Datasheet Summary
UNISONIC TECHNOLOGIES CO., LTD
Preliminary
HIGH VOLTAGE GREEN MODE PWM CONTROLLER
- DESCRIPTION
The UTC UC3869 is a highly integrated current mode PWM control IC with high voltage start up, optimized for high performance, low standby power consumption and cost effective offline flyback converter applications.
PWM switching frequency at normal operation is internally fixed and is trimmed to a tight range. At no load condition, the IC operates in power-saving mode for lower standby power, decreasing frequency for Higher conversion efficiency at light load condition. The internal slope pensation improves system stability at high PWM duty cycle output. Leading-edge blanking on...