LYT4222E3

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The LYT4222E3 is a highly versatile AC/DC converter designed for use in a variety of offline and automotive applications. It uses a buck-boost architecture to convert an unregulated AC/DC input voltage into a DC output voltage with a current range of up to 3A. The device can be used in offline or switched-mode power supplies, as well as in automotive systems such as headlights, power windows, and door locks. The LYT4222E3 is capable of providing a wide range of output voltages without the need for external components, making it an ideal choice for a variety of applications.

Features

The LYT4222E3 features a high-efficiency synchronous buck-boost architecture, allowing it to operate over a wide range of input voltages. It also has an adjustable blanking time to eliminate unwanted inrush currents and surge voltages, as well as integrated short-circuit, over-voltage and over-temperature protections. The device is available in a highly efficient, small form-factor package, making it ideal for space-constrained applications. It is also RoHS-compliant, making it an environmentally friendly choice.

Applications

The LYT4222E3 is designed for use in a variety of applications, including:

• AC/DC Converters
• Front End Power Supplies
• Offline Switchers
• Automotive Headlight Systems
• Power Windows and Door Locks
• Mobile Phone Chargers and Adapters
• Medical and Test Equipment
• Consumer Electronics
• Portable Electronics

Working Principle

The LYT4222E3 uses a synchronous buck-boost topology to generate an output voltage from an unregulated AC/DC input of up to 3A. The device’s operating frequency can be programmed to reduce harmonic content and improve light load efficiency.

During operation, the LYT4222E3 boosts the input voltage to the desired level, while managing the output current by controlling the inductor current through the power switches. The device also incorporates an adjustable blanking time, enabling it to eliminate the inrush current typically associated with buck-boost converters.

The LYT4222E3 also features integrated over-voltage, over-current, and over-temperature protection, allowing it to operate safely in a variety of applications. The device is housed in an industry-standard, RoHS-compliant package, making it suitable for space-constrained applications.

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