UC382T-2

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UC382T-2 Application Field and Working Principle

LTC3882T-2 is a dual step-down wide input voltage range synchronous buck converter that can support up to 30V input voltage and up to 26V/channel output voltage with programmable current limit and remote on/off feature. It is usually categorized as a member of PMIC (Power Management ICs), more specifically in Voltage regulators, Linear.

The working principle of LTC3882T-2 is the same as the other buck converters. The circuit contains the two main components − switching element and an output inductor − that facilitates the conversion of the power. The front end of the LTC3882T-2 consists of two input terminals V3P3 and V3P3SW. These terminals can either connect to the power source or ground depending on the source of the voltage. The voltage from these terminals is stepped down to VIN, which is then applied to the converter\'s input. The converter then switches the input voltage to create an inductor or inductance, which stores energy and releases it as the output voltage.

The LTC3882T-2 integrates two powerful and efficient buck converters that feature constant frequency current mode control, adjustable operating frequency up to 4.375MHz, remote on/off, a user programmed switch output voltage up to 26V, and low voltage start-up. These features make the LTC3882T-2 ideal for use in space-constrained applications, where high current and high input voltage conditions exist. It can also be used in air-constrained systems and work in extended high-temperature ranges.

The LTC3882T-2 is an ideal solution for next-generation power management applications in communications, data processing, automotive, and industrial control systems. It is particularly well suited for supplying 12V rails, such as PCIe graphics cards, with the adjustable current limit and remote on/off features. The integrated pulsed frequency modulation (PFM) mode in the LTC3882T-2 improves light load efficiency and reduces output voltage ripple, making it an efficient power management solution for 5V, 12V, and 18V systems. Additionally, the LTC3882T-2 integrates robust protection features, including a precision startup voltage regulator and an internal clock synchronization.

The LTC3882T-2\'S powerful and efficient buck converters are ideal for next-generation power management applications. Its adjustable output current limit and remote on/off feature allows it to supply 12V rails, such as PCIe graphics cards, with high current and input voltage conditions. Integrating its PFM mode improves light load efficiency and output voltage ripple, making it especially efficient when supplying 5V, 12V, and 18V systems. Further, its precise startup voltage regulator and integrated clock synchronization offer robust protection features. Overall, the LTC3882T-2 is an excellent choice for communications, data processing, automotive, and industrial control system applications due to its high input voltage range, output voltage stability, and robust protection features.

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