LT3493EDCB-3#TRMPBF Integrated Circuits (ICs)

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• Application Field
  The LT3493EDCB-3#TRMPBF is a member of Linear Technology\'s family of DC/DC switching regulators. It is Low-Noise, Step-Down DC/DC switching regulator housed in a 4mm x 5mm package, and it has a wide range of applications in low-noise and high-precision battery-powered, portable, and industrial applications.The LT3493EDCB-3#TRMPBF provides a non-synchronous buck-boost buck regulating topology that provides up to 95% efficiency, which makes it ideal for high efficiency, low noise DC/DC conversion.
  
  The LT3493EDCB-3#TRMPBF is specifically designed for powering cutting-edge portable and medical devices, where efficiency and low-noise operation are paramount. It can also be used for on-board battery charging applications, where high output currents are required, and it has an integrated current limit feature to protect against overloads or short circuits. Its low noise output and low quiescent current makes it suitable for batteries, as it can provide long battery life and reduce heat dissipation.
  
  The LT3493EDCB-3#TRMPBF can also be used in industrial applications, such as LED backlighting, motors, and communication devices, it offers wide-ranging input voltage capability, high efficiency and low noise operation, which is critical for industrial applications demanding high reliability.
• Working Principle
  The LT3493EDCB-3#TRMPBF is a non-synchronous buck-boost buck regulating topology, which means it is a linear regulator with a buck-boost functionality. It is designed to rapidly switch on and off to regulate the output voltage. The input voltage range that can be supported is from 4.5V to 60V, and the output voltage is adjustable from 0.8V to 32V. At the heart of the LT3493EDCB-3#TRMPBF is an internal linear regulator with a master oscillator and comparator, which is responsible for regulating the output voltage, and for providing a stable output.
  
  When the input voltage is greater than the output voltage, the LT3493EDCB-3#TRMPBF acts as a buck converter, and it draws high current from the input, and greatly reduces the input voltage. On the other hand, when the input voltage is lower than the output voltage, the LT3493EDCB-3#TRMPBF acts as a boost converter, and it takes a small current from the input, and boosts the input voltage. This process is repeated on a continuous loop until the desired output voltage is achieved. The LT3493EDCB-3#TRMPBF also features an adjustable gate drive to optimize the efficiency of the converter.
  
  The LT3493EDCB-3#TRMPBF features an integrated current limit feature which protects against overloads or short circuits. It also has an adjustable soft-start feature, which allows the user to adjust the ramp rate of the output voltage and reduce sort circuit inrush current, and it can also be used to further optimize the efficiency of the converter.

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