LTC3676ILXE#PBF

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The LTC3676ILXE#PBF is a special purpose voltage regulator developed by Linear Technology Corporation. It is a highly integrated device that combines a low-dropout (LDO) voltage regulator, a buck regulator and an adjustable current limiter. The device also provides fault protection features such as thermal shutdown, an over-voltage protector (OVP) and under-voltage lockout (UVLO). It is particularly well suited to situations where precise control of the output voltage is required.

The LTC3676ILXE#PBF is a powerful, low-power highly efficient voltage regulator intended for embedded applications that require both a high line/load step-down (buck) regulator as well as a linear (LDO) regulator. The device offers a wide-ranging selection of output voltage options, ranging from 0.8V to 5.5V and with a broad range of current capabilities, enabling various supply topologies such as single-cell Li-ion battery operation. Additionally, the device includes a low-quiescent current consumption mode, thus enabling the lightweight design of ultra-low power systems, while still providing a high power supply efficiency.

The key features of the LTC3676ILXE#PBF include: a low-voltage input range (from 0.8V to 5.5V); adjustable current limit with threshold voltages from 0.3V to 5.5V; output voltage can be preset at 0.8V, 1.2V, 1.8V, 2.5V, and 5.5V; wide range of current output (maximum up to 1A); thermal overload protection with foldback current limit; over-voltage and under-voltage protection; high switching frequency up to 1.2MHz; and low-quiescent current consumption (as low as 0.5mA).

The LTC3676ILXE#PBF is an ideal PMIC solution for embedded applications such as microcontrollers, processors, and mixed-signal chips requiring precise voltage regulation, low power operation, and multiple supply sources. With its wide operating input voltage range and high efficiency, the device is well-suited for applications such as handheld electronic devices, battery-powered systems, portable devices (e.g. compact digital music players, portable navigation systems, and personal digital assistants), LED lighting and many more.

In addition to its primary power regulation capabilities, the device also offers a variety of integrated peripherals, including a pulsed-mode current limiter, an adjustable current limit function that activates when the system input voltage is greater than or equal to 0.3V and current limit voltage is greater than 0.32V. The pulsed-mode current limiter reduces the inrush current significantly, allowing for compatibility with higher capacitance power sources. Additionally, the device also features adjustable slew rate and an adjustable frequency that can be set between 200 kHz to 1.2 MHz.

Overall, the LTC3676ILXE#PBF delivers efficient and reliable power conversion in a miniature QFN package, making it an ideal choice for many embedded applications. It is a highly integrated energy-efficient solution that meets the requirements of both the buck regulator and LDO regulator markets. The device offers a robust set of features and integrated peripherals that enable superior power conversion and lower power consumption.

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