SCM1212B

Features

TheSCM1212BisadriverintegratedwithMOSFETsfortheprimarysideofapush-pullpower..Thechipcanfunctionatthelowinputvoltageof 3V,andwillnotbedamagedunderthehighinputvoltageof9Vinonesecond..Thedevicecontains,twodrivesystemsandtwopowerMOSFET,and eachdrivesystemdecidescircuit’sdirectionofoneprimarywinding.EachdrivesystemincludesonepowerNMOSFET.Twodrivesystemsoperatein turnstoachievepush-pulldrive.TwopowerNMOSFETsarehighlysymmetricalinordertodecreasethedegreeofmagneticbiasingofpush-pull topology.TheSCM1201Bisalsointegratedwiththreekeytechnologiestoimprovereliability.Thefirstoneissoftstartfunction,whichlimitsthecurrent ofMOSFETtoavoidthedamagecausedbythelargecurrentimpactwhenturningonthepower,andquantitativelyguaranteesthecapacitiveloadin CCloadmode.Thesecondoneisoutputover-currentandshortcircuitprotection.Ontheonehand,theSCM1201Bdistinguishesbetweenthe over-currentprotectionandtheshort-circuitprotection,whichcancontroltheshort-circuittemperaturerisewhileguaranteethecapacitiveload.Onthe otherhand,thechipcanadjustprotection’sthresholdbasedontheinputvoltageandtempreaturetoimprovetheconsistency.Thelastoneisover temperatureprotection,whenthechipoperatesbeyondthespecifiedtemperature,itwillentersthedormancystateautomatically.Itwillnotoperateuntil thetemperaturedecreasestothesetpoint.

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Product No. Power(W) Package Topology Control Mode Fsw(khz) OTP OCP SCP UVLP OLP Datasheet Sample Buy
SCM1212B ≤1 SOT-23-5 Push-Pull - 245 Built-in Built-in Built-in Built-in Built-in

* For reference only. The detailed info please refer to the datasheet.

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