MIC3201YME-TR

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As the emergence of components such as MOSFETs, IGBTs, SiC, etc., PMICs have made great progress in the field of LED drivers. The MIC3201YME-TR is a highly integrated LED driver PMIC that is designed for automotive lighting systems. It features wide-voltage input range (from 9.5V to 75V), high efficiency (up to 95%), built-in shutdown protection, and low current operation (down to 15mA).

MIC3201YME-TR consists of a boost regulator, buck/boost converter and two N-channel MOSFETs. The boost regulator maintains the output voltage constant regardless of its load or input voltage, while the buck/boost converter regulates the output current. The two MOSFETs serve as the primary elements that provide the current switch or regulation of the LED string.

The main application field of MIC3201YME-TR is automotive lighting systems. The integrated buck/boost converter and MOSFETs in this PMIC allow it to handle any type of automotive lighting from large arrays such as headlights to small displays. The wide-input voltage range enables MIC3201YME-TR to be used in various automotive applications such as high-/low-beam headlights and daytime running lamps. Furthermore, the PMIC can support different types of lighting systems and offers high efficiency up to 95% with low standby current.

The working principle of MIC3201YME-TR is simple. The boost regulator uses a simple buck topology to regulate the output voltage, and the buck/boost regulator adjusts the output current. The two MOSFETs control the current and SENSE pin to sense the voltage across the MOSFETs. The purpose of this is to detect any malfunctions or overcurrents that may occur in the system. The PMIC also contains a power limiting circuit that will shut off the LED string if the current limit is exceeded.

In conclusion, the MIC3201YME-TR is an ideal LED driver PMIC for automotive lighting systems, offering wide-voltage input range, high efficiency, low current operation and built-in shutdown protection. Furthermore, its simple, highly integrated structure and programmable current regulation make it a great choice for various applications.

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