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

Typ Value

Description

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

Sujets

• Thermal conductivity

Informations

• Publié par: pefav
• Nombre de lectures: 22
• Langue: English

Extrait

8026L FULLYINTEGRATEDSTEPPERMOTORDRIVER PRELIMINARYDATA n OPERATINGSUPPLYVOLTAGEFROM8TO52V n 5.6APEAKCURRENT(2.8ADC) n R DS(ON) 0.3 W TYP.VALUE@T j =25 + C n BUILT-INDECODINGLOGIC n BUILT-INCONSTANTOFF-TIMEPWM CURRENTCONTROL Po ( w 20 er + D 2 I + P 2 2 ) 4PowerSO36 (20 S + O 2+ 2 2 4 ) n FAST/SLOWDECAYMODESELECTION ORDERINGNUMBERS: n HIGHSIDEOVERCURRENTPROTECTION L6208NL6208PDL6208D 5.6ATYP. n CROSSCONDUCTIONPROTECTION n THERMALSHUTDOWN whichcombinesisolatedDMOSpowertransistors n OPERATINGFREQUENCYUPTO100KHzwithCMOSandbipolarcircuitsonthesamechip. n INTRINSICFASTFREEWHEELINGDIODES ThelogicinputsareCMOS/TTLand m Pcompatible. Thedevicealsoincludesallthecircuitryneededto n UNDERVOLTAGELOCKOUT driveasteppermotor,thatistheconstantofftime PWMcontrolthatperformsthechoppingcurrentcon- TYPICALAPPLICATIONS trolandthestatemachinethatgeneratesthestep- n BIPOLARSTEPPERMOTOR pingsequence.Otherfeaturesaretheprotectionof thehighsideswitchesagainstunsafeovercurrent DESCRIPTION conditionsandthethermalshutdown. TheL6208isafullyintegratedsteppermotordriver TheL6208isassembledinPowerDIP24(20+2+2), manufacturedwithmultipowerBCDtechnology, PowerSO36andSO24(20+2+2)packages. BLOCKDIAGRAM DNG DNG DNG DNG NE teseR kcolC CW/CCW HALF/FULL Control OUT1 A SENSE A OUT2 A V SA V SA V SA V SA cigoL & Drivers V PWM A refA CR A V TOOB C P h u a m rg p e V CP PWM V refB B CR B V BS V SB V SB OUT1 B SENSE B OUT2 B V SB March20011/15 Thisispreliminaryinformationonanewproductnowindevelopmentorundergoingevaluation.Detailsaresubjecttochangewithoutnotice.