LT3585EDDB-3#TRMPBF

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The LT3585EDDB-3#TRMPBF is a step-down DC/DC converter which is part of the specialized power management category. This specialized device offers very impressive switch current, efficiency and power density performance in a wide range of applications. The device offers a 3MHz fixed frequency with a wide range of output voltage options for optimization as well as flexible operation with user programmable frequency and current limit.

Overview

The LT3585EDDB-3#TRMPBF is a high voltage, wide-input switched capacitor converter that allows flexibility in the voltage regulator design by delivering high current output up to 3A, input voltages from 4V to 40V, and configurable output voltages from 1.2V to 31V. It is offered in a Pb-free, thermally enhanced 6 lead DFN package and has a guaranteed thermal resistance of 0.7°C/W.

Supply voltage range

The device LT3585EDDB-3#TRMPBF supports an input voltage range of 4V to 40V and includes an internal low on-resistance power MOSFET that can accommodate up to 30V to GND. This wide input range makes the device suitable for a variety of applications including automotive and industrial. The device also offers a maximum output current of 3A, allowing the device to handle loads requiring a greater amount of current.

Output Voltage range

The LT3585EDDB-3#TRMPBF also offers a wide range of output voltage options for optimization. The output voltage is adjustable from 1.2V to 31V, with an accuracy of better than ±2% over a wide range of input and load conditions. Additionally, the output voltage can be adjusted in discrete steps, with an accuracy of better than ±1%.

Working Principles

The LT3585EDDB-3#TRMPBF operates on the principle of a switched capacitor flyback topology. This principle enables the device to draw and store energy in the input capacitor, and then release it to the output capacitor or load, providing a higher efficiency compared to linear regulators. The device can operate in both continuous and discontinuous current modes and also supports an operating frequency of up to 3MHz for achieving high power density designs.

Protection Features

To ensure reliable operation, the device also offers several protection features. These include under voltage lockout (UVLO), over temperature protection (OTP), and cycle-by-cycle current limit. In addition, the device has an adjustable soft-start and adjustable current limit, allowing the device to be optimized and customized for the desired application.

Application fields

Given its wide range of features and high performance, the LT3585EDDB-3#TRMPBF is suitable for a variety of applications including high power density point-of-load (POL) converter, computing and consumer applications, servers, power factor corrections, automotive, and other industrial applications. The device is also suitable for powering processors, FPGAs, ASICs, and other digital systems.

Conclusion

The LT3585EDDB-3#TRMPBF power management represents a great solution for a number of specialized applications due to its impressive switch current, efficiency and power density performance. The device’s wide input voltage range, adjustable output voltage, and other protection features make it ideal for applications that require reliable and efficient power management.

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