OB2268 Description
OB2268/9 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications in above 20W power level. PWM switching frequency at normal operation is externally programmable and trimmed to tight range. At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss.
OB2268 Key Features
- Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design
- Audio Noise Free Operation
- External Programmable PWM Switching
- Internal Synchronized Slope pensation
- Low VIN/VDD Startup Current(4uA) and Low
- Leading Edge Blanking on Current Sense Input
- plete Protection Coverage With Auto Self
- On-Bright Proprietary Frequency Shuffling Technology for Improved EMI Performance (OB2269 only)