UCC2976PW

UCC2976PW Application Field and Working Principle

UCC2976PW is a highly efficient, constant current sink PWM controller. It is a PMIC (Power Management - Specialized) device manufactured by TI (Texas Instruments). This constant current sink controller is used for driving LEDs in various applications such as automotive video displays, LCD backlights, and RGB LEDs.

UCC2976PW’s main feature is its high efficiency power conversion, which reduces heat losses. It maintains a constant current throughout the PWM switching cycles with adjustable current level up to 200mA. The device also includes frequency and width modulation for dimming control. Additionally, protection features are included for fault protection.

The working principle of the UCC2976PW is quite simple. A voltage is applied to the input side of the device and a constant current flows in the output side. The voltage is monitored by the inputs of the device, and the current is adjusted accordingly, depending on the voltage. A ramp signal provides the required timing control for the PWM operation, allowing for a dimming control.

The UCC2976PW can be used in a wide variety of applications, such as automotive video displays, LCD backlights, and RGB LEDs. Its features make it a great candidate for driving those type of devices. It can be used in a wide operating temperature range from -40°C to +125°C, making it an ideal solution for extreme temperature applications.

UCC2976PW is a highly efficient PWM dimming LED controller with a host of features that make it a reliable choice for driving LEDs in various applications. Its adjustable current level of up to 200mA and wide operating temperature range make it an ideal choice for many LED driving applications.