SG6842J Datasheet - System General

SG6842J Highly-Integrated Green-Mode PWM Controller

The hi ghly i ntegrated S G6842J se ries of P WM controllers provides se veral feat ures t o enhance t he performance of flyback converters. To m inimize standby p ower co nsumption, a proprietary green-mode fun ction pro vides of f-time modulation t o co ntinuously dec rease t he swi tching TYPICA.

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. A.

SG6842J Features

* Green-mode PWM Controller Low Start-Up Current (8uA) Low Operating Current (4mA) Programmable PWM frequency with Jittering Peak-current-mode Operation Cycle-by-Cycle Current Limiting Synchronized Slope Compensation Leading-Edge Blanking Constant Output Power Limit (Full AC Input Range) VDD Over Volt

SG6842J-SystemGeneral.pdf