LT3480EDD#TRPBF

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The LT3480EDD#TRPBF is a high power DC/DC switching regulator specifically designed for solar panel applications. It is a highly efficient alternative to traditional linear regulators, providing excellent low-noise, high-power conversion capabilities. The device integrates two N-channel MOSFETs, two synchronous rectifiers, and a switching controller, providing up to 2A of continuous output current.

The LT3480EDD is capable of operating in either buck (step-down) or boost (step-up) topologies, providing up to 4A of continuous output current and 96% peak efficiency. This device provides wide range of output voltage from 0.6V up to 24V. The switching frequency of the internal controller can be adjusted from 1kHz to 4MHz to optimize the design for the constraints of the application.

The device is designed for 12V to 18V input range. It is ideal for charging applications, such as portable electronic devices, UPS systems or solar chargers. The LT3480EDD#TRPBF also offers a user selectable power limit by connecting a resistor to the PHASE node. This feature allows the user to custom tailor the charge current profile to match their needs.

The LT3480EDD is ideal for harsh environments. It is built with an 8V monitoring MOSFET and a power limiting circuit that prevents overheating. It has excellent transient response, making it ideal for fast switchover under varying load conditions. The device also provides input reverse polarity protection, as well as a soft-start feature to reduce inrush current.

Working Principle

The LT3480EDD#TRPBF operates in a switching mode, allowing it to continuously extract power from the input voltage source. The switching frequency is determined by an internal oscillator and is automatically adjusted to maintain the desired output voltage across the load. This oscillation rate is typically adjusted from 1kHz to 4MHz, depending on the complexity of the application. The internal MOSFETs and synchronous rectifiers are used to convert the input voltage to the desired output.

The built-in power limiting circuit prevents the device from delivering more power than the power source can provide, ensuring that the output voltage remains within the device\'s specified limits when used in battery-powered applications. The soft-start feature reduces the device\'s input and output currents when it is powered on, while the reverse-polarity protection prevents the device from being damaged by reversed input connections.

Conclusion

The LT3480EDD#TRPBF is a high power DC/DC switching regulator designed for solar panel applications. It is capable of operating in buck or boost topologies, providing up to 4A of continuous output current and 96% peak efficiency. The switching frequency of the internal controller can be adjusted from 1kHz to 4MHz, allowing the user to customize the power rating of the device to match their needs. It also features reverse polarity protection and a soft start feature to reduce inrush current. Overall, the LT3480EDD#TRPBF is an ideal solution for charging applications, such as portable electronic devices, UPS systems or solar chargers.

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