4-Channel WLED Controller And High Efficiency Buck Converter | WLED Controller:4-String Max 350 mA/String WLED ControllerUp to 24 V Input Voltage Range2.5% Current Matching AccuracyProgrammable Switching FrequencyPWM and Analog Dimming ModeOpen and Short LED ProtectionProgrammable Over-Voltage ProtectionRecoverable Thermal Shutdown ProtectionOver-Current ProtectionOver-Temperature ProtectionInductor/Diode Short ProtectionBuck Converter:144 mO/58 mO Low Rds(on) Internal Power MOSFETsLow Quiescent CurrentFixed 235 kHz Switching FrequencyFrequency Sync from 250 kHz to 2 MHz External ClockAAM Power-Save ModeInternal Soft StartOCP and HiccupOver-Temperature ProtectionOutput Adjustable from 0.8 V