MICROCHIP MIC4451ZT

The MIC4451 and MIC4452 CMOS MOSFET drivers are robust, 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 MIC4451/52 accept 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. MIC4451/52 drivers can replace three or more discrete components, reducing PCB area requirements, simplifying product design, and reducing assembly cost. Modern Bipolar/CMOS/DMOS construction ensures freedom from latch-up. The rail-to-rail swing capability of CMOS/DMOS ensures adequate gate voltage to the MOSFET during power up/down sequencing. Because 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: 25 ns
• High Peak Output Current: 12A
• Wide Operating Range: 4.5V to 18V
• High Capacitive Load Drive: 62,000 pF
• Low Delay Time: 30 ns (typ.)
• Logic High Input for Any Voltage from 2.4V to VS
• Low Supply Current 450 μA with Logic 1 Input
• Low Output Impedance: 1.0 Ω
• Output Voltage Swing to within 25 mV of GND or VS
• Low Equivalent Input Capacitance: 7 pF (typ.)

• Switch Mode Power Supplies
• Motor Controls
• Pulse Transformer Driver
• Class-D Switching Amplifier
• Line Drivers
• Driving MOSFET or IGBT Parallel Chip Modules
• Local Power ON/OFF Switch
• Pulse Generators