Datasheet Summary
UNISONIC TECHNOLOGIES CO., LTD
LINEAR INTEGRATED CIRCUIT
LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
- DESCRIPTION
The UC3863A is a high performance current mode PWM controller ideally suited for low standby power. The PWM switching frequency is programmable externally at normal operation. Low VDD startup current make the power reliable on startup design and a large value resistor could be used in the startup circuit to minimize the standby power. 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 UTC UC3863A contains protection with automatic...
