NJM2672 -1- dual h-bridge driver general description NJM2672 is a dual h-bridge driver, it consists of a ls-ttl compatible logic input stage and pair of h-bridges with a protection diode. the maximum output current is 500ma per channel. NJM2672 is able to make up pulse input stepper motor system when using with translator nju7380. ? package outline NJM2672d features ? operating voltage 4v to 45v ? maximum output current 500ma ? internal thermal shutdown circuit ? dead band protector ? specially matched to translator (stepping motor controller ) nju7380 ? package dip18 block diagram lo g ic lo g ic ma1 mb1 vmm1 vmm2 mb2 ma2 phase1 dis1 phase2 dis2 vcc gnd e2 e1 tsd
NJM2672 - 2 - pin configuration absolute maximum ratings (ta=25 c) parameter symbol ratings unit note voltage motor supply v mm 45 v logic supply v cc v cc v logic inputs v in -0.3 7 v current motor output current i out 500 ma logic input cuurent i l -10 ma temperature operating temperature topr -40 85 c storage temperature tstg -55 150 c total power dissipation dip18 package p d 1.3 w device itself 1.v mm 2 2.mb2 3.e2 4.ma2 5.power gnd 6.ma1 7.e1 8.mb1 9.v mm 1 10.gnd 11.phase1 12.dis1 13.v cc 14.nc 15.nc 16.dis2 17.phase2 18.gnd 1 2 3 16 15 14 13 5 6 7 12 11 10 8 9 4 1 7 1 8
NJM2672 - 3 - recommended operating conditions (ta=25 c) parameter symbol ratings unit note motor supply v mm 4 40 v logic supply v cc 4.75 5.25 v maximum output current i out 350 ma electrical characteristics (ta=25 c) parameter symbol test condition min. typ. max. unit ? ? ? ? general supply current 1 i cc 1 dis1=dis2=l - 36 48 ma supply current 2 i cc 2 dis1=dis2=h - 2.6 3.3 ma thermal shutdown tempereture tsd - - 170 - c ? ? ? ? logic inputs l level input voltage v il - - - 0.6 v h level input voltage v ih - 2.0 - - v l level input current i il - - - 20 a h level input current i ih - -0.2 - - a ? ? ? ? motor outputs upper transistor saturation voltage v ou i out =300ma - 1.1 1.4 v lower transistor saturation voltage v ol i out =300ma - 0.4 0.8 v upper diode forward voltage drop v fu i out =300ma - 1.1 1.4 v lower diode forward voltage drop v fl i out =300ma - 1.1 1.4 v upper transistor leakage voltage v ou - leak v mm =40v,dis1=dis2=h - - 100 a lower transistor leakage voltage v ol - leak vo=12v - - 100 a
NJM2672 - 4 - typical application timing chart 12 phase1 dis1 phase2 dis2 pb dis1 pa vdd a cd setp dir hsm reset sgnd ct pgnd mo vcc ma1 vmm1 vmm2 stepper motor mb1 ma2 mb2 gnd e1 e2 NJM2672 nju 7380 2 1 3 4 5 67 8 10 11 13 14 9 +5v vcc vmm gnd(vcc) gnd(vmm) 0.1 f mo 10 f + 4.7 f direction step half / full reset dis2 phase1 dis2 ima1 phase2 dis1 full step half step ima2
NJM2672 - 5 - memo the specifications on this data book are only given fo r information, without any guarantee as regards either mistakes o r omissions. the application circuit in this data book are describe d only to show representative usages of the product and no t intended for the guarantee or permission of any right includin g the industrial rights.
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