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Chapter 2 I Electronics






                                                                            L298


                                                  DUAL FULL-BRIDGE DRIVER


             .OPERATINGSUPPLYVOLTAGE UPT0 46 V
             • TOTAL DC CURRENT UP TO 4 A
             • LOW SATURATiON VOLTAGE
             • OVERTEMPERATURE PROTECTION
                                                                         '
                                                                        "
                                                                         ~
             • LOG ICAL "0" INPUT VOLTAGE UP TO 1.5 V
               (HIGH NOISE IMMUN ITY)                                  'ili.
             DESCRIPTION                                                 ~  .
                                                      Multlwatt1 5     Powe rS0 20
             The L29g is an integrated monolithiccircuit in a 15-
             lead Multiwatt and PowerS020 packages. It is a
             high voltage, high current dual full-bridge driver de-
             signedto acceptstandardTTL logiclevels and drive  P RDERING NUM B ERS: L29SN (Multiwatt Ve rt. )
             inductive loads such as relays, solenoids, DC and    l 298HN (Mul tiwatt Honz)
                                                                  L298P (Po werS020j
             steppingmotors.Too enableInputs are providedto
             enableor disablethe deviceindependentlyof the in-
             put signals. The emitters of the lower transistorsof  nectionofan externalsensingresistor.Anadditional
             each bridge are connected togetherand the corte-  supply input is providedso that the logic worksat a
             spondingexternalterminal can be usedfor thecon-  lower voltage.
             BL OCK DIA GRAM

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             October 1998                                                        1/13


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