FAN6605MX

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Power Management IC (PMIC) is a type of integrated circuit designed to manage and supply power to electronic equipment. The main purpose of PMIC is to reduce system cost, power consumption and the number of external components used. One type of PMIC is an AC/DC converter, which allows AC input signal to be converted into DC output. They are widely used in power supplies and voltage regulator applications. Another type of PMIC is an offline switcher, which is used to generate a DC or AC output from a DC input. It is often used for applications such as switching power supplies and voltage regulators. One of the most popular PMICs is the FAN6605MX.

The FAN6605MX is a low-cost, non-inverting single-channel monolithic switch-mode PWM controller for switch current up to 1.5 A. It is designed for offline flyback converters. It features low quiescent current, lower frequency switching and reduced EMI emissions. This makes it an ideal choice for standby power applications.

The application field of FAN6605MX mainly includes computing, home entertainment, TV display, lighting, monitor and personal electronic device. It has been widely used in notebooks, monoblock PCs, LCD/PDP TVs, and TV receivers. The low Vcc under voltage lockout (UVLO) of FAN6605MX is 3 V, which extend the application field of this device.

The working principle of FAN6605MX is based on pulse width modulation (PWM) mode. The output of the controller is a pulse width modulated signal, with a frequency determined by a fixed internal oscillator. The width of the pulse is set by the voltage on the CTRL pin. When the CTRL voltage is at its peak (high), the pulse will be left at its maximum width for the longest duration possible. When it reaches its lowest voltage (low), the output pulse will be at its minimum width. This pulse width is then used to control the output of the switch-mode power supply.

The FAN6605MX features over voltage protection and over current protection for a safe working conditions and longer product life. It also has an adjustable soft-start feature which eliminates current and voltage surge when power is applied, as well as a frequency hopping function to reduce EMI noise. The FAN6605MX is RoHS compliant, and comes in a small SOP-8 package.

In conclusion, the FAN6605MX is a highly functional, low cost, and easy to use, monolithic single channel switch mode controller. Its low voltage lockout range and wide application field makes it an ideal choice for standby power and power supply applications. Its over voltage and current protection, frequency hopping, and soft start features, reduces system cost and ensures safe and reliable operation.

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