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March This is preliminary information on a new product now in development or undergoing evaluation Details are subject to change without notice

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1/15 L6208 March 2001 This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice. n OPERATING SUPPLY VOLTAGE FROM 8 TO 52V n 5.6A PEAK CURRENT (2.8A DC) n RDS(ON) 0.3? TYP. VALUE @ Tj = 25 °C n BUILT-IN DECODING LOGIC n BUILT-IN CONSTANT OFF-TIME PWM CURRENT CONTROL n FAST/SLOW DECAY MODE SELECTION n HIGH SIDE OVER CURRENT PROTECTION 5.6A TYP. n CROSS CONDUCTION PROTECTION n THERMAL SHUTDOWN n OPERATING FREQUENCY UP TO 100KHz n INTRINSIC FAST FREE WHEELING DIODES n UNDER VOLTAGE LOCKOUT TYPICAL APPLICATIONS n BIPOLAR STEPPER MOTOR DESCRIPTION The L6208 is a fully integrated stepper motor driver manufactured with multipower BCD technology, which combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. The logic inputs are CMOS/TTL and µP compatible. The device also includes all the circuitry needed to drive a stepper motor, that is the constant off time PWM control that performs the chopping current con- trol and the state machine that generates the step- ping sequence. Other features are the protection of the high side switches against unsafe over current conditions and the thermal shutdown. The L6208 is assembled in PowerDIP24(20+2+2), PowerSO36 and SO24(20+2+2) packages.

  • full step

  • over current

  • gnd

  • thermal resistance

  • off all


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8026LFULLYINTEGRATEDSTEPPERMOTORDRIVERPRELIMINARYDATAnOPERATINGSUPPLYVOLTAGEFROM8TO52Vn5.6APEAKCURRENT(2.8ADC)nRDS(ON)0.3WTYP.VALUE@Tj=25+CnBUILT-INDECODINGLOGICnBUILT-INCONSTANTOFF-TIMEPWMCURRENTCONTROLPo(w20er+D2I+P22)4PowerSO36(20S+O2+224)nFAST/SLOWDECAYMODESELECTIONORDERINGNUMBERS:nHIGHSIDEOVERCURRENTPROTECTIONL6208NL6208PDL6208D5.6ATYP.nCROSSCONDUCTIONPROTECTIONnTHERMALSHUTDOWNwhichcombinesisolatedDMOSpowertransistorsnOPERATINGFREQUENCYUPTO100KHzwithCMOSandbipolarcircuitsonthesamechip.nINTRINSICFASTFREEWHEELINGDIODESThelogicinputsareCMOS/TTLandmPcompatible.ThedevicealsoincludesallthecircuitryneededtonUNDERVOLTAGELOCKOUTdriveasteppermotor,thatistheconstantofftimePWMcontrolthatperformsthechoppingcurrentcon-TYPICALAPPLICATIONStrolandthestatemachinethatgeneratesthestep-nBIPOLARSTEPPERMOTORpingsequence.OtherfeaturesaretheprotectionofthehighsideswitchesagainstunsafeovercurrentDESCRIPTIONconditionsandthethermalshutdown.TheL6208isafullyintegratedsteppermotordriverTheL6208isassembledinPowerDIP24(20+2+2),manufacturedwithmultipowerBCDtechnology,PowerSO36andSO24(20+2+2)packages.BLOCKDIAGRAMDNGDNGDNGDNGNEteseRkcolCCW/CCWHALF/FULLControlOUT1ASENSEAOUT2AVSAVSAVSAVSAcigoL&DriversVPWMArefACRAVTOOBCPhuamrgpeVCPPWMVrefBBCRBVBSVSBVSBOUT1BSENSEBOUT2BVSBMarch20011/15Thisispreliminaryinformationonanewproductnowindevelopmentorundergoingevaluation.Detailsaresubjecttochangewithoutnotice.