LYT4211L

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LYT4211L is a specialized power management integrated circuit (PMIC) designed with cost, efficiency and system integration in mind. The integrated circuit is a single-chip, 4-port AC/DC, offline switcher and provides numerous advantages for system developers. With its wide operating temperature range, low RDSON integrated power MOSFETs and full-bridge topology, it is designed to minimize system costs and minimize complexity.

For system designers, the LYT4211L offers an integrated solution that can reduce required board space and cost compared to discrete solutions while providing optimal efficiency. The integrated circuit can operate across a wide input voltage range of 9–75 V and provides up to three power-conversion ports with an output power range of up to 8 W. The fourth port is an always active 1 W output with an adjustable output voltage range of 0.75–6 V.

The LYT4211L is capable of either synchronous or flyback topology conversions, depending on the required application. For applications requiring high bandwidth and transient response, the integrated circuit is designed to operate in synchronous rectification, offering a low-capacitance solution with minimized leakage inductance for improved system performance. When efficiency is the highest priority, the integrated circuit critical-mode flyback, or quasi-resonant, topologies optimize efficiency while providing significant system level noise improvement.

The AC/DC switcher is suitable for a variety of applications, such as LCD TVs and monitors, household appliances, AC/DC adapters and other home applications. With a range of features and optimization tools, it is ideal for various power requirements and is designed to maximize system efficiency and reduce overall solution size and cost.

For optimized thermal management and safe operation, the integrated circuit is designed to operate over a wide temperature range of up to 100 °C. The critical-mode flyback topology is optimized for efficiency, thus providing robust performance for system level thermal and safe operation. The integrated circuit provides a wide range of protection features, including overvoltage and overcurrent protection, as well as thermal shutdown, pre-bidirectional current protection, and channel latch-off protection.

Overall, the LYT4211L is a versatile, cost-effective AC/DC, offline switcher that offers system designers features and optimization tools to minimize their board space, cost and complexity while optimizing system efficiency. Its rugged design is capable of operating over a wide temperature range up to 100 °C, providing the robust performance and safe operation necessary for many applications. Its wide range of protection features, combined with its low-capacitance synchronous rectification and optimized efficiency critical-mode flyback topologies, make it ideal for a range of applications, such as LCD TVs and monitors, household appliances, AC/DC adapters and other home applications.

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