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 largest 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.

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