LT3477EFE#PBF

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PMIC (Power Management Integrated Circuit) is an essential component of modern electronic devices. It regulates, converts, and distributes power to various components of the device. This can help to reduce overall power consumption, improve device performance, enhance safety, and extend battery life. Nowadays, PMICs are increasingly being used in a wide range of consumer electronic applications, such as mobile phones, data processors, automotive systems, and home appliances. In this article we will focus on one particular type of PMIC, LED Drivers, and look at the LT3477EFE#PBF application field and working principle.

LED Drivers are commonly used to provide a direct current (DC) power source for LEDs. The LT3477EFE#PBF is a flexible LED driver designed to provide an optimum experience in LED lighting. It is a low-voltage, high-efficiency LED power supply chipset with built-in optimized power topology. It uses an adjustable AC/DC flyback full-bridge architecture process with a current-mode switching scheme to deliver power to the LED load. It is ideal for a wide range of LED lighting applications including general lighting, automotive lighting, and decoration.

The LT3477EFE#PBF features a frequency jittering technique which is used to reduce EMI emission in the output stage. In addition, it boasts a low input to output voltage differential of 10mV and low quiescent current of only 20μA. Furthermore, the LT3477EFE#PBF has a maximum power delivery of 20 W, and a maximum current of 350 mA. It is available in an ultra-compact 8-pin WSON package which is easy to mount on board.

The LT3477EFE#PBF working principle is quite simple. When a DC voltage is applied across the input terminals, the device will convert the voltage into a high-frequency alternating current (AC) and pass this AC current through an inductor. This creates a magnetic field which then induces a voltage in the LED load, producing light. The device supports multiple modes of operation, including Pulse Width Modulation (PWM) mode and constant current (CC) mode. In CC mode, the output voltage values can be varied in both positive and negative directions.

The LT3477EFE#PBF is a highly efficient LED driver chip, which provides an ideal solution for LED lighting applications. With its simple yet powerful working principle and its low input to output voltage differential, the LT3477EFE#PBF can help to reduce EMI emissions and extend the lifetime of LED lights.

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