L298N (Скамко)

L298DUAL FULL-BRIDGE DRIVER.....OPERATING SUPPLY VOLTAGE UP TO 46 VTOTAL DC CURRENT UP TO 4 ALOW SATURATION VOLTAGEOVERTEMPERATURE PROTECTIONLOGICAL ”0” INPUT VOLTAGE UP TO 1.5 V(HIGH NOISE IMMUNITY)DESCRIPTIONThe L298 is an integrated monolithic circuit in a 15lead Multiwatt and PowerSO20 packages. It is ahigh voltage, high current dual full-bridge driver designed to accept standardTTL logic levels and driveinductive loads such as relays, solenoids, DC andstepping motors. Two enableinputs are provided toenableor disable the deviceindependentlyof the input signals. The emitters of the lower transistors ofeach bridge are connected together and the corresponding external terminal can be used for the con-Multiw att15PowerSO20O RDERING NUMBERS : L298N (Multiwatt Vert.)L298HN (Multiwatt Horiz.)L298P (PowerSO20)nectionof an externalsensing resistor.

Anadditionalsupply input is provided so that the logic works at alower voltage.BLOCK DIAGRAMJenuary 20001/13L298ABSOLUTE MAXIMUM RATINGSSymb olParameterValueUnitVSPower Supply50VV SSLogic Supply Voltage7V–0.3 to 7V32.52AAAVI,VenIOVsensInput and Enable VoltagePeak Output Current (each Channel)– Non Repetitive (t = 100µs)–Repetitive (80% on –20% off; ton = 10ms)–DC OperationSensing Voltage–1 to 2.3V25WJunction Operating Temperature–25 to 130°CStorage and Junction Temperature–40 to 150°CP totTotal Power Dissipation (Tcase = 75°C)TopTstg, TjPIN CONNECTIONS (top view)Multiwatt1515CURRENT SENSING B14OUTPUT 413OUTPUT 312INPUT 411ENABLE B10INPUT 39LOGIC SUPPLY VOLTAGE VSS8GND7INPUT 26ENABLE A5INPUT 14SUPPLY VOLTAGE VS3OUTPUT 22OUTPUT 11CURRENT SENSING ATAB CONNECTED TO PIN 8D95IN240AGND120GNDSense A219Sense BN.C.318N.C.17Out 416Out 3Out 14Out 25VS615Input 4Input 1714Enable BEnable A813Input 3Input 2912VSS1011GNDGNDPowerSO20D95IN239THERMAL DATASymb olPo werSO20Mu ltiwatt15UnitRth j-caseThermal Resistance Junction-caseParameterMax.–3°C/WRth j-ambThermal Resistance Junction-ambientMax.13 (*)35°C/W(*) Mounted on aluminum substrate2/13L298PIN FUNCTIONS (refer to the block diagram)MW.15Po werSOName1;152;19Sense A; Sense BBetween this pin and ground is connected the sense resistor tocontrol the current of the load.Fun ction2;34;5Out 1; Out 2Outputs of the Bridge A; the current that flows through the loadconnected between these two pins is monitored at pin 1.46VSSupply Voltage for the Power Output Stages.A non-inductive 100nF capacitor must be connected between thispin and ground.5;77;9Input 1; Input 26;118;14Enable A; Enable BTTL Compatible Inputs of the Bridge A.81,10,11,20GNDGround.912VSSSupply Voltage for the Logic Blocks.

A100nF capacitor must beconnected between this pin and ground.10; 1213;15Input 3; Input 413; 1416;17Out 3; Out 4–3;18N.C.TTL Compatible Enable Input: the L state disables the bridge A(enable A) and/or the bridge B (enable B).TTL Compatible Inputs of the Bridge B.Outputs of the Bridge B. The current that flows through the loadconnected between these two pins is monitored at pin 15.Not ConnectedELECTRICAL CHARACTERISTICS (VS = 42V; VSS = 5V, Tj = 25°C; unless otherwise specified)SymbolParameterVSSupply Voltage (pin 4)VSSLogic Supply Voltage (pin 9)Test Co nditionsOperative ConditionMin .4.5Ven = H; IL = 0Typ .VIH +2.5Unit46V57V13502270mAmA4mA2473612mAmA6mA1.5VISQuiescent Supply Current (pin 4)ISSQuiescent Current from VSS (pin 9) Ven = H; IL = 0V iLInput Low Voltage(pins 5, 7, 10, 12)–0.3ViHInput High Voltage(pins 5, 7, 10, 12)2.3VSSVIiLLow Voltage Input Current(pins 5, 7, 10, 12)Vi = L–10µAIiHHigh Voltage Input Current(pins 5, 7, 10, 12)Vi = H ≤ VSS –0.6V100µAVen = LVi = LVi = HMax.Vi = XVen = LVi = LVi = HVi = X30Ven = LEnable Low Voltage (pins 6, 11)–0.31.5VVen = HEnable High Voltage (pins 6, 11)2.3VSSVIen = LLow Voltage Enable Current(pins 6, 11)Ven = L–10µAIen = HHigh Voltage Enable Current(pins 6, 11)Ven = H ≤ VSS –0.6V30100µA0.951.3521.72.7VV1.21.71.62.3VVVCEsat (H) Source Saturation VoltageIL = 1AIL = 2AVCEsat (L) Sink Saturation VoltageIL = 1AIL = 2A(5)(5)0.85IL = 1AIL = 2A(5)(5)1.803.24.9VV–1 (1)2VVCEsatTotal DropVsensSensing Voltage (pins 1, 15)3/13L298ELECTRICAL CHARACTERISTICS (continued)SymbolParameterTest Co nditionsMin .Typ .Max.UnitT1 (Vi)Source Current Turn-off Delay0.5 V i to 0.9 I L(2); (4)1.5µsT2 (Vi)Source Current Fall Time0.9 IL to 0.1 IL(2); (4)0.2µsT3 (Vi)Source Current Turn-on Delay0.5 V i to 0.1 I L(2); (4)2µsT4 (Vi)Source Current Rise Time0.1 IL to 0.9 IL(2); (4)0.7µsT5 (Vi)Sink Current Turn-off Delay0.5 V i to 0.9 I L(3); (4)0.7µsT6 (Vi)Sink Current Fall Time0.9 IL to 0.1 IL(3); (4)0.25µsT7 (Vi)Sink Current Turn-on Delay0.5 V i to 0.9 I L(3); (4)1.6µsT8 (Vi)Sink Current Rise Time0.1 IL to 0.9 IL(3); (4)0.2µsCommutation FrequencyIL = 2AT1 (Ven)fc (Vi)Source Current Turn-off Delay0.5 V en to 0.9 IL25T2 (Ven)Source Current Fall Time0.9 IL to 0.1 ILT3 (Ven)Source Current Turn-on Delay0.5 V en to 0.1 ILT4 (Ven)Source Current Rise Time0.1 IL to 0.9 ILT5 (Ven)Sink Current Turn-off Delay0.5 V en to 0.9 IL(2); (4)(2); (4)(2); (4)(2); (4)T6 (Ven)Sink Current Fall Time0.9 IL to 0.1 ILT7 (Ven)Sink Current Turn-on Delay0.5 V en to 0.9 ILT8 (Ven)Sink Current Rise Time0.1 IL to 0.9 IL(3); (4)(3); (4)(3); (4)(3); (4)40µs1µs0.3µs0.4µs2.2µs0.35µs0.25µs0.1µs1) 1)Sensing voltage can be –1 V for t ≤ 50 µsec; in steady state V sens min ≥ – 0.5 V.2) See fig.

2.3) See fig. 4.4) The load must be a pure resistor.Figure 1 : Typical Saturation Voltage vs. OutputCurrent.Figure 2 : Switching Times Test Circuits.Note : For INPUT Switching, set EN = HFor ENABLESwitching, set IN = H4/13KHz3L298Figure 3 : Source Current Delay Times vs. Input or Enable Switching.Figure 4 : Switching Times Test Circuits.Note : For INPUT Switching, set EN = HFor ENABLE Switching, set IN = L5/13L298Figure 5 : Sink Current Delay Times vs. Input 0 V Enable Switching.Figure 6 : Bidirectional DC Motor Control.In pu tsVen = HVen = LL = Low6/13Fu nctio nC=H;D=LForwardC =L; D= HReverseC=DFast Motor StopC=X;D=XFree RunningMotor StopH = HighX = Don’t careL298Figure 7 : For higher currents, outputs can be paralleled.

Take care to parallel channel 1 with channel 4and channel 2 with channel 3.APPLICATION INFORMATION (Refer to the block diagram)1.1. POWER OUTPUT STAGEEach input must be connected to the source of thedriving signals by means of a very short path.TheL298integratestwo poweroutputstages(A ; B).The power output stage is a bridge configurationTurn-On and Turn-Off : Before to Turn-ON the Supand its outputs can drive an inductive load in comply Voltageand beforeto Turnit OFF, the Enableinmon or differenzialmode, dependingon the state ofput must be driven to the Low state.the inputs. The current that flows through the load3.

APPLICATIONScomes out from the bridge at the sense output : anFig 6 shows a bidirectional DC motor control Scheexternal resistor (RSA ; RSB.) allows to detect the inmatic Diagram for which only one bridge is needed.tensity of this current.The external bridge of diodes D1 to D4 is made by1.2. INPUT STAGEfour fast recovery elements (trr ≤ 200 nsec) thatEach bridge is driven by means of four gates the inmust be chosen of a VF as low as possible at theput of which are In1 ; In2 ; EnA and In3 ; In4 ; EnB.worst case of the load current.The In inputs set the bridge state when The En inputThe sense outputvoltage can be used to control theis high ; a lowstate of the En inputinhibitsthe bridge.current amplitude by chopping the inputs, or to proAll the inputs are TTL compatible.vide overcurrent protection by switching low the enable input.2.

SUGGESTIONSThe brake function (Fast motor stop) requires thatA non inductive capacitor, usually of 100 nF, mustthe Absolute Maximum Rating of 2 Amps mustbe foreseen between both Vs and Vss, to ground,never be overcome.as near as possible to GND pin. When the large capacitor of the power supply is too far from the IC, aWhen the repetitive peak current needed from thesecond smaller one must be foreseen near theload is higher than 2 Amps, a paralleled configuraL298.tion can be chosen (See Fig.7).The sense resistor, not of a wire wound type, mustAn external bridge of diodes are required when inbe grounded near the negative pole of Vs that mustductive loads are driven and when the inputs of thebe near the GND pin of the I.C.IC are chopped; Shottkydiodeswould bepreferred.7/13L298This solution can drive until 3 Amps In DC operationand until 3.5 Amps of a repetitive peak current.OnFig 8 it is shownthe driving ofa twophasebipolarstepper motor ; the needed signals to drive the inputs of the L298 are generated, in this example,from the IC L297.Fig 9 shows an example of P.C.B.

designed for theapplication of Fig 8.Fig 10 shows a second two phase bipolar steppermotor control circuit where the current is controlledby the I.C. L6506.Figure 8 : Two Phase Bipolar Stepper Motor Circuit.This circuit drives bipolar stepper motors with winding currents up to 2 A. The diodes are fast 2 A types.RS1 = RS2 = 0.5 ΩD1 to D8 = 2 A Fast diodes8/13{VF ≤ 1.2 V @ I = 2 Atrr ≤ 200 nsL298Figure 9 : Suggested Printed Circuit Board Layout for the Circuit of fig. 8 (1:1 scale).Figure 10 : Two Phase Bipolar Stepper Motor Control Circuit by Using the Current Controller L6506.RR and Rsense depend from the load current9/13L298mmDIM.MIN.TYP.inchMAX.MIN.TYP.MAX.A50.197B2.650.104C1.6D0.06310.039E0.490.550.019F0.660.750.026G1.021.271.520.0400.0500.060G117.5317.7818.030.6900.7000.710H119.60.0220.0300.772H220.20.795L21.922.222.50.8620.8740.886L121.722.122.50.8540.8700.886L217.6518.10.695L317.2517.517.750.6790.6890.699L410.310.710.90.4060.4210.429L72.652.90.1040.7130.114M4.254.554.850.1670.1790.191M14.635.085.530.1820.2000.218S1.92.60.075S11.92.60.0750.102Dia13.653.850.1440.15210/13OUTLINE ANDMECHANICAL DATA0.102Multiwatt15 VL298mmDIM.MIN.TYP.inchMAX.MIN.TYP.MAX.A50.197B2.650.104C1.60.063E0.490.550.0190.022F0.660.750.0260.030G1.141.271.40.0450.0500.055G117.5717.7817.910.6920.7000.705H119.60.772H220.20.795L20.570.810L118.030.710L22.540.100L317.2517.517.750.6790.6890.699L410.310.710.90.4060.4210.429L55.28L6OUTLINE ANDMECHANICAL DATA0.2080.0942.38L72.652.90.1040.114S1.92.60.0750.102S11.92.60.0750.102Dia13.653.850.1440.152Multiwatt15 H11/13L298DIM.Aa1a2a3bcD (1)D1Eee3E1 (1)E2E3GHhLNSTMIN.mmTYP.0.100.40.2315.89.413.9MAX.3.60.33.30.10.530.32169.814.5MIN.0.0040.0000.0160.0090.6220.3700.5471.2711.4310.9inchTYP.0.0500.45011.1 0.4292.96.20.2280.10.00015.9 0.6101.11.10.03110° (max.)8° (max.)5.8015.50.8OUTLINE ANDMECHANICAL DATAMAX.0.1420.0120.1300.0040.0210.0130.6300.3860.570100.4370.1140.2440.0040.6260.0430.043JEDEC MO-1660.394PowerSO20(1) ”D and F” do not include mold flash or protrusions.- Mold flash or protrusions shall not exceed 0.15 mm (0.006”).- Critical dimensions: ”E”, ”G” and ”a3”NRNa2bAeDETAIL Aca1DETAIL BEe3HDETAIL AleadDsluga3DETAIL B20110.35Gage Plane-C-SSEATING PLANELGE2E1BOTTOM VIEWTE31h x 4512/1310PSO20MECC(COPLANARITY)D1L298Information furnished is believed to be accurate and reliable.