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.

特性 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