Datasheet Summary
Product Specification Highly-Integrated Green-Mode PWM Controller
SG6842J frequency at l ight-load co nditions. To a void acoustic-noise p roblem, t he m inimum PWM frequency set abo ve 20kHz. T his green-mode f unction e nables t he power supp ly to easily meet in ternational power conservation r equirements. To further re duce p ower consumption, SG 6842J is m anufactured by usi ng the BiCMOS process. This allows the lowest start-up current around 8uA, and the operating current is only 4mA. As a result, large start-up resistance can be used. SG6842J in tegrates freq uency j ittering fun ction internally. The frequency jittering fun ction helps reduce EMI em ission of a power supply wi...