DESCRIPTION OB2269 is a highly integrated current mode PWM FEATURES control IC optimized for high performance, low On-Bright Proprietary Frequency Shuffling standby power and cost effective offline flyback Technology for Improved EMI Performance converter applications. Extended Burst Mode Control For Improved PWM switching frequency at normal operation is Efficiency and Minimum Standby Power Design externally programmable and trimmed to tight range. Audio Noise Free Operation At no load or light load condition, the IC operates in External Programmable PWM Switching extended `burst mode' to minimize switching loss. Frequency Lower standby power and higher conversion Internal Synchronized Slope Compensation efficiency is thus achieved. Low VIN/VDD Startup Current(6.5uA) and Low VDD low startup current and low operating current Operating Current (2.3mA) contribute to a reliable power on startup design with Leading Edge Blanking on Current Sense Input OB2269. A large value resistor could thus be used in Compl