LTC3877IUK#PBF

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The LTC3877IUK#PBF series of voltage regulators are a special category of PMIC voltage regulators, designed for the most demanding applications. It is designed for the bulk voltage regulation and current recirculating applications of high-powered, high-efficiency systems. The LTC3877IUK#PBF is capable of precise current and temperature sensing in addition to the usual features such as ON/OFF control and voltage monitoring.

The LTC3877IUK#PBF regulates output voltage under heavy dynamic and static loading. It has a wide input voltage range of 4.5V to 18V and an adjustable voltage reference of 0.8V to 5.39V. The input current can be set up to 4A and the output voltage is adjustable from 0.8V to VIN. The LTC3877IUK#PBF includes a current-limiting circuit to protect against overcurrent conditions, as well as thermal shutdown and overvoltage protection.

The working principle of the LTC3877IUK#PBF is based on the series LDO topology. The voltage reference is compared to the VOUT pin through an internal amplifier and the error voltage is then amplified using the PWM core section. The error voltage is compared to the internal current source to control the gate driver of the FET, which, in turn, feeds the inductor and sets the output voltage.

The LTC3877IUK#PBF is designed for applications such as USB power plants and PC power supplies. It is an ideal solution for applications requiring high performance and accuracy. It offers low output noise and fast transient response, making it well-suited for power sources with fast load changes. The device is also highly integrated, including an on-chip Fault Flag and a Serial Interface to monitor the device, eliminating the need for external ADCs.

The LTC3877IUK#PBF offers low power dissipation, making it an efficient device for low current designs. It can be used as a standalone power supply without any external components as well as for multiple input/output designs. It is also designed for a wide temperature range and is suitable for automotive and industrial applications.

The LTC3877IUK#PBF is a versatile device, suitable for a variety of power management system needs. It is a popular choice among designers and engineers, providing a reliable and robust solution for demanding applications.

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