DESCRIPTION
The LTC®4440 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 LTC4440 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 LTC4440’s pull-up has a peak output current of 2.4A and its pull-down has an output impedance of 1.5Ω.

FEATURES
■ Wide Operating VIN Range: Up to 80V
■ Rugged Architecture Tolerant of 100V VIN Transients
■ Powerful 1.5Ω Driver Pull-Down
■ Powerful 2.4A Peak Current Driver Pull-Up
■ 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
■ Low Profile (1mm) SOT-23 (ThinSOT)™ and Thermally Enhanced 8-Pin MSOP Packages

APPLICATIONS
■ Telecommunications Power Systems
■ Distributed Power Architectures
■ Server Power Supplies
■ High Density Power Modules