UC3800 - Unisonic Technologies

UC3800 LOW COST POWER-SAVING MODE PWM CONTROLLER

The UTC UC3800 is a high performance current mode PWM controller ideally suited for low standby power. High voltage startup is implemented in UTC UC3800, which features with short startup time and no standby current. At no load condition, the IC operates in power-saving mode for lower standby power, decreasing frequency for higher conversion efficiency at l.

Features

with short startup time and no standby current. 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 compensation improves system stability at high PWM duty cycle output. Leading-edge blanking on current sense input removes the signal glitch, which offering minimal external component count in the design. Excellent EMI performance is achieved with UTC proprietary frequency hopping technique (ZL201020615247.1) together with soft driver control. Audio noise is eliminate.