ZXLD1366ET5TA Integrated Circuits (ICs)

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ZXLD1366ET5TA Application Field and Working Principle

ZXLD1366ET5TA is a kind of PMIC (Power Management Integrated Circuit) - LED drivers. PMIC - LED drivers are specialized circuits designed to control the power delivered to LEDs. When properly used, they lower energy consumption while enabling LEDs to operate over a wider range of temperatures, longer lifetime, and greater brightness. ZXLD1366ET5TA is designed primarily for notebook and tablet PCs and other applications where backlighting drive stage powers VLED and WLED.

Application Field

The most common application for the ZXLD1366ET5TA is for notebook and tablet PCs and other applications, where the backlighting drive stage powers VLED and WLED. It is also a great choice for small-scale LED control, including signage, channels and boards, street lighting, and automobiles. Besides, it is also suitable for such applications as white LED phones at the earpiece or in the background.

Main Features

The ZXLD1366ET5TA offers efficient LED dimming control, with resistance and PWM dimming. It is designed for high efficiency and low EMI, reducing the need for additional shielding. It also offers reduced power dissipation and cost effectiveness, with 4kHz switching frequency, programmable internal oscillator, 1.8V and adjustable constant off-time PWM dimming. Additionally, it features overvoltage, overcurrent, and short circuit protection, and can drive up to 50mA of current at 32V.

Working Principle

The working principle of ZXLD1366ET5TA is based on the intensity of the light source it is driving. With the constant off-time PWM dimming, when the light source is at its highest level, the highest voltage is applied, and the voltage gradually decreases as the input decreases. Thus, the light will decrease accordingly, until the voltage reaches zero.

The ZXLD1366ET5TA LED driver also offers resistance dimming and programmable internal oscillator. With resistance dimming, an external resistor is used to control the current passing through the LED. With the internal oscillator, the LED current is modulated using a ripple current, which allows for smooth dimming even at low brightness levels.

Overall, the ZXLD1366ET5TA LED driver is designed to be a cost effective and efficient solution for applications where backlighting drive stage powers VLED and WLED. It provides efficient LED dimming control, reducing power dissipation and cost, and offers protection against overvoltage, overcurrent, and short circuit. Additionally, with resistance and PWM dimming, as well as a programmable internal oscillator, the ZXLD1366ET5TA is suitable for small-scale LED control in a wide range of applications.

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