MICROCHIP MIC4421YN

MIC4421 and MIC4422 MOSFET drivers are rugged, efficient, 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 margin. The MIC4421/4422 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. 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 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.

• 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 Vs
• 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 Vs

• 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