SC668ULTRT

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Introduction to SC668ULTRT

The SC668ULTRT is a PMIC (Power Management Integrated Circuit) designed specifically to drive LEDs with high efficiency. It is a highly integrated system with a linear regulator, two-phase step-down converter and integrated MOSFETs/LED drivers. The SC668ULTRT is designed to operate from an input voltage of up to 36V and provide up to 160W of power. The integrated MOSFETs/LED drivers provide for two independent current sources for driving two strings of LEDs. The MOSFETs can be driven with PWM signals to enable dimming of the LEDs.

Application Field of SC668ULTRT

The SC668ULTRT is used to power and control LEDs in a variety of applications. It is well suited for LED backlighting in LCD displays and LED lighting solutions in automotive and industrial applications. It is also suitable for driving high power LED lighting in applications such as billboard displays and architectural lighting. The SC668ULTRT can also be used in communication equipment and other applications that need a high efficiency power supply.

Working Principle of SC668ULTRT

The SC668ULTRT is a two-phase regulated step-down converter. It consists of two identical DC/DC converter channels, each with its own independent current source. Each channel is driven by a separate PWM (pulse width modulation) signal, which allows for independent dimming of the LEDs. The two DC/DC converter channels provide high power efficiency and a wide output voltage range. Each DC/DC converter is also equipped with an internal regulator that ensures the output current is kept under control.

When the two PWM signals are combined into one, the brightness of the LEDs is increased proportionally. This allows for fine tuning of the output current and brightness of the LEDs. The SC668ULTRT also incorporates a linear regulator which provides constant current regulation, allowing the LEDs to be driven at the same current regardless of variations in the input voltage.

The SC668ULTRT can be used to drive multiple strings of LEDs with different PWM signals, allowing for even more control over the LED brightness. The SC668ULTRT can also be used to drive LEDs in parallel, which increases overall efficiency. It is also possible to use the SC668ULTRT to monitor the LED current, temperature and other parameters, allowing for even more precise control.

In summary, the SC668ULTRT is a high power, highly efficient LED driver and power management integrated circuit. It is well suited for LED lighting and display applications, and can provide a wide range of LED current and brightness settings. The integrated regulation and current monitoring features of the SC668ULTRT make it an ideal solution for LED drivers that require accuracy, efficiency, and robustness.

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