背光板芯片BD9215_BD9215AFV引脚功能和去保护的方法 (背光芯片bd9479fv去保护)

背光板芯片BD_BDAFV引脚功能和去保护的方法脚是欠压保护，脚过压保护，脚过流保护，请切记这是维修的技巧1PGNDGroundforFETdrivers2LN2NMOSFETdriver3HN2NMOSFETdriver4SW2LowerrailvoltageforHN2output5BST2Boot-StrapinputforHN2output6DUTY_OUTBURSTsignaloutputpin7CT_SYNC_OUTCTsynchronoussignalOutputpin8SRTExternalresistorfromSRTtortforadjustingthestart-uptriangleoscillator9RTExternalresistorfromRTtoGNDforadjustingthetriangleoscillatorGNDGROUNDBCTExternalcapacitorfromBCTtoGNDforadjustingtheBURSTtriangleoscillatorBRTExternalresistorfromBRTtoGNDforadjustingtheBURSTtriangleoscillatorDUTYControlPWMmodeandBURSTmodeSTBStand-byswitchCPExternalcapacitorfromCPtoGNDforTimerLatchVREFReferencevoltageinputp*rErroramplifierVSErroramplifierinput*ErroramplifierinputFBErroramplifieroutputSSExternalcapacitorfromSStoGNDforSoftStartControlCOMPOvervoltagedetectpinVCCSupplyvoltageinputUVLOExternalUnderVoltageLockOutREGInternalregulatoroutputBST1Boot-StrapinputforHN1outputSW1LowerrailvoltageforHN1outputHN1NMOSFETdriverLN1NMOSFETdriver

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