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MIC4420 Datasheet(PDF) 1 Page - MIC GROUP RECTIFIERS |
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MIC4420 Datasheet(HTML) 1 Page - MIC GROUP RECTIFIERS |
1 / 12 page July 2005 1 M9999-072205 MIC4420/4429 Micrel, Inc. MIC4420/4429 6A-Peak Low-Side MOSFET Driver Bipolar/CMOS/DMOS Process General Description MIC4420, MIC4429 and MIC429 MOSFET drivers are tough, efficient, and easy to use. The MIC4429 and MIC429 are inverting drivers, while the MIC4420 is a non-inverting driver. They are capable of 6A (peak) output and can drive the larg- est MOSFETs with an improved safe operating margin. The MIC4420/4429/429 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. MIC4420/4429/429 drivers can replace three or more discrete components, reducing PCB area requirements, simplifying product design, and reducing assembly cost. Modern BiCMOS/DMOS construction guarantees freedom from latch-up. The rail-to-rail swing capability insures ad- equate gate voltage to the MOSFET during power up/down sequencing. Note: See MIC4120/4129 for high power and narrow pulse applications. Features • CMOS Construction • Latch-Up Protected: Will Withstand >500mA Reverse Output Current • Logic Input Withstands Negative Swing of Up to 5V • Matched Rise and Fall Times ................................ 25ns • High Peak Output Current ............................... 6A Peak • Wide Operating Range ............................... 4.5V to 18V • High Capacitive Load Drive ............................10,000pF • Low Delay Time .............................................. 55ns Typ • Logic High Input for Any Voltage From 2.4V to VS • Low Equivalent Input Capacitance (typ) ..................6pF • Low Supply Current ...............450µA With Logic 1 Input • Low Output Impedance ......................................... 2.5Ω • Output Voltage Swing Within 25mV of Ground or VS Applications • Switch Mode Power Supplies • Motor Controls • Pulse Transformer Driver • Class-D Switching Amplifiers Functional Diagram IN OUT MIC4429 INVERTING MIC4420 NONINVERTING 0.1mA 0.4mA 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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