Richtek USA Inc.Тайвань, Китай

The R7779C is a high-performance current mode PWM controller with integrated HV ,start-up device inside. During start-up, a current source through integrated HV ,device to charge VDD capacitor for quick start-up while it dissipates no loss ,in normal operation.The R7779C provides users a superior AC/DC power ,application of higher efficiency, few external component count, and low cost ,solution. It features frequency jitter, Under Voltage Lockout (UVLO), Leading ,Edge Blanking (LEB), internal slope compensation in the tiny SOP-7 package, and ,offers complete protection coverage with Over Temperature Protection (OTP), ,Over Load Protection (OLP) and Over Voltage Protection (OVP).,,