LTC1147HVCS8-3.3#TRPBF

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The LTC1147HVCS8-3.3#TRPBF is a high voltage, high current, DC-DC switching controller. It is designed for general purpose use and earned its position in the world of power management integrated circuits (PMICs). The LTC1147HVCS8-3.3#TRPBF belongs to the category of voltage regulators, or DC-DC switching controllers.

This integrated circuit has a wide range of features that allow it to be used in various applications. For instance, the controller can provide a regulated output voltage of up to 40 V at a maximum of 3.25 A per phase. Furthermore, the unit is designed with soft-start, over-current protection, and thermal shutdown functions to prevent overloading of the system. It also has an adjustable frequency range of up to 1 MHz and a maximum duty cycle of 95%, making it suitable for high-speed switching operations. Additionally, the controller can operate at adjustable switching frequencies of up to 1.5 MHz, depending on the application.

In terms of its working principle, the LTC1147HVCS8-3.3#TRPBF implements an adjustable buck-boost topology. This means that it provides a regulated output voltage from an input voltage of up to 40 V. In order to achieve this, the controller reads an external voltage divider, generated with the output voltage, and adjusts the PWM switching frequency accordingly. It uses a peak current mode control to regulate the output voltage, with the help of an external error amplifier and a closed-loop feedback algorithm.

This controller is ideal for applications such as DC-DC power supplies, on-board point-of-load converters, and automotive systems. It can also be used in portable devices, battery chargers and in telecommunication systems. Furthermore, the controller is specified over the -40°C to +85°C temperature range. It is available in 8-lead MSOP and 5-lead, 3 mm × 3 mm DFN packages.

In summary, the LTC1147HVCS8-3.3#TRPBF DC-DC switching controller is an integrated circuit designed for general purpose use. With the adjustable buck-boost topology, it is capable of providing a regulated output voltage from an input voltage of up to 40 V. Additionally, the unit has a wide range of features and is suitable for several applications, such as DC-DC power supplies and on-board point-of-load converters. The controller is also specified over the -40°C to +85°C temperature range and is available in 8-lead MSOP and 5-lead, 3 mm × 3 mm DFN packages.

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