BD7903FS-E2

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Power management integrated circuits (PMICs) are devices used for controlling and managing power in electronic systems. PMICs are highly efficient and within their component package offer a wide range of power management and control functions. One example of a PMIC that falls under the Motor Drivers, Controllers category is the BD7903FS-E2.

The BD7903FS-E2 is an over-current and over-heat protection IC with a direct connection of two full bridges and a half power bridge. It is used in a variety of applications in the automotive field, such as vehicle power accessories and brake lights. This device has several features that make it an ideal choice for automotive applications, such as its level shifting system, high speed switching and fault feedback signal.

The BD7903FS-E2 has an operating voltage range of 6.5 to 18V and a maximum supply current of 200mA. It has a power dissipation of 4W, a peak output current of 1.2A and a peak limit voltage of 0.4V. The device provides an over-current and over-heat protection signal to prevent short circuit and overload conditions. Additionally, the BD7903FS-E2 features an internal speed-down current limiting circuit, a fast over-current compensation circuit, and an internal high-side start-up protection. This device also has a high-current-capacity over-current protection circuit that is ideal for controlling stepping motors and DC motors.

The working principle of the BD7903FS-E2 is fairly straightforward. When the controller is activated, its switching elements actuate to control the current flow to the motor. When its over-current detection circuit detects a current overload, it sends out a signal that shuts off the power supply, preventing further overload and potential damage to the motor. Additionally, it has a high-efficiency speed control switch that allows the voltage to adjust when there is a sudden load change. The device also has an over-heat protection circuit that is activated when it detects excessive heat in the control IC. This prevents the device from overheating and damaging the motor.

The BD7903FS-E2 is ideal for a variety of automotive applications, such as vehicle power accessories, brake lights, and other motor control systems. It has a robust over-current and over-heat protection system that provides reliable protection against potential overloads and motor damage. Additionally, its fast switching speed, level shifting system, and high current capacity make it a great choice for automotive applications.

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