LB11851FA-AH

PMIC - Motor Drivers, Controllers

The LB11851FA-AH is a multifunctional integrated circuit from Mitsubishi Electric Corporation. This device is designed to provide two motor channels and one main input voltage channel. It is capable of operating in a range of conditions, including high-temperature, low-voltage, and high-voltage environments. The LB11851FA-AH is also able to provide a precise, programmable speed control, which can help to minimize the risks associated with sudden changes in workload. Additionally, this device also includes protection mechanisms for both the motor and the power supply, helping to ensure the safety of the system.

Application Field

The LB11851FA-AH is primarily used in industrial applications, such as general motors and mechanical equipment. It is ideal for applications where precise and repeatable speed control is necessary, such as when controlling the speed of pumps, fans, and other types of motors in industrial settings. Additionally, this device is capable of handling a wide range of input voltages, making it suitable for both high voltage applications, such as in automotive systems, as well as low voltage applications, such as in household appliances.

Working Principle

The LB11851FA-AH is a switched-mode power supply, which utilizes pulse width modulation (PWM) to convert the incoming AC power into a DC voltage. This DC voltage is then used to drive the motor\'s motor controller. The motor controller is the key component in this device, as it is responsible for controlling the speed of the motor. The controller uses information from the current and voltage sensors to control the output voltage and current, allowing it to execute precise, programmable speed control, as per the specific requirements of the application.

The LB11851FA-AH also includes a number of protection mechanisms. These include short-circuit and over-voltage protection, which prevents dangerous situations from arising due to fluctuations in voltage and current. Additionally, the device also includes thermal protection, which helps to protect the motor from damage if the ambient temperature rises above a certain level. This helps to ensure the safety of the system and prevents any unwanted harm.

Conclusion

The LB11851FA-AH integrated circuit from Mitsubishi Electric Corporation is a versatile and reliable device, capable of providing precise speed control in a variety of applications. Additionally, the device also includes a number of protection mechanisms, making it suitable for use in demanding industrial and automotive environments. As a result, the LB11851FA-AH is an attractive choice for applications where precise speed control, reliability, and safety are all paramount.