MIC4684YM

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The MIC4684YM is a DC-DC switching regulator belonging to the family of PMIC (Power Management Integrated Circuits). It is characterized by its maximum input/output voltage of 50V, making it suitable for high-voltage applications. It is also available in a variety of package types, including 8-pin PDIP, surface-mount SOIC, and MSOP packages. The MIC4684YM features an adjustable output voltage from +0.8V to +41V, an adjustable switching frequency from 181kHz to 802kHz, and a programmable soft-start time (tSS) from 0.4µs to 128mS. Additionally, the device includes various protection features such as an over-current protection (OCP) with programmable hysteresis and fault response, as well as thermal shutdown with hysteresis.

The MIC4684YM DC-DC switching regulator is designed to provide a reliable power supply solution for a wide range of applications. It can be used in applications such as programmable industrial process controllers, telecommunications systems, and high power LEDs. Additionally, the device can be used in both isolated and non-isolated bias supplies and can be used to generate regulated outputs of both positive and negative polarities. The device\'s high switching frequency and fast On/Off times make it suitable for distributed power systems where multiple outputs are needed.

The MIC4684YM DC-DC switching regulator works on a constant-frequency pulse-width modulation (PWM) control scheme. In PWM, the switching frequency is held constant and the duty-cycle is adjusted in order to control the output voltage. The switch current is monitored in order to detect any over-load or short-circuit conditions and the PWM control loop is regulated using a voltage feedback loop. The output voltage and current levels can be programmed using external resistors and a maximum peak switch current is defined using an external current-limit resistor. The MIC4684YM also includes a Power Good (PG) output flag which allows for monitoring of the output voltage levels.

The MIC4684YM is a versatile and reliable power management solution for a wide range of applications, including industrial process controllers, eliminating the need for multiple power regulators. Its wide input/output voltage range and programmable features make it an efficient and convenient DC-DC switching regulator solution. Furthermore, the device\'s robust protection features ensure reliable and safe operation, even in harsh environments.

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