DESCRIPTION
The LX1562 is a second-generation family of power factor correction controllers using a discontinuous mode of operation. They are optimized for electronic ballast applications. Many improvements have been made over the original SG3561A controller introduced by Silicon General Semiconductor in 1992.

KEY FEATURES
■ Internal Start-Up Circuit
■ Internal Current Sense Blanking
■ Improved Micropower Start-Up
   Current (300µa Max.)
■ Clamped E.A. Output for Lower
   Turn-on Overshoot
■ Multiplier Clamp Limits Maximum
   Input Current
■ Internal Overvoltage Protection
   Replaces Built-in C.S. Offset
■ Pwm Output Clamp Limits Mosfet
   Gate Drive Voltage
■ Increased UVLO Hysteresis Reduces
   Start-Up Timing (Lx1562 Only)
■ Low Operating Current Consumption
■ Internal 1.5% Reference
■ Totem Pole Output Stage
■ Automatic Current Limiting of Boost
   Stage
■ Discontinuous Mode of Operation
   With No Current Gaps
■ No Slope Compensation Required

APPLICATIONS
■ Electronic Ballast
■ Switching Power Supplies