AL9910SP-13 Integrated Circuits (ICs)

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AL9910SP-13 is a constant current LED driver chip developed by Alpha&Omega Semiconductor Inc. It is part of the company’s proprietary PMIC (Power Management IC) product line and is specifically designed for driving and controlling high power LEDs in next generation lighting applications. It is available in a 3.3V Voltage Input and can drive up to 350mA of current, making it an ideal solution for high-power LED lighting applications such as backlighting and general illumination. This article will explore the application field and working principle of AL9910SP-13 and how it can be used to improve efficiency and performance.

The AL9910SP-13 provides a simple, single-channel LED driving solution that can be used for a variety of applications. The chip can be used to drive both single LED or LED arrays, making it ideal for LED lighting applications. The LED driver provides a low ripple output that is constant and predictable, allowing users to easily adjust their LED driving schemes. The AL9910SP-13 also supports a wide range of input voltages, from 3.3V to 45V, making it possible to use this chip in a variety of power supplies and applications. In addition to its wide range of input voltage, the AL9910SP-13 also features an integrated temperature protection function and over-current protection for added safety. In terms of its output, the chip can produce up to 350mA of current, with a low ripple that enables more precise control than a typical PWM-based driver.

The working principle of the AL9910SP-13 is straightforward and relies on the use of a PFC (Power Factor Correction) technique. This technique is used to reduce power losses and improve the overall efficiency of the chip. In the case of the AL9910SP-13, the PFC works by increasing the efficiency of the input AC to DC conversion process. This is accomplished by using a power factor controller to adjust the phase angle and amplitude of the incoming AC current. This helps to reduce power losses and improve the overall efficiency of the chip.

The AL9910SP-13 also offers a high-precision constant current output, enabling users to easily adjust the output current for their desired result. This constant current output is achieved by using an integrated Buck-Boost converter that utilizes Pulse Width Modulation (PWM) to control the output voltage. By controlling both the input and output of the device, the AL9910SP-13 is able to maintain a consistent luminous flux, making it ideal for LED lighting applications.

In addition to its PFC technology and high-precision constant current output, the AL9910SP-13 also provides a build-in open lighting detect (OLD) circuit. The OLD circuit allows the chip to detect an open LED and automatically shut off the LED driver circuit. This ensures that no current is flowing through the LED, preserving its efficacy and helping to maximize the life of the LED.

The AL9910SP-13 is an ideal solution for a wide variety of LED lighting applications. Its wide range of input voltage, built-in PFC technology and integrated open lighting detection circuit help to maximize efficiency and performance and ensure a consistent luminous flux. Its easy to use and straightforward design makes it a reliable and cost-effective solution for any LED driver application.

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