A3977SLP

Name: A3977SLP
Brand: Allegro MicroSystems
Rating: 4.5 (10 reviews)
Author: Lisleapex

28-Pin package suitable for small electronic devices

4,349 Effective Inventory

A3977SLP

Effective Inventory4,349

28-Pin package suitable for small electronic devices

Manufacturer Part # : A3977SLP
Package/Case: TSSOP-28
Brand: Allegro MicroSystems
Product Categories : Motor Drivers, Controllers
Series : A3977

Quality Assurance

All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.

Certification

We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.

Shipping & Payment

About Shipping

We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.

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Service & Packaging

About After Sales Service

All Parts Extended Quality Guarantee

Initiate the application within 90 days from the shipment date.

Confirm the return or exchange with our staff.

Maintain the goods in their original condition as received.

Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]

About packaging

Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.

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A3977SLP 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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A3977SLP Details

The A3977SLP is a high-performance stepper motor driver IC from Allegro MicroSystems, designed for precise control of stepper motors in various applications. This device offers advanced features and improved performance compared to previous generations.

Pinout

Pin Number	Purpose
VCC	Power supply (5V)
GND	Ground reference
INH	Input for inhibit signal
PHASE_A	Output for phase A
PHASE_B	Output for phase B
PHASE_C	Output for phase C

Key Features

High-Performance Stepper Motor Driver: The A3977SLP is designed to drive stepper motors with high precision and accuracy.
Advanced Microstepping: This device supports microstepping up to 16x, allowing for precise control of the motor's position.
High Current Capability: The A3977SLP can handle high current applications, making it suitable for demanding motor control tasks.
Low Power Consumption: This device is designed to operate at low power consumption levels, reducing heat generation and increasing overall system efficiency.

Applications

Industrial Automation: The A3977SLP is suitable for industrial automation applications where precise control of stepper motors is required, such as in robotics, CNC machines, and medical devices.
Aerospace and Defense: This device can be used in aerospace and defense applications where high-performance stepper motor control is necessary, such as in navigation systems and military equipment.

Where to Use

The A3977SLP is suitable for use in a wide range of applications that require precise control of stepper motors. Some examples include:

Robotics and CNC machines
Aerospace and defense systems
Medical devices and equipment
Industrial automation systems

How to Use

To use the A3977SLP, follow these steps:

Connect the VCC pin to a 5V power supply.
Connect the GND pin to the system ground reference.
Apply an inhibit signal to the INH pin to control the motor's operation.
Connect the PHASE_A, PHASE_B, and PHASE_C pins to the stepper motor's coils according to the motor's specifications.

Equivalents

A3985SLP: A similar stepper motor driver IC from Allegro MicroSystems with comparable features and performance.
L6470: An alternative stepper motor driver IC from STMicroelectronics with equivalent functionality.

Complementary

The A3977SLP can be complemented by other Allegro MicroSystems products, such as the A3985SLP or the A3952.

Frequently Asked Questions

Q: What is the maximum current output of the A3977SLP?
A: The maximum current output of the A3977SLP is 2.5A per phase.
Q: Can the A3977SLP be used in a 3.3V system?
A: Yes, the A3977SLP can be used in a 3.3V system by connecting the VCC pin to the 3.3V power supply and using an external voltage regulator or level shifter if necessary.

Specifications

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

Product Name	A3977SLP	Product Type !	Motor Driver IC
Manufacturer	Allegro Microsystems	Motor Type	Stepper Motor or DC Motor
Number of Motor Outputs	2	Supply Voltage	5V to 50V
Package Type	Surface-Mount SOIC-16	Operating Temperature Range !	-40°C to 85°C

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 A3977SLP PDF Download

FAQs

What is A3977SLP?

The A3977SLP is a microstepping bipolar stepper motor driver designed by Allegro Microsystems. It is used to control the precise movement of bipolar stepper motors in various applications such as 3D printers, CNC machines, and robotic systems.

How Does A3977SLP Work?

The A3977SLP works by converting digital control signals into the proper current levels needed to drive the coils of a bipolar stepper motor. It utilizes a microstepping technique to achieve smoother motion and higher resolution compared to full or half-step driving methods. The driver offers adjustable current control and protection features to ensure reliable motor operation.

How Many Pins does A3977SLP have and What are the Functions of the Pinout Configuration?

The A3977SLP is housed in a 24-pin SSOP (Shrink Small Outline Package) package. The pinout configuration includes:

VBB: Logic power supply pin.
VCP: Charge pump supply voltage pin.
RS, RW, EN, MS1, MS2: Control pins for setting modes and enabling functions.
DECAY, RST, SLEEP: Control pins for configuring decay modes and sleep function.
OUT1A, OUT1B, OUT2A, OUT2B: Output pins for connecting to the stepper motor coils.
VREF: Reference voltage pin for current control.

What are the Pros and Cons of A3977SLP?

Pros:

Microstepping Capability: Provides smoother motion and higher resolution compared to full-step driving.
Adjustable Current Control: Allows fine-tuning of the motor current for optimal performance.
Integrated Protection Features: Includes thermal shutdown and overcurrent protection for reliable motor operation.
Industry-Standard Package: The 24-pin SSOP package is widely compatible and easy to work with.

Cons:

Complex Control Interface: May require careful configuration of control pins and settings for desired operation.
Heat Dissipation: High current applications may require additional heat sinking or thermal management.

Are There Any Equivalents/Alternatives to A3977SLP for Recommendation?

The DRV8825 from Texas Instruments is a similar microstepping bipolar stepper motor driver with modern features.
Alternatives to the A3977SLP include the A4988 from Allegro Microsystems and the TMC2100 from Trinamic Motion Control.