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Dual Full - Bridge Driver

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The L298 is an integrated monolithic circuit in a 15lead Multiwatt and PowerSO20 packages. It is a high voltage, high current dual full-bridge driver designed to accept standardTTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors. Two enableinputs are provided to enableor disable the deviceindependentlyof the input signals. The emitters of the lower transistors of each bridge are connected together and the corresponding external terminal can be used for the conBLOCK DIAGRAM. | L298 DUAL FULL-BRIDGE DRIVER . OPERATINGSUPPLYVOLTAGEUPTO46 V . TOTAL DC CURRENT UP TO 4 A . LOWSATURATION VOLTAGE . OVERTEMPERATURE PROTECTION LOGICAL 0 INPUT VOLTAGE UP TO 1.5 V HIGH NOISE IMMUNITY DESCRIPTION The L298 is an integrated monolithic circuit in a 15-lead Multiwatt and PowerSO20 packages. It is a high voltage high current dual full-bridge driver designed to acceptstandardTTL logic levels anddrive inductive loads such as relays solenoids DC and stepping motors. Two enableinputsare provided to enableordisablethedeviceindependentlyofthein-put signals. The emitters of the lower transistors of each bridge are connected togetherand the corresponding external terminal can be used forthe con- Multiwatt15 PowerSO20 ORDERING NUMBERS L298N Multiwatt Vert. L298HN Multiwatt Horiz. L298P PowerSO20 nectionofanexternalsensing resistor.Anadditional supply input is provided so that the logic works at a lower voltage. BLOCK DIAGRAM Jenuary2000 1 13 L298 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit Vs Power Supply 50 V Vss Logic Supply Voltage 7 V VI Ven Input and Enable Voltage -0.3 to 7 V IO Peak Output Current each Channel - Non Repetitive t 100us -Repetitive 80 on -20 off ton 10ms -DC Operation 3 2.5 2 A A A Vsens Sensing Voltage -1 to 2.3 V Ptot Total Power Dissipation Tcase 75 C 25 W Top Junction Operating Temperature -25 to 130 C Tstg Tj Storage and Junction Temperature -40 to 150 C PIN CONNECTIONS top view CURRENT SENSING B OUTPUT 4 OUTPUT 3 INPUT 4 ENABLE B INPUT 3 LOGIC SUPPLY VOLTAGE Vss GND INPUT 2 ENABLE A INPUT 1 SUPPLY VOLTAGE Vs OUTPUT 2 OUTPUT 1 CURRENT SENSING A GND 1 1 20 1 GND Sense A Q 2 19 Sense B N.C. 1 3 18 1 N.C. Out 1 I 4 17 1 Out 4 PowerSO20 Out 2 1 5 16 1 Out 3 Vs IZZ 6 15 J Input 4 Input 1 7 14 I Enable B Enable A 8 13 1 Input 3 Input 2 I 9 12 1 VSS GND 1 10 11 1 GND D95IN239 THERMAL DATA Symbol Pa rameter PowerSO20 Multiwatt15 Unit Rth j-case Thermal Resistance Junction-case Max. - 3 C W Rth j-amb Thermal Resistance Junction-ambient