LTC3613IWKH#PBF

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Today, power converters and controllers are essential elements of mobile and portable devices. The LTC3613IWKH#PBF is a low-noise synchronous step-down (buck) switching regulator in the DC-DC switch regulator category. It features high efficiency, over 10 Ω of MOSFET on-resistance and a 600 mA peak gate driver.

The LTC3613IWKH#PBF is an efficient, low noise high current buck regulator. It is an integrated solution of a buck controller, a MOSFET driver, a dual MOSFET pass and an internal compensation network. The device is specifically tailored for reducing noise, power dissipation and board space. The high current and wide input voltage range make it very suitable for applications with up to 10A of load current and input voltage up to 6.25V.

Application of the LTC3613IWKH#PBF

The LTC3613IWKH#PBF is designed for a wide range of applications, including notebook computers, cellular phones, digital cameras, portable systems and other applications that require a low noise, high current, efficient step down solution. It is suitable for multi-phase or single-phase buck regulator applications as well as for one or two cells Li-ion/Li-Polymer battery powered applications. The device is also well-suited for high frequency synchronous, flyback, forward and other DC-DC buck and step-down converters.

Working Principle of the LTC3613IWKH#PBF

The LTC3613IWKH#PBF uses a constant frequency architecture with a pulse width modulated (PWM) control scheme. This ensures regulation accuracy is maintained over a wide input voltage range. The device also features cycle-by-cycle current protection and short-circuit protection. It can be configured to operate in current mode, making it less sensitive to transient load changes. Internal MOSFET drivers prevent shoot-through current. It also has an asynchronous rectification feature that helps boost efficiency and reduce switching losses.

The wide 3.2V to 6V range is supported by an open-drain enable pin that can be used to synchronize the device to an external clock (up to 1 MHz). Soft start eliminates inrush current. The device supports active PFC, allowing the system to operate at higher efficiency levels. The integrated programmable current limit feature helps prevent over-current conditions. The device can also be configured to operate in either continuous or discontinuous conduction mode.

The LTC3613IWKH#PBF is an efficient, low noise high current buck regulator solution. It provides excellent performance, reliability and cost efficiency. The device is suitable for a variety of DC-DC buck and step-down applications. It is a great choice if you need an efficient and cost-effective power solution.

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