LT3480MPMSE#TRPBF

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The LT3480MPMSE#TRPBF DC-DC switching regulator is a compact and efficient power control device designed specifically for industrial and consumer applications that require high power output and tiny size. The integrated power MOSFET, inductor and capacitor allow for a smaller solution footprint than discrete designs, enabling designers to save valuable space in their electronics product. Its high switching frequency and wide input voltage range make it suitable for wide range of applications. This article will discuss the application field and working principle of the LT3480MPMSE#TRPBF DC-DC switching regulator.

Application Field of the LT3480MPMSE#TRPBF DC-DC Switching Regulator

The LT3480MPMSE#TRPBF DC-DC switching regulator\'s high switching frequency makes it applicable for both step-up and step-down applications, making it useful for powering a range of components including power management ICs, sensor ICs, FPGAs, LEDs, and other integrated circuits. The device is particularly well suited for distributed power systems with multiple output voltages where a VIN up to 40V and a multi-mode high efficiency rating is needed. It is specifically designed for automotive, industrial, and consumer applications which have demanding requirements for high power output density and long-term reliability.

The LT3480MPMSE#TRPBF DC-DC switching regulator\'s wide input voltage range, from 4.5V to 40V makes it suitable for automotive and industrial applications, enabling the design of high-power, low-voltage, non-isolated DC-DC converters for battery-powered applications. Additionally, the device\'s input current rating of 3A enables a wide range of applications for non-isolated DC-DC converters.

Working Principle of the LT3480MPMSE#TRPBF DC-DC Switching Regulator

The LT3480MPMSE#TRPBF DC-DC switching regulator operates on a current mode buck-boost principle, where the output voltage is determined by the duty cycle of the Pulse Width Modulated (PWM) switching device. The device uses an internal PWM controller to maintain a constant output voltage despite large changes in input voltage or output current.

The LT3480MPMSE#TRPBF DC-DC switching regulator\'s integrated power MOSFET and inductor provide high efficiency due to low conduction losses, while its low quiescent current and high power-off current provide excellent standby and shutdown performance in ultra-low power applications.

The LT3480MPMSE#TRPBF DC-DC switching regulator also features a unique, integrated auto-skew regulator loop that compensates for minimum on-time variation due to skewing in the PWM signal. This feature provides increased output voltage accuracy and improved performance for higher power applications.

In addition, the LT3480MPMSE#TRPBF DC-DC switching regulator\'s wide operating temperature range of -40° C to +125° C makes it suitable for harsh industrial environments, while its integrated soft-start, adjustable current-limit and under-voltage lockout features ensure reliable operation and system protection.

Conclusion

The LT3480MPMSE#TRPBF DC-DC switching regulator is an efficient, small form-factor power control device designed for industrial and consumer applications. Its high switching frequency, wide input voltage range and low conduction losses make it suitable for a wide range of applications. Its auto-skew regulator loop and adjustable current-limit, soft-start and under voltage lockout features ensure reliable operation and system protection for harsh industrial environments.

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