LTC3634HFE

Series:	*
Part Status:	Obsolete

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LTC3634HFE Application Field and Working Principle

The LTC3634HFE is a special-purpose voltage regulator belonging to Linear Technology Corporation\'s Low Dropout, current sharing regulator family. Due to its 9V to 36V input voltage range, as well as its small size, this regulator is perfect for environments where cost and space are a major concern. It is often used in telecommunication applications, where backup power is essential and cost is a factor.The LTC3634HFE has two integrated converters, both in the same 24-pin Thin-QFN package. With this compact and efficient design, the LTC3634HFE allows up to three 9V to 36V regulated outputs to be generated with up to 96% efficiency. Additionally, its Bias-H altemating-current control pins allow for an easy current sharing solution between multiple outputs, and it also allows multiple outputs from a single input voltage rail. The main advantage of the LTC3634HFE is its ability to robustly support a wide range of input voltages. This is enabled by its adaptive on-time control loop, which allows the LTC3634HFE to work in most of the AC to DC and DC to DC applications with increasingly stringent requirements. Other features include a low dropout voltage, current protection, overvoltage protection, and over-temperature protection.The LTC3634HFE\'s working principle is quite simple. The process starts by monitoring the input voltage. This voltage is then converted into an intrinsic electrical current, which is used to drive the control pin connected to the switch of the converter. The switch is then regulated by this inner current, changing its state depending on the magnitude of the input voltage. Since the transition between on and off states rely on the input voltage, the LTC3634HFE is able to provide a regulated output voltage regardless of input voltage variations.Overall, the LTC3634HFE is a small and efficient voltage regulator that offers reliable performance across wide input voltage ranges. It is designed to provide three output voltages of up to 36V from a 9V to 36V input, with up to 96% efficiency and current protection. Additionally, its Bias-H altemating current control pins enable an efficient current sharing solution between multiple outputs. This makes it an ideal solution for applications such as telecommunications, where backup power is essential and cost is a factor.

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