ISL97632IRT26Z-T

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The ISL97632IRT26Z-T is a high-efficiency, low-power, monolithic, integrated LED dimming/strobe power supply specifically designed for LED backlight applications. As a PMIC LED drivers, it integrates the gate drivers and active bridge pre-drivers to provide a fast and continuous LED dimming/strobe control with a minimum of external components.

Compared with traditional analog dimming methods, the use of pulse width modulation (PWM) can provide smoother, more uniform, and more accurate dimming and strobe backlighting in a wide variety of applications such as laptops, digital picture frames, and LCD TV backlighting. Furthermore, the ISL97632IRT26Z-T is designed to take advantage of the output current precisely controlled features of PWM ICs, enabling a faster dimming response and more efficient operation.

The main application field of ISL97632IRT26Z-T is LED backlighting for LCD display modules. It can be applied to indoor or outdoor LCD screens for mobile phones, tablets, laptops, TV, and other displays. Thanks to its high efficiency, low power consumption and excellent dimming/strobe performance, the ISL97632IRT26Z-T makes it an ideal choice for LED backlighting.

As far as working principle is concerned, in LED backlighting, the LED current is regulated by controlling the duty cycle of the PWM signal. The ISL97632IRT26Z-T provides a buck-boost power factor correction (PFC) output stage that operates at a frequency of up to 500KHz, with a variable output current of up to 5A and a variable buck/boost operating range of 4V to 32V. Since the duty cycle of the PWM output is directly proportional to the output current of the converter, the current of the LED can be controlled directly by varying the duty cycle of the PWM signal. The ISL97632IRT26Z-T has an analog dimming control input with a gain of 0.5V/A, allowing the user to precisely control the LED current by adjusting the input voltage.

The ISL97632IRT26Z-T provides a wide range of features such as automated output channel shutdown, adjustable channel timeouts, output current tracking, and short-circuit protection that make it especially attractive to system designers. In addition, the device’s small package size (8mm x 8mm) make it a suitable choice for space-constrained applications.

The ISL97632IRT26Z-T is a versatile and efficient PWM-based LED dimming/strobe power supply for LED backlighting applications. It offers high-efficiency, low-power, monolithic integrated control in a compact package, making it an ideal choice for LED backlighting applications. With its wide range of features such as automated output channel shutdown, adjustable channel timeouts, output current tracking and short-circuit protection, the ISL97632IRT26Z-T offers system designers excellent performance and reliability at an affordable cost.

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