring reliable and efficient motor control.

How to Use

Connect the A3987SLPTR-T to your stepper motor according to the specified motor wiring and power connections. Set the decay mode and current regulation based on your application requirements. Use the direction input for controlling motor direction and adjust the reference voltage for optimal motor performance. Refer to the datasheet for detailed setup and usage instructions.

Application Circuit

The application circuit diagram for the A3987SLPTR-T illustrates the connections required for integrating the stepper motor driver into your system. It includes motor connections, power supply input, and control signal connections for proper motor control.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

DRV8825: A similar stepper motor driver offering comparable performance and functionality.
TMC2208: An alternative stepper driver with advanced features for silent operation.

Complementary

The A3987SLPTR-T can be complemented by the A3988SLPTR-T, which provides additional current regulation features and higher microstepping resolutions for enhanced motor control.

When choosing complementary motor drivers, ensure compatibility and performance alignment with your specific motor and application requirements.

Frequently Asked Questions

Q: What is the maximum motor voltage supported by the A3987SLPTR-T?

A: The A3987SLPTR-T can handle motor power supply voltages up to a specified maximum limit. Refer to the datasheet for exact voltage ratings and operational limits.

Q: Does the A3987SLPTR-T support daisy-chaining multiple drivers for parallel motor control?

A: The A3987SLPTR-T can be configured for parallel motor control by connecting multiple drivers together, providing synchronized motion control for multiple motors. Refer to the datasheet for detailed setup instructions.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category !	Motor / Motion / Ignition Controllers & Drivers	RoHS	Details
Product	Brushed DC Motor Drivers	Type	Microstepping
Operating Supply Voltage !	3 V to 5.5 V	Output Current !	1.5 A
Operating Supply Current	4 mA	Minimum Operating Temperature	- 20 C
Maximum Operating Temperature !	+ 85 C	Mounting Style	SMD/SMT
Package / Case	TSSOP-24	Brand	Allegro MicroSystems
Load Voltage Rating	50 V	Moisture Sensitive	Yes
Number of Outputs	2 Output	Product Type !	Motor / Motion / Ignition Controllers & Drivers
Series	A3987	Factory Pack Quantity	4000
Subcategory	PMIC - Power Management ICs

Datasheet PDF

Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.

Preliminary Specification A3987SLPTR-T PDF Download

FAQs

What is A3987SLPTR-T?

The A3987SLPTR-T is a dual full-bridge PWM microstepping motor driver designed by Allegro MicroSystems. It is specifically designed for driving bipolar stepper motors in a wide range of applications, including robotics, automation, 3D printers, and CNC machines.

How Does A3987SLPTR-T Work?

The A3987SLPTR-T works by controlling the current and voltage applied to the coils of a bipolar stepper motor to achieve precise microstepping motion. It utilizes pulse-width modulation (PWM) to control the motor current, enabling smooth and accurate positioning of the motor shaft. The dual full-bridge configuration allows independent control of two stepper motors.

How Many Pins does A3987SLPTR-T have and What are the Functions of the Pinout Configuration?

The A3987SLPTR-T is housed in a 28-pin TSSOP (Thin Shrink Small Outline Package) package. The pinout configuration includes:

VCP, VINT: Power supply and internal voltage regulator pins.
GND: Ground pin.
NEN/SET: Enable/Set input pin.
M0, M1, M2: Microstepping resolution control pins.
SLEEP: Sleep mode input pin.
RST: Reset input pin.
INA1, INA2, INB1, INB2: Input control pins for motor 1.
INC1, INC2, IND1, IND2: Input control pins for motor 2.

What are the Pros and Cons of A3987SLPTR-T?

Pros:

Microstepping Support: Allows smooth and precise movement of stepper motors.
Dual Motor Control: Supports independent control of two stepper motors.
High Efficiency: Utilizes PWM current control for efficient motor operation.
Thermal Protection: Includes thermal shutdown and thermal warning features to protect the driver and motor.
Compact Package: The 28-pin TSSOP package is compact and suitable for space-constrained designs.

Cons:

Complexity: Requires careful attention to motor current, microstepping settings, and thermal considerations for optimal performance.
External Components: May require additional external components such as current sense resistors and diodes for full functionality.

Are There Any Equivalents/Alternatives to A3987SLPTR-T for Recommendation?

Alternatives to the A3987SLPTR-T include the DRV8825 from Texas Instruments and the TB67S249FTG from Toshiba, both of which are also dual full-bridge PWM microstepping motor drivers.