MIC2182-3.3BSM-TR

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MIC2182-3.3BSM-TR is a step-down DC-DC converter with integrated PWM controller and high side MOSFETs. It is designed as an efficient power solution for space-constrained applications, weighing only 2.2mm x 1.8mm and is available in both an industry-standard, leaded 3mm x 3mm DFN package and a Pb-free, RoHS-compliant package. This device is optimized for applications that require a wide input voltage range of 2.5V to 18V and offer a 4MHz switching frequency.

The MIC2182-3.3BSM-TR step-down DC-DC converter provides a higher ratio of input voltage to output voltage ratio compared to standard DC-DC converters. The device includes high-side and low-side MOSFETs with an integrated low resistance sensefet to provide very high efficiency in dynamic load applications. It provides accurate voltage regulation using current-limit and pulse-width modulation (PWM) control methods.

The MIC2182-3.3BSM-TR works in two modes. In the "no load" mode, the regulator will provide continuously accurate output voltage without the need for an externally adjustable voltage divider. In the "light load" mode, the output voltage will be limited, with the minimum load current need for accurate output voltage control. Both of these modes are adjustable by the use of resistors connected to the Enable, Soft-Start, and Sense pins.

The MIC2182-3.3BSM-TR is designed for a wide range of applications, including low voltage mobile and consumer electronics, USB mobile application, consumer electronics, machine control systems, and point-of-load (POL) neworking power supplies. It is specifically suited for applications that require wide input voltage range, high efficiency, small footprint, and low pin count designs. This step-down DC-DC converter meets the requirements for space constrained smartphone, tablets, and battery operated equipments. It helps in providing a flexible and cost effective solution for battery powered applications such as wireless handsets, wireless data cards, wireless headsets, and digital cameras.

The MIC2182-3.3BSM-TR step-down DC-DC converter works on the principle of voltage regulation. The device is designed to provide regulation of the output voltage in response to changes in the input voltage or output load conditions or a combination of both. It starts by amplifying the error signal from the output stage, which is compared to an internally generated reference voltage. Whenever the error signal is greater than the reference voltage, the device modifies the pulse width to reduce the load current to a level that restores the output voltage to the reference voltage. The output voltage at the load is regulated by varying the duty cycle of the switching element.

The MIC2182-3.3BSM-TR is a highly integrated, efficient device capable of providing a wide range of output voltage regulation of 0V to 3.6V. This device has high efficiency over a wide load range, adjustable output voltage accuracy, low dropout voltage, low quiescent current, and low noise. It operates from -40°C to 85°C and its extended temperature range (-60°C to 125°C) support a wide range of operating conditions in various industrial or commercial applications.

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