AL1794AFE-13 Integrated Circuits (ICs)

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AL1794AFE-13 is an advanced LED driver product, which is categorized into Power Management Interface Circuits (PMIC) - LED Drivers, and is specifically developed to reduce the complexity and cost of LED backlighting systems. It is a compact, highly efficient, and cost-effective solution that incorporates a DC/DC step-up converter and active buck controller to drive up to 25 LEDs in multiple-string configuration and for a variety of backlighting applications.

An AL1794AFE-13 is designed to provide a simple, efficient and cost effective power control solution for backlighting system designs. It provides accurate current regulation and initial accuracy when driving strings of LEDs with a current regulation range of 0.22A - 13A. The device also offers excellent power efficiency and low voltage levels, as well as providing an industry-standard lighting interface with PWM dimming capabilities.

The application field of AL1794AFE-13 is wide and covers various applications such as automotive and industrial lighting, LCD backlighting, display backlighting, and general lighting. The device is suitable for driving multiple linear strings of high power LEDs in both DC and AC (with integrated switchmode power supply) configurations. The driver supports current sinks from 0.2A to 13A, with a typical efficiency up to 98%. The device features a wide input voltage range (4.5V to 60V), making it suitable for a variety of battery operated and AC mains powered applications.

The working principle of AL1794AFE-13 works based on the Boost-buck topology. In a Boost-Buck topology, a buck converter is used as the input converter and a boost converter is used as the output converter. The input buck regulator controls the LED strings with a regulated output current. The boost converter is then used to boost the LED current up to levels suitable for the LEDs to operate at their desired brightness. This topology helps in providing optimal efficiency and low power loss.

The AL1794AFE-13 also features a number of safety features, such as short-circuit and over-temperature protection. It also features an adjustable soft-start time, programmable open/short LED protection, and over-voltage protection.//Finally, the device includes a 3-wire serial interface, which enables it to be programmed and configured to provide a wide range of lighting profiles according to the customer’s requirements.//

In summary, the AL1794AFE-13 is an advanced LED driver product that is designed to reduce the complexity and cost of LED backlighting systems. It is designed to provide a simple and efficient power control solution for a variety of backlighting applications. The device offers excellent power efficiency and low voltage levels, as well as a lighting interface with PWM dimming capabilities. It also integrates a number of safety features, such as short-circuit and over-temperature protection. It is a cost-effective and versatile solution for LED applications.

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