TB99LEDDriverDescriptionTheTB99isaPWMhigh-efficiencyLEDdrivercontrolIC.ItallowsefficientoperationofHighBrightness(HB)LEDsfromvoltagesourcesrangingfrom8VDCupto500VDC.TheTB99controlsanexternalMOSFETatfixedswitchingfrequencyupto500kHz.Thefrequencycanbeprogrammedusingasingleresistor.TheLEDstringisdrivenatconstantcurrentratherthanconstantvoltage,thusprovidingconstantlightoutputandenhancedreliability.Theoutputcurrentcanbeprogrammedbetweenafewmilliampsanduptomorethan1.0A.Features?? 90%Efficiency??8Vto500Vinputrange??Constant-currentLEDdriver??ApplicationsfromafewmAtomorethan1AOutput??LEDstringfromonetohundredsofdiodes??PWMLow-FrequencyDimmingviaEnablepin??InputVoltageSurgeratingsupto500V
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