ISL97683IRTZ-T

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The ISL97683IRTZ-T is a highly efficient and programmable switching regulator for driving LEDs. It is part of the Power Management IC (PMIC) series and is widely used in many applications such as automotive, portable consumer and consumer electronic devices. It is designed to provide a range of output current levels from 0.67 A up to 45 A. This makes it possible to supply the precise amount of current needed to illuminate LEDs with a wide range of brightness levels. This regulator also features a variety of protection and diagnostic functions that ensure reliable operation when driving LEDs. In this article, we will discuss the application field and working principle of the ISL97683IRTZ-T PMIC LED driver in more detail.

Application Field of ISL97683IRTZ-T PMIC LED Driver

The ISL97683IRTZ-T PMIC LED driver is designed for applications that require precise control of LED current levels. These applications include backlighting for LCD screens and keyboards, interior and exterior automotive lighting, decorative lighting for retail stores and restaurants, architectural lighting for office buildings, and lighting for healthcare, hospitality, and educational facilities. Additionally, this device is suitable for powering ambient light sensors, as well as for powering and controlling RGB LED strings. The ISL97683IRTZ-T PMIC LED driver is also used in industrial and consumer electronic products, including displays, gaming systems, audio systems, and power tools.

Working Principle of ISL97683IRTZ-T PMIC LED Driver

The ISL97683IRTZ-T PMIC LED driver operates by pulse width modulation (PWM). This device is an integrated circuit (IC) that contains an inductor, a switch, an error amplifier, and other components. The operating principle is based on the Buck topology (Step Down topology). When the EN/SET pin is enabled, the error amplifier controls the duty cycle of the switch to ensure the required voltage at the output is maintained, thereby maintaining the required current level to the LEDs. The switching frequency of the ISL97683IRTZ-T is adjustable from 500 kHz to 2 MHz for optimizing efficiency when multiple LEDs are connected in series.

Features and Benefits

The ISL97683IRTZ-T PMIC LED driver has several features and benefits that make it suitable for a wide range of applications. It has an enhanced switching current limit, a higher input voltage range, and a wide output voltage range. It also offers on-board temperature and short-circuit protection, as well as adjustable over-voltage protection. In addition, this device has a programmable soft-start feature, adjustable dimming control, and a mode select pin that provides additional flexibility when driving LEDs. Other features include adjustable output current, adjustable frequency, programmable current limiting, and a wide temperature range.

Conclusion

The ISL97683IRTZ-T PMIC LED driver is a highly efficient and programmable switching regulator for powering LEDs. This device is designed for applications that require precise control of LED current levels, such as backlighting for LCD screens and keyboards, automotive lighting, and RGB LED string applications. It operates by pulse width modulation (PWM) based on the Buck topology and has numerous features and benefits that make it suitable for a wide range of applications. The ISL97683IRTZ-T PMIC LED driver is available in a 4 mm x 4 mm QFN package and provides an efficient solution for driving LEDs in a wide range of applications.

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