LT3480IMSE#PBF

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The LT3480IMSE#PBF is a highly integrated DC/DC switching regulator chip designed specifically for space-constrained applications. It is part of Linear Technology’s nanoelectronic product portfolio and specifically falls under the PMIC – Voltage Regulators – DC DC Switching Regulators product umbrella. By utilizing an innovative topology, the LT3480IMSE#PBF utilizes both current mode control and a hysteretic control scheme and combines them into a single-mode control loop resulting in improved efficiency.

The device has a Synchronous Rectification Control to reduce switch-node losses, reducing the total number of components needed, and eliminating the need for an external Schottky diode. The LT3480IMSE#PBF series DC/DC regulator are designed to provide a wide output voltage range and higher efficiency than conventional regulators. The output voltage range of the LT3480IMSE#PBF is adjustable from 0.875V to 5.25V, and it has an ultra-low quiescent current of only 19μA.

The LT3480IMSE#PBF is a step up/down DC-DC switching regulator with an input voltage range of 2.5V to 5.5V. It can support an output current up to 0.8A (at VOUT > 2.5V) and a maximum burst output current of 1.6A. It features a high efficiency of up to 95%. It includes thermal loop compensation and synchronous rectification for improved efficiency and has a low quiescent current of 19 μA.

The LT3480IMSE#PBF series switches on or off the output when the input voltage or output voltage reaches a certain threshold. It ensures that the output voltage is regulated within a range and won’t exceed a predetermined limit. This makes it an ideal choice for low power and space restricted applications. Also, the device offers a soft-start capability which slowly increases the output voltage to its desired level.

The LT3480IMSE#PBF offers advanced features such as under-voltage lockout (UVLO) protection and adaptive frequency control. With the UVLO protection, the LT3480IMSE#PBF can detect the power supply input voltage and automatically shut off if the supply voltage drops below the programmed threshold. The adaptive frequency control of the LT3480IMSE#PBF reduces the switching frequency when the output coil current is low and increases when necessary to maintain regulation accuracy.

By utilizing low quiescent current and high efficiency, the LT3480IMSE#PBF is an ideal DC to DC switching regulator for product applications where limited power and space is a major requirement. It is suitable for powering a variety of different devices such as FPGA, DSP, and microcontroller based systems, as well as consumer electronics, medical, datacom, and industrial applications.

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