94 ics 1-2-1 2-phase stepper motor unipolar driver ics parameter symbol ratings unit sla7027mu sla7024m sla7026m motor supply voltage v cc 46 v fet drain-source voltage v dss 100 v control supply voltage v s 46 v input voltage v in 7v reference voltage v ref 2v output current i o 1 1.5 3 a power dissipation p d1 4.5 (without heatsink) w p d2 35 (t c =25 c) w channel temperature t ch +150 c storage temperature t stg ?0 to +150 c electrical characteristics (t a =25 c) ratings parameter symbol sla7027mu sla7024m sla7026m unit min. typ. max. min. typ. max. min. typ. max. control supply current i s 10 15 10 15 10 15 ma condition v s =44v v s =44v v s =44v control supply voltage v s 10 24 44 10 24 44 10 24 44 v fet drain-source voltage v dss 100 100 100 v condition v s =44v, i dss =250 av s =44v, i dss =250 av s =44v, i dss =250 a fet on voltage v ds 0.85 0.6 0.85 v condition i d =1a, v s =14v i d =1a, v s =14v i d =3a, v s =14v fet drain leakage current i dss 444 ma condition v dss =100v, v s =44v v dss =100v, v s =44v v dss =100v, v s =44v fet diode forward voltage v sd 1.2 1.1 2.3 v condition i d =1a i d =1a i d =3a i ih 40 40 40 a ttl input current condition v ih =2.4v, v s =44v v ih =2.4v, v s =44v v ih =2.4v, v s =44v i il ?.8 ?.8 ?.8 ma condition v il =0.4v, v s =44v v il =0.4v, v s =44v v il =0.4v, v s =44v v ih 222 ttl input voltage condition i d =1a i d =1a i d =3a v (active high) v il 0.8 0.8 0.8 condition v dss =100v v dss =100v v dss =100v v ih 222 ttl input voltage condition v dss =100v v dss =100v v dss =100v v (active low) v il 0.8 0.8 0.8 condition i d =1a i d =1a i d =3a t r 0.5 0.5 0.5 condition v s =24v, i d =0.8a v s =24v, i d =1a v s =24v, i d =1a switching time t stg 0.7 0.7 0.7 s condition v s =24v, i d =0.8a v s =24v, i d =1a v s =24v, i d =1a t f 0.1 0.1 0.1 condition v s =24v, i d =0.8a v s =24v, i d =1a v s =24v, i d =1a absolute maximum ratings 2-phase/1-2 phase excitation sla7027mu/sla7024m/sla7026m dc characteristics ac characteristics
95 ics sla7027mu/sla7024m/sla7026m internal block diagram t ypical connection diagram (recommended component values) 1, 8, 11, 18pin description of pins excitation input signal active h active l pin 1 out a out a pin 8 out a out a pin 11 out b out b pin 18 out b out b reg in a v sa r sa 23 4 g a t da ref a 9 reg in a 81 6 5 7 12 17 16 1811 in b in b v sb g b t db ref b r sb 14 13 15 10 + + + + active high 712 8 1 18 11 v sa v sb out a out b out b out a r sa ref a ref b r sb g a g b 9314 10 4 15 c 4 r 6 r 5 r 2 r 1 r 4 r 3 c 1 c 2 13 t da t db in a in a in b in b in a in a in b in b 6 5 17 16 active high + v cc (46v max) v b (5v) rs rs c 3 sla7024m 7026m 7027mu 2 active low 712 8 1 18 11 v sa v sb out a out b out b out a r sa ref a ref b r sb g a g b 9314 10 4 15 c 4 r 6 r 5 r 2 r 1 r 4 r 3 c 1 c 2 13 t da t db in a in a in b in b in a in a in b in b 6 5 17 16 active low + v cc (46v max) v b (5v) rs rs c 3 sla7024m 7026m 7027mu 2 r 1: 510 ? r 2: 100 ? (vr) r 3: 47k ? r 4: 47k ? r 5: 2.4k ? r 6: 2.4k ? c 1: 470pf c 2: 470pf c 3: 2200pf c 4: 2200pf r s: 1 ? typ (7024m) 0.68 ? typ (7026m) 1.8 ? typ (7027mu) excitation signal time chart 2-phase excitation clock 012301 in a hllhhl in a lhhllh in b hhl lhh in b llhhll 1-2 phase excitation clock 0 1 2 3 4 5 6 7 0 1 2 3 in a hhl l lllhhhll in a lllhhhlllllh in b lhhhll lllhhh in b lllllhhhllll excitation signal time chart 2-phase excitation clock 012301 in a lhhllh in a hllhhl in b llhhll in b hhl lhh 1-2 phase excitation clock 0 1 2 3 4 5 6 7 0 1 2 3 in a llhhhhhlllhh in a hhhl l l hhhhhl in b hlllhhhhhlll in b h hhhhl l lhhhh r 1: 510 ? r 2: 100 ? (vr) r 3: 47k ? r 4: 47k ? r 5: 2.4k ? r 6: 2.4k ? c 1: 470pf c 2: 470pf c 3: 2200pf c 4: 2200pf r s: 1 ? typ (7024m) 0.68 ? typ (7026m) 1.8 ? typ (7027mu) (1 to 2w) (1 to 2w) external dimensions (zip18 with fin [sla18pin]) 31 0.2 24.4 0.2 16.4 0.2 3.2 0.15 16 0.2 13 0.2 9.9 0.2 part no. lot no. 3.2 0.15 3.8 4.8 0.2 1.7 0.1 2.45 0.2 r-end 6.7 0.5 9.7 +1 ?.5 (3) 0.55 +0.2 ?.1 4 0.7 1 +0.2 ?.1 17 p1.68 0.4 =28.56 1 0.65 +0.2 ?.1 31.3 0.2 forming no. no.871 forming no. no.872 123 18 123 18 17 p1.68 0.4 =28.56 1 0.65 +0.2 ?.1 1 +0.2 ?.1 3 0.6 0.55 +0.2 ?.1 2.2 0.6 6 0.6 7.5 0.6 4.6 0.6 1.6 0.6 ....... ....... (unit : mm) product mass : approx.6g
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