an 6 651 l i n e a r i n t e g r a t e d c i rcuit motor speed control circuit description t he a n 6651 i s a m o n oli t h i c i n t eg r a t ed c i r c u i t designed for the rotating control of a compact dc motor which is used for a tape recorder, recorder player etc. features *wide operating supply voltage: vcc=3.5v ~ 14.4v *small four-lead plastic packer for compact motor. *few external components *stable low reference voltage (1.0v, typical) *wide motor speed setting *reverse voltage protection circuit built-in to-126b 1 1: vcc 2: control 3: gnd 4: motor block diagram wing shing computer components co., (h.k.)ltd. tel:(852)2341 9276 fax:(852)2797 8153 hom e p a g e : h t tp : / / w w w . w in g s h in g . c o m e - m a i l: ic @ wi ng sh i ng .c om
an 6 651 l i n e a r i n t e g r a t e d c i rcuit absolute maximum ratings (ta=25 c) parameter symbol value unit supply voltage v cc 14.4 v supply current (note 1) i cc 2000 ma power dissipation (ta=25 c) (note 2) p d 1300 mw operating temperature t opr -20 to +75 c storage temperature t stg -40 to +150 c terminal voltage vn-3 (n=1,2,4) -0.5 to +14.4 v terminal current i 1 150 ma terminal current i 2 100 ma terminal current (note 1) i 3 -2000 (min.) ma terminal current (note 1) i 4 1750 ma note 1: t 5 sec note 2: ta=25 c, with a 10 x 10 mm bakelite pcb (3.5 m cu leaf) electrical characteristics (ta=25 c, unless otherwise specified) parameter symbol test conditions min typ max unit reference voltage vref v cc =6v, ra=1k ? 0.85 1.00 1.15 v base current i bias v cc =6v 0.8 1.8 ma current proportional constant k v cc =6v, ? i4=40ma 35 40 45 saturation voltage v sat v cc =4.2v,ra=5.0 ? 1.15 2.0 v voltage characteristics 1 v cc =3.5v~14v ra=1k ? -0.1 %/v voltage characteristics 2 v cc =3.5v~14v ? i4=40ma 0.2 %/v current characteristics 1 i4=50ma~200ma -0.02 %/ma current characteristics 2 i4=50ma~200ma -0.01 %/ma temperature characteristics 1 ta=-20~+75 c v cc =6v ra=1k ? 0.01 %/ c ? vref vref ? vcc ? k k ? vcc ? vref vref ? i4 ? k k ? i4 ? vref vref ? ta
an 6 651 l i n e a r i n t e g r a t e d c i rcuit parameter symbol test conditions min typ max unit temperature characteristics 2 ta=-20~+75 c ? i4=40ma 0.01 %/ c characteristics curve application circuit ? k k ? ta
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