MIC4421 and MIC4422 MOSFET drivers are rugged, efficient, and easy to use. The MIC4421 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 MIC4421/4422 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. MIC4421/4422 drivers can replace three or more discrete components, reducing PCB area requirements, simplifying product design, and reducing assembly costs. Modern Bipolar/CMOS/DMOS construction guarantees freedom from latch-up. The rail-to-rail swing capability of CMOS/DMOS insures adequate gate voltage to the MOSFET during power up/down sequencing. Since these devices are fabricated on a self-aligned process, they have a very low crossover current, run cool, use little power, and are easy to drive.
Features:-
- BiCMOS/DMOS Construction.
- Latch-Up Proof: Fully Isolated Process is Inherently Immune to Any Latch-up.
- Input Will Withstand Negative Swing of Up to 5V.
- Matched Rise and Fall Times …………………………. 25ns.
- High Peak Output Current ………………………….9A Peak.
- Wide Operating Range ………………………… 4.5V to 18V.
- High Capacitive Load Drive ………………………47,000pF.
- Low Delay Time ………………………………………30ns Typ.
- Logic High Input for Any Voltage from 2.4V to VS.
- Low Equivalent Input Capacitance (typ) ……………..7pF.
- Low Supply Current ………….. 450µA With Logic 1 Input.
- Low Output Impedance …………………………………..1.5Ω.
- Output Voltage Swing to Within 25mV of GND or VS.
Applications:-
- Switch Mode Power Supplies.
- Motor Controls.
- Pulse Transformer Driver.
- Class-D Switching Amplifiers.
- Line Drivers.
- Driving MOSFET or IGBT Parallel Chip Modules.
- Local Power ON/OFF Switch.
- Pulse Generators.
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