Description
Current Mode PWM ControllerLatch Shutdown OB2278 Product Specification GENERAL .
OB2278 is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback convert.
Features
* Power On Soft Start Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design
* Audio Noise Free Operation
* External Programmable PWM Switching Frequency
* Internal Synchronized Slope Compensation
* Low VIN/VDD Startup Current(3uA) and Low Operating Curren
Applications
* 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. Lower standby power and higher conversion efficiency is thus achieved. VDD low startup current
