A4984SETTR-T

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Power Management Integrated Circuit (PMIC) refer to integrated circuits that regulate, store and monitor the power supply of or input to a specific device. Popular PMIC applications include voltage regulators, motor controllers, and display drivers. The A4984SETTR-T, an integrated circuit from Allegro MicroSystems, is part of a PMIC motor driver and controller series, providing efficient and cost-effective solutions to motor control and power supply applications.

Overview of the A4984SETTR-T IC

The A4984SETTR-T is a all-in-one motor driver and controller for low- to medium-power applications. It integrates a full bridge driver with Pulse Width Modulation (PWM) control and protected MOSFET outputs. This integrated circuit provides bidirectional current flows and smooth control of high-power motors through a single chip. It also offers over-current protection, thermal shutdown, and crossover-current protection.

The A4984SETTR-T IC provides 1.2A maximum sink and 2.2A maximum source current. Its output stages employ low on-resistance P-channel and N-channel MOSFETs to deliver high efficiency and regulate high voltage, high current motor motion control solutions. The motor is operated using a standard PWM signal, which is applied to the input of the IC\'s dedicated EN/U and Dn/D pins.

Features and Benefits

The A4984SETTR-T offers several features and benefits to its users, such as:

• The A4984SETTR-T\'s P-channel and N-channel MOSFETs are designed to provide high efficiency, low R DS(ON) and excellent thermal stability.
• It requires a single supply voltage to operate, allowing for easy and flexible power delivery.
• The A4984SETTR-T includes a thermal cooling mechanism, preventing the motor from overheating.
• The output stages have low on-resistance, providing high power efficiency and minimal power loss.
• The IC features a powerful on-chip logic gate that supports synchronous motor control.
• Its built-in current sensing circuitry prevents the motor from being overloaded.

Application Examples

Examples of applications for the A4984SETTR-T IC include consumer/industrial fans, cooling systems, and robotics. It is typically used in home appliances, commercial products, and other devices that require precise and reliable motor control. This IC can also be used in consumer robots, autonomous vehicles, 3D printers, and other applications that need low- to medium-power solutions.

Working Principle

The A4984SETTR-T IC consists of two main components: the drivers and the control logic. The drivers are responsible for controlling the current flow to the motor. They use Pulse Width Modulation (PWM) signals to regulate the amount of current that is sent to the motor. The control logic is used to monitor the current and protect the motor from overloading or overheating. It also provides various features, such as current sensing, over-current protection, and thermal shutdown.

In order to operate the A4984SETTR-T IC, a PWM signal must be applied to the EN/U and Dn/D pins. This signal determines the direction and the speed of the motor, as well as the amount of current that is sent to the motor. The drivers take this signal and convert it into a continuous current flow that is sent to the motor. The control logic then monitors the flow of current and ensures that the motor is not overloaded or overheated.

Conclusion

The A4984SETTR-T is an integrated circuit from Allegro MicroSystems that provides efficient motor control and power supply solutions for low to medium power applications. It consists of drivers and control logic that can be used to control the direction and the speed of the motor. This IC also provides features such as current sensing, over-current protection, thermal shutdown, and crossover-current protection. The A4984SETTR-T can be used in a wide range of applications, such as consumer/industrial fans, cooling systems, robots, 3D printers, and autonomous vehicles.

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