LTC3869IGN-2#TRPBF

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LTC3869IGN-2#TRPBF is a high performance synchronous DC/DC step-down switched mode controller with integrated MOSFETs. It is designed to be used in a wide range of power applications requiring extremely low output noise and fast transient response, combined with accurate and reliable output voltage regulation. It is ideal for repurposing excess energy from solar, automotive and other renewable energy sources.

Application

LTC3869IGN-2#TRPBF is suitable for various applications such as point-of-load (POL) DC/DC converters, isolated flyback/forward converters, step-down converters and post-regulator converters with its 2.5A peak power switch current capability at 5V supply voltage. The device is optimized for high efficiency since it features integrated low on-resistance MOSFETs and synchronous rectification, allowing designers to achieve greater than 95% efficiency with minimum number of external components. It is especially useful for low power non-isolated point-of-load converters and switching regulators, such as in medical, communication, and consumer electronics.

Working Principle

LTC3869IGN-2#TRPBF is designed to operate as a constant-current, variable-frequency synchronous buck-converter. Its current-mode architecture allows for fast transient response and enhanced loop stability while maintaining superior light load efficiency through pulse frequency modulation. It offers a wide range of operating frequencies up to 1.5MHz, allowing it to remain within thermal limits in an easily managed trace-width. Internal current limit circuitry allows the device to forcefully limit the current level it is able to supply to within a safe range. The device also features built-in loop compensation, allowing designers to quickly and easily implement a power supply design without the need for additional external components.

Furthermore, the LTC3869IGN-2#TRPBF includes additional features such as hiccup-mode output-over-current protection, non-latching output over-voltage protection, soft start, pre-bias startup capability, and comprehensive enable and sense options which can enable accurate power control.

In conclusion, the LTC3869IGN-2#TRPBF is an ideal solution for low-power switching DC/DC converters and POL converters, offering a wide range of advanced power conversion features while retaining high efficiency, fast transient response, and low output noise.

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