LD2981CU18TR

The LD2981CU18TR is a three-terminal adjustable linear voltage regulator specifically designed for low voltage, high current applications in automotive, computer, and industrial control systems. It is a power management IC (PMIC) with integrated voltage regulator. In these applications, the LD2981CU18TR is used to provide a stable voltage source to a load with more than 18V of input voltage.

The LD2981CU18TR is available in several versions, each optimized for different applications. The LD2981CU18TR is a low dropout adjustable linear voltage regulator (LVR). It features an output voltage range of 1.2 to 18V, a maximum output current of 5A and a maximum dropout voltage of 0.5V. It also features integrated protection against over-current, over-temperature and over-voltage conditions.

The working principle of LD2981CU18TR is based on an internal linear voltage regulator. In this configuration, an internal voltage reference and two resistors are used to create a voltage divider. The output voltage of the LD2981CU18TR is determined by the ratio of the two resistors. When a load is applied to the LD2981CU18TR, the output voltage will drop. The controller will then adjust the output voltage to maintain the desired level.

The LD2981CU18TR is designed for a wide range of applications, including automotive, computer and industrial control systems. In automotive applications, the LD2981CU18TR can be used to provide a stable voltage source for components such as ECUs and sensors. In computer applications, the LD2981CU18TR can be used to provide power to the motherboard and other components, such as GPUs and CPUs. In industrial control systems, the LD2981CU18TR can be used to provide a stable voltage source for motor controls, PLCs and other components.

The LD2981CU18TR is a reliable and cost-effective solution for low voltage, high current applications. It features high output current capability and low dropout voltage, making it suitable for applications where battery or other DC sources are used. It also provides integrated protection against over-current, over-temperature and over-voltage conditions.