LT1947EMS#PBF

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LT1947EMS#PBF is a versatile monolithic buck conversion integrated circuit, specialized for low voltage buck conversion applications. It supports a wide input voltage range of 2.8V to 10V, and it can output current up to 3A and voltage range between 0.4V and 5V. It also possesses small package size and an excellent load transient response capability, making it popular in many industries.

The LT1947EMS#PBF is a special purpose voltage regulator, specifically designed for applications that require an active voltage regulation node. This type of voltage regulator is usually used to provide a constant voltage level when input voltage or output current changes, regardless of the load conditions. It is also designed with PMOS current limit protection, making it able to withstand any sudden voltage drop or current surge that may happen during the conversion process. The circuit also has a frequency spread spectrum technique, further reducing EMI radiation and improving the system efficiency.

The working principle of the LT1947EMS#PBF is simple yet efficient. It works by regulating the output voltage in order to maintain the desired level even when the input voltage or output current changes. This is done by sensing the voltage at the output of the buck converter and comparing it to an internal voltage reference. When the output voltage is lower than the reference, the LT1947EMS#PBF increases the voltage at the output terminals. On the other hand, when the output voltage is higher than the reference, the device reduces the voltage at the output terminals. The entire process is done through a series of steps such as comparator voltage reference, signal conditioning, voltage control loop and output driver stage.

The LT1947EMS#PBF is used in a variety of applications, including power supply for portable electronics, battery chargers, display regulators, and embedded systems. It is highly suitable for applications where space, efficiency and EMI are of particular importance. This device is readily available from several distributors so engineers can easily source them and integrate them into their designs.

In a nutshell, the LT1947EMS#PBF is an ideal special purpose voltage regulator for low voltage buck conversion applications. It is highly efficient and its EMI mitigating features make it well-suited for tight space applications. With its wide input voltage range, excellent load transient response capability, PMOS current limit protection, and frequency spread spectrum technique, the LT1947EMS#PBF deserves to be a popular part amongst engineers in many industries.

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