LM3668SD-2833/NOPB

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The LM3668SD-2833/NOPB is a component which belongs to the family of PMIC (Power Management IC) voltage regulators and DC-DC switching regulators. It is used to step down the voltage of a DC power supply, hence providing a regulated output voltage. It is a 1A regulator which integrates a high-side N-channel MOSFET and adjustable current limit, comprising an incredibly low shutdown current of 0.25uA, making it an ideal choice for portable applications.

This component is widely used in a variety of applications, such as smart phones, tablets, computers, consumer electronics, automotive, and other mobile applications. It can provide regulated output current with high efficiency while minimising external component count and size. The wide input voltage range of 4.75V to 28V and an adjustable output voltage from 0.8V to 27.5V makes it suitable for different applications.

In addition to its wide range of applications, this component also has excellent performance. It has a switching frequency of 300kHz and a maximum operating frequency of 1.4MHz which results in excellent efficiency even at light loads. The built-in thermal shutdown protection ensures that the device does not overheat due to prolonged usage. Furthermore, it is designed to meet strict noise requirements, making it suitable for various noise sensitive applications.

The LM3668SD-2833/NOPB works on the principle of switch mode power conversion. This process involves switching the current between phases, thus allowing power conversion to take place. The component uses a combination of MOSFETs and inductors to step down the input voltage. The MOSFETs act as switches and control the current flow in and out of the inductors. The inductors store energy in an electromagnetic field when there is an input current, and release this energy when the current is switched off.

The component also supports various current-limit protection functions, such as constant-current, peak current and average current limiting, thereby making it easy to limit inrush current. The built-in soft-start feature reduces start up stress on the input power supply. The adjustable frequency makes it easy to adjust the frequency of operation and optimize the noise performance.

In summary, the LM3668SD-2833/NOPB is a versatile and high performing component which is widely used in a variety of applications requiring high current power conversion. It is a compact and efficient component with a wide input voltage range and adjustable output voltage. Its features such as current limit protection, temperature protection, and adjustable frequency make it an ideal choice for high current power applications. Moreover, its low shutdown current and excellent efficiency make it a suitable choice for portable power applications.

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