LT1248 Datasheet PDF - Linear Technology

DESCRIPTION
The LT®1248 provides active power factor correction for universal off-line power systems. By using fixed high frequency PWM current averaging, without the need for slope compensation, the LT1248 achieves far lower line current distortion with a smaller magnetic element than systems that use either peak-current detection or zero current switching approaches in both continuous and discontinuous modes of operation.

FEATURES
■ High Power Factor Over Wide Load Range with Line Current Averaging
■ International Operation Without Switches
■ Instantaneous Overvoltage Protection
■ Minimal Line Current Dead Zone
■ Typical 250µA Start-Up Supply Current
■ Rejects Line Switching Noise
■ Synchronization Capability
■ Low Quiescent Current: 9mA
■ Fast 1.5A Peak Current Gate Driver

APPLICATIONS
■ Universal Power Factor Corrected Power Supplies
■ Preregulators Up To 1500W