General Description

MIC4451 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.

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 Current450µA 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

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