A3977SEDT

Name: A3977SEDT
Brand: Allegro MicroSystems
Rating: 4.5 (10 reviews)
Author: Lisleapex

5,639 Effective Inventory

A3977SEDT

Effective Inventory5,639

Manufacturer Part # : A3977SEDT
Package/Case: PLCC-44
Brand: Allegro MicroSystems

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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.

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About Shipping

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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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A3977SEDT 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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A3977SEDT Description

The A3977SEDT is a stepper motor driver chip designed for controlling the speed and direction of bipolar stepper motors from Allegro Microsystems, featuring advanced control algorithms for precise motor control.

Pin Details

The A3977SEDT is a 44-pin PLCC (Plastic Leaded Chip Carrier) package with the following pins:

PIN 1-4: Motor Enable (EN)
PIN 5-8: Motor Direction (DIR)
PIN 9-12: Motor Speed (SPD)
PIN 13-16: Power Supply (VCC)
PIN 17-20: Ground (GND)
PIN 21-24: Motor Phase A (PHA)
PIN 25-28: Motor Phase B (PHB)
PIN 29-32: Motor Phase C (PHC)
PIN 33-36: Motor Phase D (PHD)
PIN 37-40: Motor Enable (EN) for Motor B
PIN 41-44: Reserved Pins

Features

High Current Handling: Capable of handling high currents up to 2.5A per phase.
Advanced Control Algorithms: Provides precise motor control with advanced algorithms for smooth acceleration and deceleration.
Wide Operating Range: Operates over a wide temperature range of -40°C to +125°C, making it suitable for various applications.
Low Power Consumption: Optimized for low power consumption, ideal for battery-powered devices or energy-efficient systems.

Applications

The A3977SEDT is commonly used in a wide range of applications that require precise motor control, including industrial automation, medical devices, and consumer electronics.

Where to Use:

Industrial Automation Systems
Medical Devices
Consumer Electronics
Automotive Applications

Manufacturer

The A3977SEDT is manufactured by Allegro Microsystems, a leading provider of high-performance power management and motor control solutions.

Packages

The A3977SEDT comes in a 44-pin PLCC (Plastic Leaded Chip Carrier) package, making it suitable for surface-mount technology applications.

Equivalent Parts of A3977SEDT

A3985: A comparable stepper motor driver chip from Allegro Microsystems with similar features and performance.
L6470: An alternative stepper motor driver chip from STMicroelectronics that offers equivalent functionality.

FAQ

Q: What is the maximum current handling capacity of the A3977SEDT?
A: The A3977SEDT can handle high currents up to 2.5A per phase, making it suitable for demanding applications.

Q: Can the A3977SEDT be used in automotive applications?
A: Yes, the A3977SEDT is designed to operate over a wide temperature range and can be used in various automotive applications that require precise motor control.

Specifications

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

Manufacturer

ALEGRO

Product Category !

Motor Drivers and Controllers

FAQs

What is A3977SEDT?

The A3977SEDT is a microstepping motor driver integrated circuit designed by Allegro Microsystems. It is specifically designed for driving bipolar stepper motors in various applications, including robotics, automation, and CNC machines.

How Does A3977SEDT Work?

The A3977SEDT works by controlling the current flowing through the windings of a bipolar stepper motor in a microstepping fashion. It incorporates a chopper driver to regulate the current and provide smooth and precise motor movements. The device supports full-step, half-step, quarter-step, and eighth-step microstepping modes for optimal motor control.

How Many Pins does A3977SEDT have and What are the Functions of the Pinout Configuration?

The A3977SEDT is housed in a 24-pin SSOP (Shrink Small Outline Package) package. The pinout configuration includes:

VREF: Reference voltage output for current sensing.
1B, 2B, 3B, 4B: Motor winding output pins.
VCP, VS, VM: Power supply and motor voltage pins.
2A, 1A, 3A, 4A: Motor winding input pins.
GS2, GS1, GS0: Microstepping mode selection pins.
DECAY: Decay time control pin.
ENABLE: Motor driver enable pin.

What are the Pros and Cons of A3977SEDT?

Pros:

Microstepping Capability: Provides smooth and precise motor control through microstepping modes.
Integrated Chopper Driver: Regulates current flow for efficient motor operation.
Flexible Microstepping Modes: Supports multiple microstepping resolutions for customization.
Thermal Shutdown Protection: Includes thermal shutdown circuitry for overtemperature protection.
Wide Operating Voltage Range: Works with a wide range of motor and power supply voltages.

Cons:

Complexity: Requires understanding of motor control concepts for optimal use.
External Components: May need additional components such as heat sinks or current-sensing resistors for specific applications.
Package Size: The 24-pin SSOP package may require proper PCB layout and thermal management.

Are There Any Equivalents/Alternatives to A3977SEDT for Recommendation?

The DRV8825 from Texas Instruments is a comparable microstepping motor driver with similar features.
Alternatives to the A3977SEDT include the A4988 from Allegro Microsystems and the L298N from STMicroelectronics.