LTC3861EUH-1#PBF

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Linear Technology’s LTC3861EUH-1-PBF is a switching controller designed to provide power management in a wide variety of applications. The device features a high-efficiency, 48V input, current-mode control and incorporates a low voltage dropout (LDO) regulator for the controller bias supply. The LTC3861EUH-1-PBF can be used to control buck, boost, buck-boost and other DC-DC converter topologies. It is available in a 8-pin plastic overmold DFN package.

The LTC3861EUH-1-PBF is typically fitted as part of a power supply circuit; it uses current mode control to provide users with a fast, reliable and efficient solution for powering digital electronics. It is fully functional for wide input voltage rate, high output current demands and can handle full load switching up to 6MHz. With a typical efficiency rating of 94%, the device provides regulators with the low input ripple current and low output ripple, making it an ideal choice for powering digital electronics.

In addition, the device offers a number of features that make it suitable for use in a wide range of applications. The main features include a minimum operating temperature of -40°C, a maximum operating temperature of 85°C, under-voltage protection, short circuit and overload protection, as well as thermal shutdown protection. The LTC3861EUH-1-PBF is also designed to limit the EMI resulting in maximum radiated and conducted EMI emissions.

The Linear Technology LTC3861EUH-1-PBF is a useful and versatile switching controller due to its high efficiency, fast response, and capability to handle various DC-DC topologies. The device offers a wide range of protection features and is available in a standard 8-pin plastic overmold DFN package. With its fast response time, low voltage dropout and wide operating temperature range, this device is suitable for many different applications including point of load applications, distributed power, on-card and off-card systems.

The LTC3861EUH-1-PBF can be used to control a variety of DC-DC topologies, such as buck, boost, and buck-boost. When used in the buck configuration, the switching controller limits the current to protect the load and the converter. The device regulates the output voltage by changing the duty cycle thus switching the on-time and off-time accordingly. This allows current-mode control, where the peak current is set as a reference, to effectively manage the number of switching cycles and the power delivered to the load.

When used in the boost configuration, the regulator increases the voltage of the supply by means of a feedback loop. The switching controller will keep the output voltage stabilized by continuously monitoring the output voltage, and then adjusting the switching frequency accordingly. Similar to the buck configuration, the LTC3861EUH-1-PBF will adjust its switching frequency depending on the output voltage and desired output current.

The same holds true when using the buck-boost configuration. In this case, the switching controller will adjust the output voltage depending on the load current and the output voltage. The buck-boost function also provides excellent transient response, which ensures a smooth conversion process. Finally, the LTC3861EUH-1-PBF also provides protection features that guard against short circuit, over voltage and over current.

The LTC3861EUH-1-PBF is a versatile switching controller that can be used for a wide variety of applications. With its current mode control, fast response time, low voltage dropout and wide operating temperature range it is suitable for powering digital electronics in multiple DC-DC topologies. As part of the Linear Technology family, customers can rest assured that their products will function correctly and accurately in any given environment.

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