LT8705IFE#TRPBF

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LT8705IFE#TRPBF is a low-noise DC-DC step-up synchronous switching controller integrated with a 2.5A switch. It is part of a low noise DC-DC voltage regulator offering an easy power solution for single cell Li-Ion battery or universal input environments. It provides a solution with a high efficiency, ambient temperature operating over a wide range of input and output voltages and current.

Application Field

The LT8705IFE#TRPBF is primarily designed for small-size, portable electronic devices and other industrial applications. It can support a minimum input voltage of 2.5V and a maximum input voltage of 5.5V, making it suitable for single cell Li-Ion battery applications, such as midrange and portable power products. It is also suitable for applications that require a universal input voltage, such as high-frequency optical modules and desktop LCD Monitors.

Working Principle

The LT8705IFE#TRPBF utilizes an inner voltage feedback loop to regulate the output voltage and provides a fractional current limit protection of 4A/ 2.5A. The LT8705IFE#TRPBF employs a current-mode-based pulse-width modulation (PWM) algorithm to accurately regulate the output voltage with fast transient and load changes. The switching frequency of the PWM is automatically adjusted within the range of 300kHz to 2MHz based on the particular operating conditions. This ensures a stable output voltage of up to 5.3V despite large and rapid changes in input voltage and load.The LT8705IFE#TRPBF also features low-noise operation required for LCD applications, as well as wide input voltage and output voltage range. A 5V overshoot protection is also provided for to protect the load and the power converter.

Conclusion

The LT8705IFE#TRPBF is suitable for many applications including mid-range and portable power products, high frequency optical modules, and desktop LCD Monitors. Its fast transient and load changes make it a reliable and efficient DC-DC converter form these applications. Its also features 5V overshoot protection, low-noise operation, and wide input voltage and output voltage range which enables it to be used in a wide range of applications.

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