?a??????a CW34063CP dc/dc ?????????a 1. ?????? cw3 406 3cp ???? ?? dc / d c ??? ?? ???a ? o? ?|?? ?? ????a ?? ?a1|? ?ae? 1|?e ?e?a?213?????1? ??? ??F???t?????????????? ?y??o ? ??3? ?a1? ? ??? a? ?a??1 y ?1o1? |? ???? | ?a? ?a? ?t ??? ???a 3.0v ~ 40v ??1|??1 ???? ??t?1 ?3??a1?? 1.5a 100khz 1?a ????? 2% ae?? dip8 2. 1|????y???? 2. 1 1|??? 2. 2 y???? y?? ? o? 1| ? y?? ? o? 1| ? 1 c sw ?a1????? 5 i n com ??????? 2 e sw ?a1?l??? 6 v cc ?? 3 c t ??y? 7 i pk ??t?1??e 4 g n d ? 8 c dr ?y?????? ?t?y?a???1ye?t1??? ?? ?-????t?yeo?aa 14 o? ?? 0510 5807123-5506 ??? 0510 5803016 ? 1 3 12 6 3 1 2 3 4 5 6 7 8 ???? s ??? 100 1.25v + - t2 t1 q r ct ipk
?a??????a CW34063CP 3. ??e? 3. 1 ???t2?y 3y?e1?? t am b = 25 2? y ?? 3? ? o? ? ?t ?? ? ? ? ?? ????1 v cc 4 0 v ???????1 ?? v ir(sw ) -0.3 ~ 40 m a ?a1???????1 v c(sw ) 4 0 v ?a1?l?????1 v e(sw ) ( v p i n 1 = 4 0 v ) 4 0 v ?a1? c ? e ??1 v ce(sw ) 4 0 v ?y????????1 v c 4 0 v ?y??????? [1] ic -55 ~ 100 m a ?a1?? i s w 1 . 5 a 1|o? p d 1 . 2 5 w 1??a t j 1 5 0 1??3?a? t am b 0 ~ 70 ???a? t stg -65 ~ 150 [1] ?e?????a1|o??t?? 3. 2 ??e? 3y?e1?? t am b = 25 v cc =5v 1? ? ? 2? y ?? 3? ? o? 2a ? ? ?t ?e? ?e ?? ??? ??? i cc vcc=5.0v ~ 40v c t =1.0nf , pin7=vcc vpin5 vth,pin=gnd ???aa 2 . 5 4 . 0 m a ???? ?a f osc vpin5 = 0v , c t = 1 . 0 2 4 3 3 4 2 k h z 3??? i chg vpin5 = 5.0v ~ 40v 24 35 42 a ??? i dischg vpin5 = 5.0v ~ 40v 140 200 260 a ?? 3??? ?? i disch g / i chg pin7 ~ v cc 5 . 2 6 . 2 7 . 5 ??t?1??e ??1 v ipk 2 5 0 3 0 0 3 5 0 m v ?3??a1? [1] o??1 v ce ???a? i sw =1.0a pin1 to pin8 1 . 0 1 . 3 v o??1 v ce (sat) i sw =1.0a,rpin8=82 ~vcc, 20 0 . 4 5 0 . 7 v ?|??1??? h fe i sw =1.0a,v ce = 5.0v 50 120 ???? off ?? ? i c (of f ) v ce = 40v 0.01 100 a t am b = 25 1 . 2 2 5 1 . 2 5 1 . 2 7 5 ???t??1 v th t am b =0 ~ 70 1 . 2 1 1 . 2 9 v ???t??1??a ??? r eg v cc = 3.0 ~ 40v 1.4 5.0 m v ??????? i ib v i n = 0v -40 -400 na ? 2 3 12 6 3
?a??????a CW34063CP [1] 1 2a???? 1?e?????a?3???? ?3???a?????????3?a? 2 ? ??a1? ? 30 0ma ?????y?? ( 3 00m a) ?1??3? ?a1? ??y??? ? 1yo ? ???? ?11 ??? ?? 2. 0 s ??? ?o ? ??a 30 khz ??? ???? ? 1??? ?? ??a ??? 1??? ???? ?? ?? ?? ?? ?11?e ?a ?3??a1? 2? ?o ?????2??l ?1?1??????11 ?1??ae?3??y??? ?3??a1?????? ic,output/(ic,driver 7.0m a* ) 10 4. ?e???? \ ? 3 3 12 6 3 0 ????? ic a pin1 7 8=vcc vcc=5.0v 1.0 1.0 1.2 1.4 1.6 0.8 1.2 0.6 1.4 0.4 1.6 0.2 1.8 pin3 5=gnd ta=25 0 l???? ie a pis7=vcc vcc=5.0v 1.0 1.0 1.2 1.4 1.6 0.8 1.2 0.6 1.4 0.4 1.6 0.2 1.8 pins2,3,5=gnd ta=25 -55 ??3?a? ta i 3? =i ? vcc=5.0v 200 75 100 125 50 240 25 280 0 320 -25 400 0 ????1 vcc v pis7=vcc ct=1.0nf 0 30 35 40 15 25 0.8 20 2.4 10 5.0 3.2 pins2=gnd 360 1.6 ??? icc ( ma ) o?1? vce v o?1? ice v ?t?????1 vpk v vce --- ie ic -- ice vpk -- ta icc -- vcc pin7=vcc vcc=5.0v pin2=gnd ta=25 0 pin7=vcc vcc=5.0v 1.0 1.0 10 10 0.1 100 1000 pin5=gnd ta=25 pins1,5,8 ?aa ct=1.0nf 20mv/div 10 s/div off t on t 0.02 0.2 2.0 ?????y ct (nf) ?3??a1??? ton-toff ( s) ?????1 v ??y2e? ton-toff -- ct
?a??????a CW34063CP 5. |???a 5. 1 |???a 1 ? 4 3 12 6 3 1 5 6 7 8 4 3 2 180 47k r2 2.2k r1 + 100 f 1500pf ct 330 f co 0.22 rsc l vin + 170 h 28v/175ma vout 1.0 h vout 100 f + vin vout + 1 5 6 7 8 4 3 2 vin vout + r ro vin 1 5 6 7 8 4 3 2 rsc rsc 12v CW34063CP CW34063CP CW34063CP
?a??????a CW34063CP 5. 2 |???a 2 vin ? 5 3 12 6 3 953 r1 8.2k r2 + 100 f 1500 1000 f co l vin + 88 h -12v/100ma vout 1.0 h vout 100 f + 4.5v to 6v pf vout + vin vout + pnp1 1 5 6 7 8 4 3 2 1 5 6 7 8 4 3 2 rsc 1 5 6 7 8 4 3 2 rsc 0.24 rsc CW34063CP CW34063CP CW34063CP
?a??????a CW34063CP 5. 3 |???a 3 6. ae?3?? ? 6 3 12 6 3 3.6k r2 1.2k r1 + 100 f 470 470 f co l vin + 220 h 5.0v/500ma vout 1.0 h vout 100 f + 25v pf vin vout + vin vout + 1 5 6 7 8 4 3 2 1 5 6 7 8 4 3 2 rsc 1 5 6 7 8 4 3 2 rsc 0.33 rsc CW34063CP CW34063CP CW34063CP
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