A3901SEJTR-T Integrated Circuits (ICs)

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A3901SEJTR-T is a monolithic Motor Driver PMIC designed for maximum flexibility and designed to be easy to use in a wide variety of applications. The device features a low quiescent current bi-directional motor control IC with built in under voltage protection and over temperature protection, dual MOSFET outputs, a synchronous rectifier, and a current limited output.

The A3901SEJTR-T has many application fields across industries, including the medical, automotive, and industrial fields. Additionally, the device is well suited for use in a wide range of motor control applications such as home automation, cordless routers, DC motors, and brushless DC motors. The device is also suitable for use in a wide range of battery charging applications.

The A3901SEJTR-T uses a simple driver circuit to provide a smooth speed control of motors. The circuit is made up of two field effect transistors (FETs) and two drivers (one low side and one high side) with built-in over current, over voltage, under voltage and short circuit protection. The FETs are located in the line between the power supply and the motor, and the driver circuit is located between the controller and the FETs. The circuit can efficiently operate at a wide range of PWM frequencies, allowing for low frequency operation for applications such as fan motors. The device also has a high slew rate capability, providing fast transient response for applications such as a servo motor.

The A3901SEJTR-T works by applying a PWM signal to the drivers, which causes them to either source or sink current to the load. The drivers are designed to reduce switching losses and enhance the efficiency of the circuit. Additionally, the device features a synchronous rectifier that helps reduce the power dissipation of the PWM Driver and reduce the amount of heat generated.

The A3901SEJTR-T also features a current limited output which helps the device protect itself against over current and over voltage conditions. The current limit is programmed through two external resistors and can be adjusted from 0.25A to 2A. When the current limit is reached, the device will shut itself off in order to protect itself from over current or over voltage conditions.

The A3901SEJTR-T provides advanced power management and control for a wide variety of motor control applications. With its built-in fault protection, current limited output, and wide operating range, the device is a reliable and effective solution for motor control and battery charging applications.

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