LTC3805HMSE-5#PBF

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The LTC3805HMSE-5#PBF is a synchronous step-down regulator controller manufactured by Linear Technology Corporation. This product falls into the Power Management Integrated Circuits (PMICs) category, with Voltage Regulators and DC-DC Switching Controllers as its sub-category. This component has been specifically designed for efficient power conversion applications in space-constrained systems, making it ideal for use in a variety of small form-factor products.

The device is built around a quiescent current-mode control architecture, providing reliable operation and high efficiency in a small package. It operates at a switching frequency of 300 kHz to 1.2 MHz and can switched the ON and OFF state of the FETs at up to 4A. Its output voltage can be set externally, with a range of 0.5V to 6V.

The device provides several protection and control features as well, such as an over-temperature protection, soft-start/rise time control, short-circuit protection, and a programmable peak current limit. This makes the LTC3805HMSE-5#PBF ideal for use in a variety of modern system power requirements.

The component is primarily used for its two-phase, synchronous step-down regulator which offers a high efficiency conversion of power for the DC component of the system. It is designed to maintain a tight output voltage regulation with minimal external components. The device is optimized for use in the 20V to 5V range, and can be used with supplies over 40V.

The device includes advanced features which enable it to operate at light load conditions while still staying in regulation. The frequency foldback feature allows the user to reduce the switching frequency in light load conditions, thus reducing power losses due to the switch. Additionally, the Burst Mode operation allows the system to consume as little power as possible without leaving the regulated output level.

The device is also designed for ease-of-use, allowing its features to be programmed without having to add any extra external components. The device’s input allow the user to select a POT or electrical programming options. A DAC option is also provided, allowing precision adjustment of the regulator. Additionally, the device provides several control pins which can be used for setting the package options.

Overall, the LTC3805HMSE-5#PBF is an efficient, compact solution for power conversion applications. Its quiescent current-mode control architecture, advanced power management features and easy to program interface make it an ideal choice for a wide variety of system power requirements.

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