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| www.shindengen.co.jp/product/semi/ u170-1 features absolute maximum ratings ta = 2 5 ta= 2 5 unless otherwise specified constant current control function (fixed frequency pwm control) 2 1-2 ena 2-phase input (half step drive uses ena together) !" #$%&'()*+,-. current decay mode (fast decay or slow decay) /$012345 noise cancellation function 6789 cross conduction protection :;<= > overheating alarm function ?@abc$d ef built-in flywheel and flyback diodes parameter symbol rating unit logic supply voltage v cc 0 6 v ! logic input voltage v logic 0 v cc v "#$ load supply voltage v mm 35 v %! & output current i c 1.3 a '()*)#+,)-#. & flywheel diode current i f 1.3 a /012 power dissipation p d 3w 3456 storage temperature t stg -40 150 7 856 junction temperature t j 150 www.shindengen.co.jp/product/semi/ u170-1 electrical characteristics ta= 2 5 ,v cc =5v ta = 2 5 ,v cc =5v unless otherwise specified parameter symbol 9:; condition min. typ. max. unit output stage vmm <= & 2 >? off @ load supply current 2 circuit off i mm (off) v mm =35v, v ena =5v - - 8 ma ab%!cd output saturation voltage upper side v ce sat hi c =0.8a - 1.0 1.4 v eb%!cd output saturation voltage lower side v ce sat li c =0.8a - 1.0 1.4 v ab%!f# & output leakage current upper side irh v mm =35v, v out =0v - - 10 g a eb%!f# & output leakage current lower side irl v out =35v, v rs =0v - - 10 g a ab,)-#.h diode forward drop upper side v f hi f =0.8a - 1.3 1.6 v eb,)-#.h diode forward drop lower side v f li f =0.8a - 1.3 1.5 v logic stage v cc <= & 2 >? on @ logic supply current 2 circuit on i cc (on) v ena =0a - 25 33 ma v cc <= & 2 >? off @ logic supply current 2 circuit off i cc (off) v ena =5v - 19 26 ma phase/enable/decay i h j ! phase/enable/decay i h j input voltage v pha/ena/dec h2.3-v cc v phase/enable/decay i l j ! phase/enable/decay i l j input voltage v pha/ena/dec lgnd-0.8v phase/enable/decay i h j ! & phase/enable/decay i h j input current i pha/ena/dec hv pha/ena/dec =5v - - 10 g a phase/enable i l j ! & phase/enable i l j input current i pha/ena lv pha/ena =0v - -100 -150 g a decay i l j ! & decay i l j input current i dec lv dec =0v - -200 -300 g a vref ! & vref input current i ref v ref =0v - -1 -10 g a vs ! & vs input current is v s =0v - -1 -10 g a comp klmn*#+. comparator threshold vs v ref =0.5v 0.475 0.5 0.525 v opqrstuv chopping frequency f chop ct=3300pf,rt=18k w -23- khz x(ryrs$)z blanking time t b ct=3300pf - 1.55 - g s vs [\ vs maximum voltage v s (max) --1.0 v ]^_(#z`abc & thermal alarm leakage current i r (alm) v alm =5v - - 10 g a ]^_(#zde`a & thermal alarm output current i alm v alm =0.5v - - 2 ma ]^_(#zde56 thermal alarm operating temperature t alm - 140 - www.shindengen.co.jp/product/semi/ u170-1 recommended external components value recommended operating conditions ta = 2 5 ta = 2 5 unless otherwise specified !"#$%& setting of output current and chopping frequency output current setting a chopping frequency setting hz '()* typical application symbol fg recommendation unit rs 0.68 w rt 18 k w ct 3300 pf r1+r2 h 10 k w parameter symbol fg recommendation unit 7 856 junction temperature t j -25 120 logic supply voltage v cc 4.75 5.25 v "#$ load supply voltage v mm 5 31 v constant current waveform motor current ichop t=1/fchop lchop vref rs fchop 1 0.75 ct rt www.shindengen.co.jp/product/semi/ u170-1 !+,- pin assignment top view mtd2006f ./01 truth table decay decay mode switching transistor l fast both source and sink transistor h slow only source transistor package hsop28 i : don't care ena a or b pha a or b out 1 or 4 out 2 or 3 lllh lhhl h i off off ] ? ? ]>;tm`oxz m?7 {?] e{w z]? y?s&mmh`?b{ ???tgl^?om? pt a ?w ? + jxz ` $s ?t sua{^?? a j; m?? $`om?b{ fw a ?w? ??? ?^u ? \?? .t1?t?b?os??o?m ?z ?t s?a{^?? ? z ? ; mw;+z ?t]?;w ?tx ?c? 2t pt?]ww z? y? ?o<^m{ ptw a ?w ? + jx?<w?ot `os??b{ 2 a j; m3 ?e??z0" sw??;+z ?; z;+z- +z"7 ;+z????y??;+zh ?z ?^;+z?1??;+z?;;+ s 2 ? ; m3 ;+ lz + sz,e; ?;+z| ??;+zwbw \;+z ? ?;+z?? ;+ s 2 ? ; m3 j?? m?3az?;+z? |;+z? 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