MIC38HC42-1YM-TR

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MIC38HC42-1YM-TR is one of the popular power management ICs(PMICs) ac/dc converters and offline switchers. It helps to increase the power system efficiency and reduce the size and cost of the power system. It provides an efficient way to limit the input power of converters and output load of switch circuit. The working principle of MIC38HC42-1YM-TR is based on a combination of voltage regulation, current limiting and protection circuitry.

The MIC38HC42-1YM-TR is designed to provide high performance, cost-effective output voltage regulation, current limiting and over-temperature protection for a variety of ac/dc and offline converter applications. The maximum switching frequency of the MIC38HC42-1YM-TR is 1MHz, and the switching frequency can be externally set with a 100kHz to 1MHz range. The claimed peak efficiency of the IC is up to 99%.

MIC38HC42-1YM-TR consists of an on-chip voltage regulator and input regulation stage. The on-chip buck converter includes a power MOSFET switch, driver, error amplifier, oscillator and programmable compensation network. The input regulation stage is used to limit the current drawn from the input source. The switching frequency is programmed using an external resistor and capacitor. The switching frequency range is between 100kHz-1MHz.

The MIC38HC42-1YM-TR features two soft-start outputs, one for the power supply and one for the load output. The soft-start outputs reduce the output load\'s inrush current when the converter is powered on, reducing the power loss and improving the system\'s performance. In addition, the over-temperature protection and current limit protection logic lock the shutdown pin if the output voltage is higher than the over-temperature threshold or the output current is higher than the threshold current.

The MIC38HC42-1YM-TR is suitable for a wide range of ac/dc and offline converters applications. It includes low power active and reactive power factor correction (PFC) converters, high power active PFC converters and offline converters. It is also used in power supplies for consumer electronic devices, car electronic and communications equipment.

In conclusion, MIC38HC42-1YM-TR is an advanced power management integrated circuit (PMIC) which provides efficiency and cost-effective performance in a variety of ac/dc and offline converter applications including low and high power active PFC converters and offline converters. It features an on-chip voltage regulator, an input regulation stage and a 100kHz-1MHz frequency range. The claim of the peak efficiency of the IC is up to 99%.

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