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MIC4451BN

PMIC - MOSFET, Bridge Drivers - External Switch
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MIC4451( MIC4451BN ) and MIC4452 CMOS MOSFET drivers are tough, efficient, and easy to use. The MIC4451 is an inverting driver, while the MIC4452 is a non-inverting driver. Both versions are capable of 12A (peak) output and can drive the largest MOSFETs with an improved safe operating margin. The MIC4451/4452 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. MIC4451/4452 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. MIC4451BN 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 ............................ 12A Peak• Wide Operating Range.............................. 4.5V to 18V• High Capacitive Load Drive...........................62,000pF• Low Delay Time ........................................... 30ns Typ.• Logic High Input for Any Voltage from 2.4V to VS• Low Supply Current.............. 450µA With Logic 1 Input• Low Output Impedance ........................................ 1.0Ω• Output Voltage Swing to Within 25mV of GND or VS• Low Equivalent Input Capacitance (typ).................7pF MIC4451BN 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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