Product Summary

The MIC4421CT is a MOSFET Driver. The MIC4421CT is an inverting driver, while the MIC4422 is a non-inverting driver. Both versions are capable of 9A (peak) output and can drive the largest MOSFETs with an improved safe operating margin. The MIC4421CT accepts any logic input from 2.4V to VS without external speed-up capacitors or resistor networks. Proprietary circuits allow the input to swing negative by as much as 5V without damaging the part. Additional circuits protect against damage from electrostatic discharge. The applications are: (1)Switch Mode Power Supplies; (2)Motor Controls; (3)Pulse Transformer Driver; (4)Class-D Switching Amplifiers; (5)Line Drivers; (6)Driving MOSFET or IGBT Parallel Chip Modules; (7)Local Power ON/OFF Switch; (8)Pulse Generators.

Parametrics

MIC4421CT absolute maximum ratings: (1)Supply Voltage : 20V; (2)Input Voltage : VS + 0.3V to GND - 5V; (3)Input Current (VIN > VS): 50 mA; (4)Storage Temperature : -65℃ to +150℃; (5)Lead Temperature (10 sec): 300℃.

Features

MIC4421CT features: (1)Input Will Withstand Negative Swing of Up to 5V; (2)Matched Rise and Fall Times : 25ns; (3)High Peak Output Current : 9A Peak; (4)Wide Operating Range : 4.5V to 18V; (5)High Capacitive Load Drive : 47,000pF; (6)Low Delay Time : 30ns Typ.; (7)Logic High Input for Any Voltage from 2.4V to VS; (8)Low Equivalent Input Capacitance (typ): 7pF; (9)Low Supply Current : 450uA With Logic 1 Input.

Diagrams

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