MIC4468ZWM-TR Integrated Circuits (ICs)

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The MIC4468ZWM-TR is a 4A power MOSFET driver integrated circuit (IC) used in a variety of industrial, medical and consumer applications. This IC can be used to drive a wide array of power MOSFETs, including those found in modern microcontrollers, high power LEDs, and other products requiring high power in a small space. The MIC4468ZWM-TR is a very cost-effective solution to powering even the most complex and powerful of applications.

Application Fields of MIC4468ZWM-TR

The MIC4468ZWM-TR is the go-to IC for driving any type of MOSFET for switching and power management applications. It can be used in programs and applications such as relay driver boards, voltage regulators, DC-DC converters, portable electronic classes, and much more. It is also often used in Class D audio amplifiers due to its versatile power capability enabling up to 4A of power at up to 60V. This makes the MIC4468ZWM-TR ideal for industrial, medical, and consumer-level applications.

Working Principle of MIC4468ZWM-TR

The MIC4468ZWM-TR is an integrated MOSFET driver intended to drive an external low-side, single-ended, or half-bridge power MOSFET. It uses a high-side gate driver and a low-side gate driver in its operation, which are sourced by a common logic input and a common output node. Power MOSFETs that include the RDS(on) (drain-source on-resistance) rating above 30mΩ can be easily driven by the MIC4468ZWM-TR. High drive current capability and high slew rate of the MIC4468ZWM-TR allows for low output gate capacitances and fast transition times.

The MIC4468ZWM-TR has an integrated high-side and low-side pre-driver to enhance the performance of the driver. The pre-driver is designed to provide an enhanced slew rate, necessary for driving high capacitive loads. The pre-driver is powered from an external voltage source which can be either 5V or 12V, and is selectable via an external resistor connected to the VPP pin.

The MIC4468ZWM-TR offers two integrated protection features: bidirectional current limitation and overtemperature protection. The bidirectional current limitation feature prevents the output stage of the driver from drawing too much current in the event of a short circuit on the output. The overtemperature protection shuts off the IC if the internal heat exceeds a critical level. This is essential for protecting the IC and its motive device from becoming damaged.

The MIC4468ZWM-TR is designed with an input current level that saves energy by allowing the IC to remain in its lowest power consumption state during the off-time of the MOSFETs. This further reduces its power consumption, which makes it a great choice for battery-powered devices.

Conclusion

The MIC4468ZWM-TR integrated circuit is an affordable, easy-to-use, and highly reliable power MOSFET driver designed for a wide range of power management applications. Its impressive array of features, such as its high drive current capability, fast transition times, and low output gate capacitances makes it the perfect fit for industrial, medical, and consumer-level projects. This IC’s integrated protection features, along with its adjustable gate driver and pre-driver, makes it an excellent choice for any high-power MOSFETs.

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