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MIC4421ZN Datasheet(PDF) 1 Page - Micrel Semiconductor |
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MIC4421ZN Datasheet(HTML) 1 Page - Micrel Semiconductor |
1 / 12 page MIC4421/4422 Micrel, Inc. August 2005 1 M9999-081005 MIC4421/4422 9A-Peak Low-Side MOSFET Driver Bipolar/CMOS/DMOS Process General Description MIC4421 and MIC4422 MOSFET drivers are rugged, ef- ficient, 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 mar- gin. The MIC4421/4422 accepts any logic input from 2.4V to V S 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 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 MOS- FET 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. 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 V S • 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 V S 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 Functional Diagram IN OUT MIC4421 INVERTING MIC4422 NONINVERTING 0.1mA 0.3mA 2kΩ VS GND Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com |
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