Sconti! VIPER12A Visualizza ingrandito


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LOW POWER OFF LINE SMPS PRIMARY SWITCHER®TYPICAL POWER CAPABILITYn FIXED 60 KHZ SWITCHING FREQUENCYn 9V TO 38V WIDE RANGE VDD VOLTAGEn CURRENT MODE CONTROLn AUXILIARY UNDERVOLTAGE LOCKOUTWITH HYSTERESISn HIGH VOLTAGE START UP CURRENTSOURCEn OVERTEMPERATURE, OVERCURRENT ANDOVERVOLTAGE PROTECTION WITHAUTORESTARTDESCRIPTIONThe VIPer12A combines a dedicated current modePWM controller with a high voltage PowerMOSFET on the same silicon chip. Typicalapplications cover off line power supplies forbattery charger adapters, standby power suppliesfor TV or monitors, auxiliary supplies for motorcontrol, etc. The internal control circuit offers thefollowing benefits:– Large input voltage range on the VDD pinaccommodates changes in auxiliary supplyvoltage. This feature is well adapted to batterycharger adapter configurations.– Automatic burst mode in low load condition.– Overvoltage protection in hiccup mode.