DRI0009

L298 DUAL FULL-BRIDGE DRIVER . OPERATING SUPPLY VOLTAGE UP TO 46 V . TOTAL DC CURRENT UP TO 4 A . LOW SATURATION VOLTAGE . OVERTEMPERATURE PROTECTION . LOGICAL0 INPUT VOLTAGE UP TO 1.5 V (HIGH NOISE IMMUNITY) DESCRIPTION PowerSO20 Multiwatt15 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 de- ORDERING NUMBERS : L298N (Multiwatt Vert.) signed to accept standard TTL logic levels and drive L298HN (Multiwatt Horiz.) inductive loads such as relays, solenoids, DC and L298P (PowerSO20) stepping motors. Two enable inputs are provided to enable or disable the device independently of the in- nection of an external sensing resistor. An additional put signals. The emitters of the lower transistors of supply input is provided so that the logic works at a each bridge are connected together and the corre- lower voltage. sponding external terminal can be used for the con- BLOCK DIAGRAM Jenuary 2000 1/13L298 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit V Power Supply 50 V S V Logic Supply Voltage 7 V SS V ,V Input and Enable Voltage 0.3 to 7 V I en I Peak Output Current (each Channel) O 3 A Non Repetitive (t = 100s) 2.5 A Repetitive (80% on 20% off t = 10ms) on 2 A DC Operation V Sensing Voltage 1 to 2.3 V sens P 25 W tot Total Power Dissipation (T = 75C) case T Junction Operating Temperature 25 to 130 C op T , T Storage and Junction Temperature 40 to 150 stg j C PIN CONNECTIONS (top view) 15 CURRENT SENSING B 14 OUTPUT 4 13 OUTPUT 3 12 INPUT 4 11 ENABLE B 10 INPUT 3 9 LOGIC SUPPLY VOLTAGE V SS Multiwatt15 8 GND 7 INPUT 2 6 ENABLE A 5 INPUT 1 4 SUPPLY VOLTAGE V S 3 OUTPUT 2 2 OUTPUT 1 1 CURRENT SENSING A TAB CONNECTED TO PIN 8 D95IN240A GND 1 20 GND Sense A 2 19 Sense B N.C. N.C. 3 18 Out 1 4 17 Out 4 PowerSO20 Out 2 5 16 Out 3 V 6 15 Input 4 S Input 1 7 14 Enable B Enable A 8 13 Input 3 Input 2 9 12 VSS GND 10 11 GND D95IN239 THERMAL DATA Symbol Parameter PowerSO20 Multiwatt15 Unit R Thermal Resistance Junction-case Max. 3 C/W th j-case R Thermal Resistance Junction-ambient Max. 13 (*) 35 th j-amb C/W (*) Mounted on aluminum substrate 2/13