FAN4860UC54X Integrated Circuits (ICs)

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FAN4860UC54X Application Field and Working Principle

The FAN4860UC54X is a power management integrated circuit (PMIC) belonging to the family of DC-DC switching regulators. This device is designed to provide isolated, adjustable, and high power DC-DC converter output voltages ranging from 3.9V to 18V and can handle up to 54W of power, making it a great choice of regulator for audio, automotive and consumer electronics applications.

Overview

The FAN4860UC54X integrates an adjustable voltage regulator and power supply, programmable input current limit, and external driver circuit required to create DC to DC converters. This system provides a board-level solution for applications in consumer electronics such as audio amplifiers, automotive systems, and other consumer and industrial applications where isolated and adjustable power supplies are required.

Key Features

The FAN4860UC54X has several key features that make it an attractive choice for DC-DC converter applications, including:

• Input Voltage Range up to 18V
• Output Voltage Range (Adjustable) from 3.9V to 18V
• Efficiency of up to 95%
• High Power Output up to 54W
• No External Boost or Buck MOSFET Drivers Required
• Integrated Control, Protection and Soft Start Circuits

Application Field

This integrated PMIC is well suited for compact, low-power consumer electronics applications. It is also suitable for automotive, industrial and audio applications where adjustable and isolated power is required. It is also capable of up to 95% efficiency without the need for external drivers.

Working Principle

The FAN4860UC54X PMIC consists of an input current limit and an integrated soft start that set the output voltage at the required level. A voltage feedback loop is used to keep the output voltage accurately regulated within the allowed input voltage range. The output voltage is adjusted using an external resistor divider, with the minimum and maximum values defined by the output of the current limit and the integrated soft start circuit. The current limit can be adjusted using an external RC network for precise voltage control.

Conclusion

The FAN4860UC54X PMIC provides an efficient, isolated and adjustable DC-DC converter solution for a range of applications, including consumer electronics, audio, automotive and industrial. Thanks to its integrated current limit, soft start circuitry and programmable input current limit, it is an ideal choice for efficiently providing adjustable output voltages in a range of different applications.

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