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MIC4422ABM Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC4422ABM Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 13 page MIC4421A/4422A 9A Peak Low-Side MOSFET Driver Bipolar/CMOS/DMOS Process Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( 408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com June 2007 M9999-062707 General Description 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 insures 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. Data sheets and support documentation can be found on Micrel’s web site at: www.micrel.com. Features • 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: 7pF (typ.) • Low supply current: 500µA (typ.) • 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 ___________________________________________________________________________________________________________ Typical Application On Off VS OUT OUT MIC4422A 1µF Si9410DY* N-Channel MOSFET Load Voltage 6 17 0.1µF VS GND IN 8 2 4,5 VS +15V 0.1µF * Siliconix 30m, 7A max. † Load voltage limited by MOSFET drain-to-source rating Low-Side Power Switch |
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