MIC2185YQS-TR

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The MIC2185YQS-TR is a member of the MIC2185 family of DC/DC switching controllers manufactured by Monolithic Power Systems (MPS). It is categorized as a PMIC (Power Management IC) and specifically as a Voltage Regulator and DC/DC switching controller. The device integrated circuit is designed for applications including Voltage Regulators, High Current Linear Regulators, DC/DC Conversion Controllers, and High Efficiency DC/DC Controllers.The MIC2185YQS-TR operates with a2.5V to 8V input voltage range and has a programmable internally fixed switching frequency between 300kHz and 2.5MHz. It is a re-programmable PWM Current Mode Controller that includes MOSFET drivers and current mode PWM controller circuitry, making it suitable for high efficiency and high current applications.The MIC2185YQS-TR is often used in portable equipment such as mobile phones and digital cameras where the battery may be recharged and has a low quiescent current of typically only 5.6µA, making it ideal for such applications.

Working Principle of the MIC2185YQS-TRThe MIC2185YQS-TR operates as a DC/DC Switching Controller and is built with a variety of features designed to produce a stable and efficient voltage conversion. Its working principle is based on two core features, which include the Pulse Width Modulation (PWM) Current Mode Control and the externally-controlled Slew Rate Control.The PWM Current Mode Control is implemented on the MIC2185YQS-TR to regulate the output voltage, as well as to provide additional protection features such as adjustable current limit and thermal protection. This feature has been designed such that the switching frequency can be adjusted with respect to load fluctuations or changes in the input voltage. This allows the user to optimize the efficiency of the system.The Slew Rate Control feature is used to control the rate of change of the output voltage and is used to minimize output capacitors. This feature is implemented by means of an external resistor which can be used to clip the peak current pulses. This allows for excellent reliability, as the user can adjust this parameter as needed, as well as a very low audio noise level.Overall, the MIC2185YQS-TR is a highly efficient and reliable DC/DC Switching Controller ideal for high current and high efficiency applications. Its small size and low quiescent current make it ideal for portable applications.

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