LTC3372EUK#TRPBF

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The LTC3372EUK#TRPBF is a power management and battery charging IC (PMIC) that provides highly efficient, flexible power-transformation and power-management functions for use in any application. It is part of the DC DC Switching Controllers family of PMICs, designed specifically for situations where there is a need to change the input voltage range, provide intermittent power, or allow for distribution of power to multiple rails.

The LTC3372EUK#TRPBF is an ideal IC for use as an input supply buck-boost controller, as well as a 3-phase synchronous buck-boost (SYB+/-) controller for applications such as LED lighting, battery charging, and other mobile, size-constrained, and space-limited applications. The IC offers improved efficiency, short-circuit protection, reverse current prevention, and protection from excess power dissipation. It provides excellent EMI suppression performance and is highly adaptable to specific application needs in terms of input and output voltage selection, switching frequency and current limit.

The device features a three-phase buck-boost (SYB+/-) architecture, featuring up to three synchronously rectified buck channels (for buck operation) and up to three synchronous rectified boost channels (for boost operation). This combination helps provide excellent efficiency throughout the entire input voltage range, while automatically adapting to variations in input voltage. The input stage also features dynamic voltage scaling (DVS) capability, which allows for optimized battery charging performance over varying battery-pack voltages, such as in automotive applications.

To further improve efficiency, the device also features a number of current-saving techniques, such as wide-input-range pulse frequency modulation (PFM) mode for low current consumption, and high-gain synchronous buck/boost controllers with low peak inductor current for improved light load efficiency. Other features include adaptive dead-time control, a smart current limiter for optimal current margin, and selectable peak-current mode, average-current mode, or voltage-mode control for flexibility.

The LTC3372EUK#TRPBF includes a unique external programming input to enable a user to select the desired voltage, current limit, and other settings. It also includes power-good, power-fail, and temperature-sense inputs, as well as an onboard temperature monitor. A low-voltage negative-signal-voltage output is also included to provide feedback on the current-sense results. Finally, the device includes a built-in programmable RDS(on) current-sense amplifier to enable easy current sensing without external components.

In sum, the LTC3372EUK#TRPBF is an efficient, high-performance, and feature-rich PMIC for use in a variety of applications, such as LED lighting, battery charging, and other mobile or space-limited applications. It can provide excellent performance and high efficiency over an extended input voltage range, as well as dynamic voltage scaling for use in battery-pack applications. The device also offers a number of current-saving techniques, as well as a variety of protection and monitoring functions. Finally, the device is highly configurable via an external programming pin, allowing for easy customizing for specific application needs.

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