LT8619EDD#PBF

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The LT8619EDD#PBF is a highly integrated high efficiency synchronous buck converter with a wide input voltage range from 4.5V to 100V. It is ideal for high power DC-DC Step-Down voltage regulation and conversion in industrial, automotive, communications, and other applications requiring low to intermediate indoor and outdoor power supplies. The LT8619EDD#PBF is an integrated DC/DC synchronous buck regulator that integrates several components necessary to build a high efficiency, low footprint, switching power supply. It requires few peripheral components, including an external high-side and a low-side MOSFET, inductor, current-sense resistor, and a small ceramic output capacitor. With its very high efficiency, the LT8619EDD#PBF is an ideal solution for the wide input voltage range and tight transient response.

The LT8619EDD#PBF has an integrated low-side MOSFET, which is rated for up to 160V, so it can be used for a wide input voltage range. The base-emitter voltage of this MOSFET provides a regulated voltage reference for the low-side MOSFET turn-on gate control. This gate control is enabled by a bandgap reference, allowing the MOSFET to be switched on and off as required. The LT8619EDD#PBF also features a built-in synchronous rectifier, which allows the use of a bulk capacitor with a lower ESR. This reduces cost and increases efficiency while still providing tight transient response.

In addition, the LT8619EDD#PBF includes a current-sense resistor to monitor total output current. This resistor is connected to the on-chip high-side MOSFET to provide a voltage signal proportional to the current through the MOSFET, allowing for precise current regulation. The LT8619EDD#PBF also includes a temperature monitor, which is used to monitor the temperature of the MOSFETs and the current sensed from the built-in resistor. These two signals are used to calculate the safe operating temperature to ensure high-efficiency operation.

The LT8619EDD#PBF has the ability to deliver a high output of up to 10A while still maintaining excellent efficiency. With this high efficiency and a wide input voltage range, the LT8619EDD#PBF is ideal for various applications such as industrial, automotive, communications, and other high power applications. The switching frequency of the converter is adjustable, which allows the user to customize the output voltage ripple and the noise generated by the converter in order to optimize the efficiency and power conversions.

The LT8619EDD#PBF is packaged in the industry standard 10-pin DFN package, making it easy to integrate into a wide variety of applications. With its on-chip protection features, the LT8619EDD#PBF is able to protect itself from over-current and over-temperature conditions to ensure the long-term reliability of the power supply.

In summary, the LT8619EDD#PBF is a highly integrated high efficiency synchronous buck converter with a wide input voltage range from 4.5V to 100V. This DC-DC Switching Regulator is ideal for high power DC/DC voltage regulation and conversion in industrial, automotive, communications, and other applications requiring low to intermediate indoor and outdoor power supplies. With its high efficiency, wide input voltage range, the LT8619EDD#PBF is the perfect choice for a variety of applications.

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