LX1671CLQ

The LX1671 is a highly integrated power supply controller IC featuring three PWM switching regulator stages with an additional onboard linear regulator driver.Two of the constant frequency voltage-mode PWM phases can be easily configured for a single Bi-Phase high current output or two independently regulated outputs. Each phase incorporates a fully programmable soft-start sequence. This versatility yields either three or four independently regulated outputs with full power sequencing capability giving system designers the ultimate flexibility in power supply design.KEY
FEATURES◾ Up to Four Independently Regulated Outputs◾ Outputs As Low As 0.8V Generated From An Internal 1% Reference◾ Multiphase High Current Output Reduces Required Capacitance◾ Integrated High Current MOSFET Drivers◾ 300kHz High Frequency Operation Minimizes External Component Requirements◾ Independent Phase Programmable Soft-Start and Power Sequencing◾ Adjustable Linear Regulator Driver Output◾ No current-sense resistors◾ DDR Termination CompliantAPPLICATIONS/BENEFITS◾ Multi-Output Power Supplies◾ Video Card Power Supplies◾ PC Peripherals◾ Portable PC Processor and I/O Supply