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A4957SESTR-T
+Lista de MateriaisIC MOTOR DRIVER 3V-5.5V 24QFN
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FabricanteAllegro MicroSystems
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Peça do Fabricante #A4957SESTR-T
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Ficha Técnica A4957SESTR-T DataSheet
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Pacote QFN-24
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Especificações
| Atributo | Valor |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Active |
| Motor Type - ACDC | Brushed DC |
| Function | Controller - Commutation, Direction Management |
| Output Configuration | Pre-Driver - Half Bridge (2) |
| Interface | Parallel |
| Technology | Power MOSFET |
| Applications | General Purpose |
| Voltage - Supply | 3V ~ 5.5V |
| Voltage - Load | 4.5V ~ 50V |
| Operating Temperature | -20°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
Visão Geral
Description
Key features of the A4957SESTR-T include overcurrent protection, thermal shutdown, and under-voltage lockout, ensuring the IC's robustness and reliability in harsh operating environments. Its compact design supports efficient heat dissipation, and it is typically packaged for surface mount applications, simplifying the assembly process.
This motor driver IC is suitable for applications where precise motor control is necessary, such as in automotive actuators, pumps, and fans. Its ability to handle high current loads while maintaining a small footprint makes it an ideal choice for designers looking to optimize space and performance in motor control systems.
Equivalent
Features
1. Dual H-Bridge Design: It incorporates two full-bridge drivers, allowing efficient control of the two phases of a bipolar stepper motor.
2. Current Regulation: The device offers adjustable current limiting, enabling precise control of motor torque and speed.
3. Microstepping: Supports microstepping up to 1/16th step, providing smoother and quieter motor operation.
4. Protection Features: Includes overcurrent protection, thermal shutdown, and undervoltage lockout to enhance reliability and safeguard against damage.
5. PWM Control: Uses pulse-width modulation for current control, delivering efficient motor performance with reduced power loss.
6. Low RDS(on): Features low on-resistance for its output drivers, improving efficiency and minimizing heat generation.
7. Compact Package: Available in a small surface-mount package, making it suitable for space-constrained applications.
8. Wide Voltage Range: Operates over a broad voltage range, typically from 8V to 50V, accommodating various power supply configurations.
These features make the A4957SESTR-T suitable for a range of applications, including robotics, industrial automation, and consumer electronics.
Pinout
The main functions of this IC include:
1. Motor Control: It provides PWM control to drive the motor efficiently.
2. Protection Features: Includes overcurrent, thermal shutdown, and undervoltage lockout protection.
3. Diagnostics: Offers fault reporting for monitoring motor operation.
4. Interface: It can be controlled via a microcontroller or a logic interface.
The A4957SESTR-T helps simplify the design by integrating multiple functions into a single chip, reducing the need for external components and enhancing reliability. For exact pin configurations and a detailed description of each pin's function, refer to the manufacturer's datasheet.
Manufacturer
Application
1. Industrial Automation: Used for controlling motors in robotics and conveyor systems.
2. Automotive Systems: Suitable for applications like engine control systems, electric windows, and seat adjustments.
3. Consumer Electronics: Powers motors in devices like printers, scanners, and smart appliances.
4. Home Automation: Facilitates motor control in smart home devices such as automated blinds and curtains.
5. Medical Equipment: Used in devices requiring motor control for precision and reliability, such as pumps and adjustable beds.
Its features support efficient energy usage and reliability across these applications.