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MIC4421A and MIC4422A MOSFET drivers are rugged, efficient, and easy to use. The MIC4421A is an inverting driver, while the MIC4422A 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 MIC4421A/4422A 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. MIC4421A/4422A drivers can replace three or more discrete components, reducing PCB area requirements, simplifying product design, and reducing assembly cost. Modern Bipolar/CMOS/DMOS construction guarantees freedom from latch-up. The rail-to-rail swing capability of CMOS/DMOS helps ensure adequate gate voltage to the MOSFET during power up/down sequencing. Since these devices are fabricated on a self-aligned process, they have very low crossover current, run cool, use little power, and are easy to drive.
High peak-output current: 9A peak (typ.)
Wide operating range: 4.5V to 18V (typ.)
Minimum pulse width: 50ns
Latch-up proof: fully isolated process is inherently immune to any latch-up.
Input will withstand negative swing of up to 5V
High capacitive load drive: 47,000pF
Low delay time: 15ns (typ.)
Logic high input for any voltage from 2.4V to VS
Low equivalent input capacitance (typ.): 7pF
Low supply current: 500µA (typ.)
Output voltage swing to within 25mV of ground or VS
|1 × 1 × 1 mm