LB11847-E

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PMIC - Motor drivers, controllers, and the LB11847-E are some of the devices used to manage the motion of motors and other electrical components. They are often necessary when handling high-power applications that require precise and accurate control of the motor. In this article, we will look at the application fields, functions, and working principle of the LB11847-E.

LB11847-E is an integrated, low-voltage motor driver IC manufactured by Leadtrend Technology Co Ltd. It is a full bridge driver IC that can deliver 3 to 10A current with a 4V to 7.5V supply voltage range. The low voltage operation makes the IC ideal for applications like toy, printer, and a host of other motors with low-voltage power sources. It also features a slew rate control option that allows the user to choose between fast and slow rise and fall times for the motor’s speed.

Applications for the LB11847-E include electric vehicle motors, printer/copy machines, computer fans, household appliance, toys, 3D printer stepper motors, direct drives, and others. This motor driver is also suited for power management in industrial, automotive, and infrastructure markets.

The LB11847-E has several key features that make it suitable for these applications. First of all, the device has a very high current capacity, which makes it suitable for high-power applications. It also supports PWM, H-bridge, braking, reverse, and speed control modes, which makes it suitable for a wide range of motor control applications. Moreover, it can control motors with up to 6.5A current and has a switching frequency of 10KHz. The LB11847-E can also be used in a microprocessor-based system, to provide precise and accurate control of motors.

The working principle of the LB11847-E is based on the H-bridge driver topology, which is a simple way to drive a motor in both directions. When the voltage across the motor is zero, the motor doesn’t move. The LB11847-E continuously switches the motor’s voltage so that it can be moved in both directions. The power switching is controlled by two inputs, IN1 and IN2. Depending on the logic level of these two inputs, the LB11847-E switches the motor’s voltage in four different combinations to provide direction control and speed control.

In addition to the H-bridge design of the LB11847-E, the device includes several other features. The device includes thermal protection and under-voltage lockout protection to prevent damage to the motor and over-current protection to monitor and protect the output current. The device also includes a slew rate control option, which allows the user to control the rise and fall time of the output voltage. It also includes a shutdown input, which allows the user to shut down the output voltage at any time.

Overall, the LB11847-E is a versatile and reliable motor driver IC that is suitable for a range of applications. It is powerful enough for high-power applications, yet flexible enough for various motor control applications. It is also highly scalable, allowing for a wide range of operating conditions. Moreover, the device’s H-bridge design and slew rate control make it well suited for both low- and high-speed applications.

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