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A3955SB
DIP-16 design in plastic package for bipolar stepper motor controller applicationsA3955SB
DIP-16 design in plastic package for bipolar stepper motor controller applications
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Manufacturer Part # : A3955SB
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Package/Case: PDIP Bat
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Brand: Allegro Microsystems
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Product Categories : Motor Drivers, Controllers
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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
Shipping & Payment
About Shipping
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Service & Packaging
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]
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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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A3955SB 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!
Details
The A3955SB is a motor driver IC designed for controlling and driving the operation of a motor. It is specifically designed for use with brushed DC (direct current) motors, which are commonly used in a wide range of applications.
Key Features
- Brushed DC Motor Driver: This IC is designed to drive brushed DC motors, which are widely used for their simplicity and versatility.
- PWM Control: It uses pulse-width modulation (PWM) for controlling the speed and direction of the motor.
- Current Sensing: Some versions of this IC include current sensing for accurate control of motor current.
- Protection Features: It may include protection features such as overcurrent and overtemperature protection.
- Versatile I/Os: It typically has a variety of input and output pins for interfacing with external devices.
Application
- Electric fans, pumps, and blowers for precise speed control.
- Automotive applications for controlling systems such as windshield wipers and power windows.
- Robotics for controlling the motion of robot wheels and actuators.
- Appliances for controlling the operation of various components, such as fans and motors.
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Product Name | A3955SB | 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.
FAQs
What is A3955SB?
The A3955SB is a full-bridge PWM motor driver integrated circuit designed by Allegro Microsystems. It is commonly used in applications requiring precise control of bidirectional DC motors or actuators, such as robotics, automotive systems, and industrial automation.
How Does A3955SB Work?
The A3955SB operates by controlling the speed and direction of a DC motor through pulse-width modulation (PWM) techniques. It incorporates a full-bridge power stage to drive the motor in both forward and reverse directions with adjustable speed. The driver offers built-in protection features like thermal shutdown and overcurrent protection for safe motor operation.
How Many Pins does A3955SB have and What are the Functions of the Pinout Configuration?
The A3955SB is housed in a 16-lead SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- VBB: Bootstrap capacitor supply voltage pin.
- VCC: Logic power supply pin.
- OUT 1A, OUT 1B: Motor output pins for phase A.
- OUT 2A, OUT 2B: Motor output pins for phase B.
- IN 1, IN 2: Input pins for control signals.
- VREF, RC: Reference voltage and resistor-capacitor timing components.
- VCP, CP1, CP2: Charge pump and charge pump capacitors.
What are the Pros and Cons of A3955SB?
Pros:
- Full-Bridge Configuration: Provides bidirectional control capability for DC motors.
- Precision Control: Offers PWM speed control and direction control for accurate motor operation.
- Built-in Protections: Includes thermal shutdown and overcurrent protection for motor safety.
- Compact Design: Housed in a 16-lead SOIC package for space-efficient integration into systems.
- Suitable for Various Applications: Widely used in robotics, automotive, and industrial automation fields.
Cons:
- External Components: May require external components for power regulation and motor feedback in some applications.
- Complex Configuration: Some users may find the full-bridge control setup initially challenging to implement.
- Heat Dissipation: High current handling may require heat sinking for thermal management in demanding applications.
Are There Any Equivalents/Alternatives to A3955SB for Recommendation?
- The L298N from STMicroelectronics is a commonly used alternative motor driver with similar functionality.
- Alternatives to the A3955SB include the TB6612FNG from Toshiba and the DRV8833 from Texas Instruments.
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