General Description

MIC4421A and MIC4422A MOSFET drivers are rugged, efficient, and easy to use. The MIC4421A is an inverting driver, while the MIC4422A 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 MIC4421A/4422A accepts any logic input from 2.4V to VSwithout 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

? High peak-output current: 9A Peak (typ.)

? Wide operating range: 4.5V to 18V (typ.)

? Minimum pulse width: 50ns

? Latch-up proof: fully isolated process isinherently immune to any latch-up

? Input will withstand negative swing of up to 5V

? High capacitive load drive: 47,000pF

? Low delay time: 15ns (typ.)

? Logic high input for any voltage from 2.4V to VS

? Low equivalent input capacitance: 7pF (typ.)

? Low supply current: 500μA (typ.)

? Output voltage swing to within 25mV of GND or VS

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