Analog Devices Inc.

Category: Drivers and Interfaces

The MAX5077 is a +4.5V to +15V push-pull, current-fedtopology driver subsystem with an integrated oscillatorused in telecom module power supplies. The devicedrives two MOSFETs connected to a center-tappedtransformer primary providing secondary-side, isolated,negative or positive voltages. The MAX5077 features aprogrammable accurate integrated oscillator with asynchronizing clock output to synchronize an externalPWM regulator. A single external resistor programs theinternal oscillator frequency from 50kHz to 1.5MHz.The MAX5077 incorporates dual MOSFET drivers with±3A peak drive currents and 50% duty cycle. TheMOSFET drivers generate complementary signals todrive external ground-referenced n-channel MOSFETs.The MAX5077 clock output frequency is programmableby logic inputs to set the clock output to 1x, 2x, or 4xthe MOSFET's driver frequency.The MAX5077 is available in a 14-pin exposed padTSSOP package and is specified over the -40°C to+125°C operating temperature range.ApplicationsCurrent-Fed Power SuppliesPower-Supply Building SubsystemsPush-Pull Driver Subsystems

$3.27 - $6.09