LT3681EDE#PBF

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The LT3681EDE#PBF is a switching regulator with a comprehensive operating range spanning from 0.6V – 38V that is frequently used when a higher efficiency, smaller form factor and lower noise output are sought in comparison to linear regulators. It is classified under the category of PMIC – Voltage Regulators – DC DC Switching Regulators.

The device principle of operation is known as Switch Mode Power Supply (SMPS) and it is employed by switching regulators in order to transform input voltages into lower duty cycle, higher frequency pulses which are fed into a transformer, inductor or capacitor winding. The result of this pulse is a current that is only present for a short time but the amplitude is much greater than the input current and this is partially responsible for the higher efficiency that this type of power supply can maintain. The LT3681EDE#PBF also has a soft-start feature which makes the initial current draw of the device low and this extends its life cycle.

The LT3681EDE#PBF is usually used as a buck (step-down) DC-DC regulator, though it can also be configured to work as a boost (step-up) though typically with fewer components and a higher efficiency. As a buck converter, it accepts an input voltage ranging from 2.8V to 38V and outputs an adjustable voltage from 0.6V to 35V. The device also has a wide choice of switching frequencies that range from 250KHz to 5.5MHz. This makes the LT3681EDE#PBF highly suitable for many scenarios that require a high-efficiency, small form factor buck converter.

The LT3681EDE#PBF is featured in many applications including switching converters with low noise, efficient fan speed regulation, battery charging, negative to positive voltage converters, and even power supply design for medical devices. Its lower noise output and higher efficiency has made it a sought-after component in the industry and its switching regulation capabilities may be used to control other functions such as motor drives, gate drives, and load switches that require higher voltages.

To sum up, the LT3681EDE#PBF is a high-efficiency, low-noise, and small form factor DC-DC switching regulator designed to transform input voltages into a lower duty cycle, higher frequency pulse. It is classified under the category of PMIC – Voltage Regulators – DC DC Switching Regulators and its applications include switching converters with low noise, efficient fan speed regulation, battery charging, negative to positive voltage converters, and power supply design for medical devices.

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