AS3693C-ZTQT

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LED drivers are a key technology and one of the most important product categories within the power management integrated circuits (PMIC) market. LED drivers are primarily used in LED lighting applications such as LED bulbs and LED light bars for both residential and commercial use. LED drivers are used to regulate and transform an input power supply to drive an LED Light Engine. As LED lighting technology continues to be developed and implemented at scale, LED drivers continue to be one of the most important components of the overall LED lighting application. As such, they are an essential piece of the power management IC (PMIC) technology.

AS3693C-ZTQT is a LED driver IC designed by Alpha & Omega Semiconductor Ltd. (AOS) that can be used in various LED applications, including LED light-emitting diode (LED) lighting, LED street light control, LED automotive headlights control, and LED indication & backlighting. It is well-suited for a variety of LED light sources ranging from 1W to 3W conversion efficiency.

The AS3693C-ZTQT features a large dynamic range for input voltage, allowing for a wide range of output power from 1W to 3W. It also features an array of integrated oscillation, ripple divider, photodiode, and adjustable VCC functions, allowing for the creation of a highly efficient and compact design without the need for additional external components. The AS3693C-ZTQT can be used both in buck and boost configurations, making it suitable for a wide range of LED applications.

In terms of its operating principle, the AS3693C-ZTQT\'s integrated buck converter generates a stable output voltage proportional to the input voltage. The oscillator sets the switching frequency of the buck converter, and the ripple divider adjusts the voltage loop gain to optimize system efficiency and LED lifetime, while the photodiode keeps the LED current within the maximum allowed value by adjusting the feedback voltage level. The adjustable VCC functionality sets the minimum feedback voltage level of the LED driver circuit and adjusts the VCC pin voltage in accordance with the LED current.

In addition, the AS3693C-ZTQT features a wide input voltage range from 3V to 16V and a thermal shutdown function to protect the IC from temperature rises. It also includes an array of protection features to improve system reliability and durability, including overload protection, surge protection, and overvoltage protection.

To conclude, the AS3693C-ZTQT is a flexible and highly efficient LED driver IC suited for a variety of LED applications. It features a wide input voltage range and an array of integrated functions including an oscillator, ripple divider, photodiode, and adjustable VCC, as well as protect and thermal shutdown features to maximize system reliability and lifetime. The AS3693C-ZTQT is thus a popular choice for LED driving in professional applications.

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