MAX5075AAUA+

The MAX5075AAUA+ is a push-pull FET driver with integrated oscillator and clock output in 8 pin µMAX package. This 4.5V to 15V push-pull, current fed topology driver subsystem with an integrated oscillator for use in telecom module power supplies. The device drives two MOSFETs connected to a centre tapped transformer primary providing secondary side, isolated negative or positive voltages. It has programmable and accurate integrated oscillator with synchronizing clock output that synchronizes an external PWM regulator. A single external resistor programs internal oscillator frequency from 50KHz to 1.5MHz. The MAX5075 incorporates a dual MOSFET driver with ±3A peak drive currents and 50% duty cycle. The MOSFET driver generates complementary signals to drive external ground referenced N-channel MOSFETs. The device is used in current fed, high efficiency power supply modules, power supply building and push-pull driver subsystems.

• Supply voltage range from 4.5V to 15V
• Operating temperature range from -40°C to 125°C
• Ratio of fCLK/fNDRV is 1
• 1mA operating current at 250KHz with no capacitive load
• Synchronizing clock frequency generation options
• Oscillator accuracy of 10% at fOSC = 250KHz, 6V ≤ VCC ≤ 15V
• Rise time of 10ns and fall time of 10ns at CLOAD = 2nF
• Available with clock output frequency to MOSFET driver frequency ratio of 1x, 2x and 4x

Applications

Power Management

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party