DESCRIPTION
The LTC®4440A-5 is a high frequency high side N-channel MOSFET gate driver that is designed to operate in applications with VIN voltages up to 80V. The LTC4440A-5 can also withstand and continue to function during 100V VIN transients. The powerful driver capability reduces switching losses in MOSFETs with high gate capacitances. The LTC4440A-5’s pull-up has a peak output current of 1.1A and its pull-down has an output impedance of 1.85Ω.

FEATURES
■ Wide Operating VIN Range: Up to 80V
■ Rugged Architecture Tolerant of 100V VIN Transients
■ Powerful 1.85Ω Driver Pull-Down (with 6V Supply)
■ Powerful 1.1A Peak Current Driver Pull-Up (with 6V Supply)
■ 7ns Fall Time Driving 1000pF Load
■ 10ns Rise Time Driving 1000pF Load
■ Drives Standard Threshold MOSFETs
■ TTL/CMOS Compatible Inputs with Hysteresis
■ Input Thresholds are Independent of Supply
■ Undervoltage Lockout
■ Thermally Enhanced 8-Lead MSOP Package

APPLICATIONS
■ Automotive Power Systems
■ Telecommunications Power Systems
■ Distributed Power Architectures
■ Server Power Supplies
■ High Density Power Modules
■ General Purpose Low or High Side Driver