LTC3839EUH#PBF

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The LTC3839EUH#PBF is a highly integrated high-performance power-conversion IC containing an expandable non-synchronous buck-boost controller, ideal for distributed-power systems. This device offers operating and shutdown input ranges of 4.5V to 28V and -20V to 6V, respectively,making it suitable for a wide variety of applications in the industrial, automotive and communications markets.

The LTC3839EUH#PBF is specifically designed for battery-powered, low-noise, low-input and wide-input, fast load transient systems. Its DualMillivolt Drops circuit, provides a near-ideal power distribution in systems up to 8A with fast load transient response. Its stand-by current is low enough that it can remain in a battery-powered system even when the system is in sleep mode, thereby providing a low-noise wake-up response.

The LTC3839EUH#PBF, belonging to the PMIC - Voltage Regulators - DC DC Switching Controllers family, is an optimized buck-boost converter, which combines the best of both worlds: non-synchronous buck-boost and synchronous buck-boost operation. It facilitates a wide input voltage operation from 2.5V to 32V and allows for low-noise and low-input system designs.

The LTC3839EUH#PBF is a single integrated, wide input range dual Current Mode Controller for CCM/DCM Buck-Boost Rated for up to 8A Low Stand-by Current, high efficiency and fast transient load regulation. The device includes an output voltage feed-forward function, providing improved load regulation during the transition from buck to boost operation. The output voltage feed-forward is adjustable and allows for the optimum balance between fast transient response and stability.

The internal circuitry of the LTC3839EUH#PBF computes the current limit factor (Q) and the slope compensation factor (Qs), by tracking the maximum inductor current. This allows for a smooth transition between regulated buck and boost operation and also greatly simplifies design of the power stage circuit. Thus, the LTC3839EUH#PBF is capable of delivering up to 8A of output current with high efficiency and fast transient load regulation.

The LTC3839EUH#PBF is the ideal power-conversion component for distributed-power systems including single or multiple supply sources within a wide input voltage range of 2.5V to 32V. Its highly integrated features and high-efficiency designs make it suitable for use in a wide variety of applications. Its fast transient response, low stand-by current and high efficiency make it an excellent choice for battery-powered, low-noise, low-input and wide-input systems. In addition, the device can be used to implement simple cc/cv (constant-current/constant-voltage) power control designs with just a few external resistors.

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