DESCRIPTION
They are available in 16−pin DIP and SOP packages. The PWM can be used in either current or voltage mode. In voltage mode, feed−forward from the PFC output bus can reduce the secondary output ripple. Compared with older productions, ML4800 and FAN4800, FAN4800AS/CS/01S/02S have lower operation current that saves power consumption in external devices. FAN4800AS/CS/01S/02S have accurate 49.9% maximum duty of PWM that makes the hold−up time longer. Brownout protection and PFC soft−start functions available in this series are not available in ML4800 and FAN4800. To evaluate FAN4800AS/CS/01S/02S for replacing existing FAN4800 and ML4800 boards, five things must be completed before the fine−tuning procedure: SOIC−16 CASE 751BG 16 1 PDIP−16 CASE 648−08 MARKING DIAGRAM 16 XXXXXXXXXXXX XXXXXXXXXXXX AWLYYWWG 1 XXXXX = Specific Device Code A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G = Pb−Free Package ORDERING INFORMATION See detailed ordering and shipping information on page 16 of this data sheet.
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