Data Sheet

ManualsBrandsSeeedStudio ManualsElectronic Experimentation PartsSeeedstudio Grove 6-15V, 2A Dual I2C Motor Driver

L298

Jenuary 2000

DUAL FULL-BRIDGE DRIVER

Multiwatt15

ORDERING NUMBERS : L298N (Multiwatt Vert.)

L298HN (Multiwatt Horiz.)

L298P (PowerSO20)

BLOCK DIAGRAM

.OPERATING SUPPLYVOLTAGEUP TO 46 V

.TOTAL DC CURRENT UP TO 4 A

LOW SATURATION VOLTAGE

.OVERTEMPERATURE PROTECTION

LOGICAL ”0” INPUT VOLTAGE UP TO 1.5 V

(HIGH NOISE IMMUNITY)

DESCRIPTION

The L298 is an integratedmonolithic circuit in a 15-

lead Multiwatt and PowerSO20 packages. It is a

high voltage,high current dual full-bridge driver de-

signedto acceptstandardTTL logiclevelsanddrive

inductive loads such as relays, solenoids, DC and

steppingmotors. Two enableinputsare providedto

enableor disablethe deviceindependentlyofthein-

put signals. The emitters of the lower transistors of

each bridge are connected togetherand the corre-

spondingexternalterminal can be used for the con-

nectionofanexternalsensingresistor.Anadditional

supplyinput is provided so that the logic works at a

lower voltage.

PowerSO20



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Summary of content (13 pages)

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查询L298供应商 L298  DUAL FULL-BRIDGE DRIVER .. .. . OPERATING SUPPLY VOLTAGE UP TO 46 V TOTAL DC CURRENT UP TO 4 A LOW SATURATION 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 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.
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L298 ABSOLUTE MAXIMUM RATINGS Symb ol Parameter Value Unit VS Power Supply 50 V V SS Logic Supply Voltage 7 V –0.3 to 7 V 3 2.5 2 A A A VI,Ven IO Vsens Input and Enable Voltage Peak Output Current (each Channel) – Non Repetitive (t = 100µs) –Repetitive (80% on –20% off; ton = 10ms) –DC Operation Sensing Voltage –1 to 2.
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L298 PIN FUNCTIONS (refer to the block diagram) MW.15 Po werSO Name 1;15 2;19 Sense A; Sense B Between this pin and ground is connected the sense resistor to control the current of the load. Fun ction 2;3 4;5 Out 1; Out 2 Outputs of the Bridge A; the current that flows through the load connected between these two pins is monitored at pin 1. 4 6 VS Supply Voltage for the Power Output Stages. A non-inductive 100nF capacitor must be connected between this pin and ground.
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L298 ELECTRICAL CHARACTERISTICS (continued) Symbol Parameter Test Co nditions Min . Typ . Max. Unit T1 (Vi) Source Current Turn-off Delay 0.5 V i to 0.9 I L (2); (4) 1.5 µs T2 (Vi) Source Current Fall Time 0.9 IL to 0.1 IL (2); (4) 0.2 µs T3 (Vi) Source Current Turn-on Delay 0.5 V i to 0.1 I L (2); (4) 2 µs T4 (Vi) Source Current Rise Time 0.1 IL to 0.9 IL (2); (4) 0.7 µs T5 (Vi) Sink Current Turn-off Delay 0.5 V i to 0.9 I L (3); (4) 0.
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L298 Figure 3 : Source Current Delay Times vs. Input or Enable Switching. Figure 4 : Switching Times Test Circuits.
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L298 Figure 5 : Sink Current Delay Times vs. Input 0 V Enable Switching. Figure 6 : Bidirectional DC Motor Control.
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L298 Figure 7 : For higher currents, outputs can be paralleled. Take care to parallel channel 1 with channel 4 and channel 2 with channel 3. APPLICATION INFORMATION (Refer to the block diagram) 1.1. POWER OUTPUT STAGE Each input must be connected to the source of the driving signals by means of a very short path. TheL298integratestwo poweroutputstages(A ; B).
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L298 This solution can drive until 3 Amps In DC operation and until 3.5 Amps of a repetitive peak current. OnFig 8 it is shownthe driving ofa twophasebipolar stepper 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 the application of Fig 8. Fig 10 shows a second two phase bipolar stepper motor control circuit where the current is controlled by the I.C. L6506.
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L298 Figure 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.
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L298 mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 D 0.063 1 0.039 E 0.49 0.55 0.019 F 0.66 0.75 0.026 G 1.02 1.27 1.52 0.040 0.050 0.060 G1 17.53 17.78 18.03 0.690 0.700 0.710 H1 19.6 0.022 0.030 0.772 H2 20.2 0.795 L 21.9 22.2 22.5 0.862 0.874 0.886 L1 21.7 22.1 22.5 0.854 0.870 0.886 L2 17.65 18.1 0.695 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 L7 2.65 2.9 0.104 0.
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L298 mm DIM. MIN. TYP. inch MAX. MIN. TYP. MAX. A 5 0.197 B 2.65 0.104 C 1.6 0.063 E 0.49 0.55 0.019 0.022 F 0.66 0.75 0.026 0.030 G 1.14 1.27 1.4 0.045 0.050 0.055 G1 17.57 17.78 17.91 0.692 0.700 0.705 H1 19.6 0.772 H2 20.2 0.795 L 20.57 0.810 L1 18.03 0.710 L2 2.54 0.100 L3 17.25 17.5 17.75 0.679 0.689 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 L5 5.28 L6 OUTLINE AND MECHANICAL DATA 0.208 0.094 2.38 L7 2.65 2.9 0.104 0.
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L298 DIM. A a1 a2 a3 b c D (1) D1 E e e3 E1 (1) E2 E3 G H h L N S T MIN. mm TYP. 0.1 0 0.4 0.23 15.8 9.4 13.9 MAX. 3.6 0.3 3.3 0.1 0.53 0.32 16 9.8 14.5 MIN. 0.004 0.000 0.016 0.009 0.622 0.370 0.547 1.27 11.43 10.9 inch TYP. 0.050 0.450 11.1 0.429 2.9 6.2 0.228 0.1 0.000 15.9 0.610 1.1 1.1 0.031 10° (max.) 8° (max.) 5.8 0 15.5 0.8 OUTLINE AND MECHANICAL DATA MAX. 0.142 0.012 0.130 0.004 0.021 0.013 0.630 0.386 0.570 10 0.437 0.114 0.244 0.004 0.626 0.043 0.043 JEDEC MO-166 0.
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L298 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice.