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Circuit diagram of 12v 4W LED drive

Abstract: cuk Converter advantages
Contextual Info: HV9930 HV9930 Initial Release Hysteretic Boost-Buck Čuk LED Driver ICs Features ! ! ! ! ! ! ! ! General Description Constant Output Current Steps Output Voltage Up or Down Low EMI Variable Frequency Operation Internal 8 to 200V Linear Regulator Input and output current sensing