MIC4681BM

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The MIC4681BM is an advanced, monolithic switching regulator family specifically designed for notebook, palmtop, and other high-current applications. This highly integrated device provides four independent output channels for maximum flexibility and performance in a variety of applications. With a wide input voltage range of 4.5V to 36V, it can provide up to 5A of continuous output current, and up to 10A of peak load current.

The MIC4681BM is designed to switch the dedicated output voltage, the VID voltage and the main power voltage to the IN or OUT node to regulate the output current or the output voltage based on the load requirements of the system. The device utilizes a variety of features, from current out mode control to multi-phase operation, to ensure dynamic and static DC/DC performance. The MIC4681BM also comes with on-chip safety protection features such as Voltage OV and UV feedback loops, as well as current limit and short circuit protections.

The MIC4681BM is a reliable, high-efficiency DC/DC converter that is ideal for a variety of power management applications. Its dual output architecture enables two independent outputs to be regulated with superior transient response and reliability. The device offers a wide input voltage range, comprehensive safety features, and low switching noise operation. It is also fully EMI tested to ensure minimal interference with other systems, making it a great solution for a variety of computing and industrial applications.

The working principle of the MIC4681BM is based on a pulse width modulation (PWM) technique. In this technique, an internal oscillator is used to generate an analog signal, which is integrated and compared to an external voltage reference. The output of the comparator is used to drive two outputs (IN/OUT), which control the current flow in the switch. As the pulses that make up the PWM signal vary in width, the corresponding switching frequency also varies. The higher the switching frequency, the faster the output voltage settles when it is changing. In addition, the MIC4681BM also features an on-chip voltage feedback which ensures that the output voltage is held at a constant level.

The MIC4681BM is an advanced, highly integrated, high-efficiency switching regulator which is ideal for applications such as notebook, palmtop and other high-current systems. It features a variety of features such as dual output, wide input voltage range, comprehensive protection circuitry and low switching noise performance. Its PWM control technique enables fast and accurate voltage control, enabling system designers to build highly efficient and reliable power management solutions. This makes it the ideal solution for a variety of computing and industrial applications.

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