DESCRIPTION

The LX1673 is a highly integrated power supply controller IC featuring one PWM switching regulator stage with an additional onboard linear regulator driver.

With several switching frequencies available (up to 900kHz) the LX1673 can be optimized for both cost and PCB space. Utilizing external compensation, a wide selection of external components can be chosen for use in any application while maintaining stable operation.

KEY FEATURES

◾ Two Independently Regulated Outputs

◾ Outputs As Low As 0.8V Generated From An Internal 1 Reference

◾ Integrated High Current MOSFET Drivers

◾ 300KHz, 600KHz, and 900KHz High Frequency Operation Minimizes External Component Requirements

◾ Soft-Start and Power Sequencing Control

◾ Adjustable Linear Regulator Driver Output

◾ No current-sense resistors

APPLICATIONS/BENEFITS

◾ Video Card Power Supplies

◾ PC Peripherals

◾ Computer Add-On Cards

◾ 3.3V Power Conversion

◾ DDR Memory Termination