a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw featur es ? 3.3v an d 5v ou tpu t v e r s ions ? guara n teed 3a out put l o ad curre nt ? r e qui res sm al l num ber ofe x t e r n al com p o n ent s ? ex cellen t line and lo ad reg u latio n ? 150kh z fi x e d freq u e n c y in t e rn al o s cillato r ? b u ilt-in ttl on /of f c o n t ro l ? l o w po we r st and b y m ode, i q t y pi cal ly 80 ua ? b u ilt-in cu rren t li m it p r o t ectio n ? b u ilt-in th ermal sh u t down circu it. ? operating vo ltag e : 4.5v~ 2 5 v ? t o -265 pac k age application s h i gh - e f f icien c y step -d own r e g u l ator tft scala r board on -car d swi t c h i ng re gul at o r s description th e a t 179 6 ser i es o f r e gu lato r s ar e step- d o w n (b uc k) dc / d c co nve rt er , ca pabl e o f dri v i n g a 3a lo ad with ex cellen t lin e and lo ad reg u l atio n. r e qui ri ng a m i nim u m num ber of ex t e rnal com pone nt s, t h ese re gul at o r s are si m p l e t o u s e . th e a t 1 796 ser i es o p e r a tes at a sw it ch ing fre que ncy o f 15 0 k hz . a vai l a bl e i n a st an dar d 5-l e a d t o - 2 63 su rface m ount pac k a g e. it i n c l ud e a guara n teed 4 % to leran c e on ou tpu t voltag e un de r speci fi ed i n put v o l t a g e and o u t p ut l o ad co nd itio ns, an d 1 5 % on th e o s cillator fre que ncy . block diagram aimtr o n r e s erves the right without notice to change this cir c ui try and specifications. 1
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw pin configuration ordering i n formation part number package mar k ing a t 17 96- 50 t o -26 5 (5 .0 v v e r s i o n) a t 17 96- 5 0 a a t 17 96- 50_ pbf t o -26 5 (5 .0 v v e r s i o n) ,pb- free a t 17 96- 50a ,date co d e w ith on e b o tto m lin e a t 17 96- 33 t o -26 5 (3 .3 v v e r s i o n) a t 17 96- 3 3 a a t 17 96- 33_ pbf t o -26 5 (3 .3 v v e r s i o n) ,pb- free a t 17 96- 33a ,date co d e w ith on e b o tto m lin e a t 17 96- ad j t o -26 5 (a d j ver s ion ) a t 17 96- ad j a t 17 96- ad j_pbf t o -26 5 (a d j ver s ion ) ,pb-fr ee a t 17 96- ad j,date co d e w ith on e b o tto m lin e * for mor e mark ing information , contact our sale s r e pr esentative dir ectly pin description sym b o l p i n n o . d e s c r i p t v c c 1 p o w e r su pp l y ou t 2 swi t c h n ode c o n n ect i o n t o i n duct o r g n d 3 pow e r gr oun d fb 4 out put feed ba c k sh d n 5 on/ off co ntr o l 2
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw absolute maximum ra tings par a m e t e r s y m b o l l i m i t s u n i t po wer su p p l y vol t a ge vc c 30 v shdn p i n inpu t vo ltag e v shdn -0 .3~ + 2 5 v po wer di ssi pat i on p d in tern ally limi ted w ope r at i n g j unc t i on t e m p erat u r e t j - 3 0 ~ +125 o c s t ora g e tem p erature t stg - 6 5 ~ +150 o c therm a l r e si stance fr om junc t i on t o am bi ent ja 19 .4 o c/w therm a l r e si stance fr om junc t i on t o c a se jc 7. 7 o c/w lead t e m p era g t u re(s ol de ri n g , 5sec .) 26 0 o c hbm 2 kv esd su scep tibilit y * 2 m m 2 0 0 v 1. str e sse s beyond those liste d unde r ?absol ute m aximum ratings? may cause pe r m ane n t damage to th e d e vice . th es e are s t res s rat i n g s on ly, an d fu n c tion al operation of the device at these or any other con d i tion s b e yo n d th os e in d i cated in th e op erat i on al s ection s of th e s p ecifi catio n s is n o t imp lie d . exp o s u re to absolute max i mum rating co nditions for ext e nded periods may affec t devi ce rel iabilit y . 2. device ar e esd sensitive . handling p r eca ution r eco mmended. the human body m o del is a 100pf cap a citor d i s c h a rged th r o u g h a 1.5k ? r e sistor into e a c h pin. 3. ja i s meas u r e d w i th the comp one n t m o un ted o n an eval u a ti on pc bo ard i n fr ee ai r t h a t t h e r e quir e d ar ea of copper is 2. 5in 2 ( 1 oz .)or larger . recommen d ed operating conditio n s ( t a = 25 o c ) param e t e r s y m b o l li m i t s u n i t po wer su p p l y vol t a ge vc c 4. 5~ 2 8 v shdn p i n inpu t vo ltag e v shdn 0~ +2 0 v 3
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw electrical characteristics ( vcc = 12v , t a =+25
, unless ot her w ise noted . ) va l u e s parameter symbol condition min. t y p . m a x . unit qu iescen t curren t i oc - - 5 1 0 m a stand-by qui esce nt c u rre nt i sqc sh dn = 5v -- 80 20 0 a v il act i v e m ode -- -- 0. 6 v sh dn pi n l ogi c i n p u t vol t a ge t h resh o l d v ih s t and b y m ode 2. 0 -- -- v i il act i v e m ode -- 0. 02 5 a sh dn pi n l ogi c i n p u t current i ih s t and b y m ode -- 5 15 a out put v o l t a ge v out 4. 75 vcc 28 v 0. 2a i load 3a 3. 16 8 3 . 3 3 . 43 2 v efficiency v i n = 12v , i load = 3a 73 -- -- % out put v o l t a ge v out 4. 75 vcc 28 v 0. 2a i load 3a 4. 8 5 . 0 5. 2 v efficiency v i n = 12v , i load = 3a -- 80 -- % fb vo ltag e v fb 4. 75 vcc 28 v 0. 2a i load 3a 1. 19 3 1 . 2 3 0 1 . 26 7 v efficiency v i n = 12v , i load = 3a , v out = 3v - - 7 3 - - % satu ration vo ltag e v sat i load = 3a -- 1. 15 1. 5 v oscillato r frequ en cy f osc 12 7 1 5 0 17 3 khz maxim u m duty cycle d max fb = 0 v - - 1 0 0 - - % minim u m duty cycle d min fb = 3. 3v o r 5 v -- 0 -- % cu rren t lim i t i cl peak c u rre nt 3. 6 4. 5 5. 0 a i l1 no di ode . ca p aci t o r , i n duct o r fb = 12v , sw itch i ng o ff , o u t = 0v - - 5 0 - - a out put l e a k age cu rre nt i l2 vcc = 2 8 v -- 2 30 m a 4
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw ch1:shdn ch2:5v out put ch3:out ch4:i in fig1. 5v/2a output fig2. 5v/3a output 5
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw t y pical performance c h aracteristics: c ont i n u ous m ode s w i t c hi n g w a vef o rm s v in =20v d v out =5v d i load =2a d l= 33h c out =220 f d c out esr = 50m ? lo ad tran sien t respon se for con tin uou s m o d e v in =20v d v out =5v d i load =5 00 m a to 2a l=33h d c out =220f d c out esr=50m ? di sco n t i n uo us m ode swi t c hi n g wave f o rm s v in =20v d v out =5v d i load =90m a d l= 33h c out =220 f d c out esr = 50m ? 6
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw adjustable output applicat ion example : ) 1 2 1 ( r r v v fb out + = v v fb 23 . 1 = 7
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw application cir c uit: 8
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw 9
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw application data : quick design component selection t a ble outp ut capacitor( f/v ) input/outpu t co ndition inductor thr o ugh hole ele c tr olytic surface mount t a ntalu m outp ut v o lt age (v) load curr ent (a) max. input v o lt age (v) inductance ( h) curr ent (a) nichicon pl series panasonic hf q s eries sprague 595d series av x t p s series 8 2 2 3. 5 560/2 5 560/2 5 330/1 0 220/1 0 1 5 3 3 3. 5 330/3 5 330/3 5 330/1 0 220/1 0 3 2 5 4 7 3. 5 270/3 5 330/3 5 330/1 0 220/1 0 9 2 2 3. 1 560/1 6 470/2 5 330/1 0 220/1 0 1 5 6 8 3. 1 180/3 5 180/3 5 270/1 0 100/1 0 5 2 2 5 6 8 3. 1 180/3 5 180/3 5 270/1 0 100/1 0 5 2 2 3. 5 560/1 6 470/2 5 390/6. 3 330/6. 3 1 2 2 2 3. 5 560/2 5 560/3 5 390/6. 3 330/6. 3 3 2 5 3 3 3. 5 470/3 5 680/3 5 390/6. 3 330/6. 3 6 2 2 3. 1 470/3 5 470/2 5 390/6. 3 330/6. 3 1 2 3 3 3. 1 330/3 5 330/3 5 390/6. 3 330/6. 3 3. 3 2 2 5 4 7 3. 1 270/5 0 330/3 5 330/1 0 220/1 0 quick design component selectio n t a ble for adjustable ou tpu t thr o ugh hole ou tput capacitor surface mount output capacitor outp ut v o lt age (v) panasonic hf q s eries ( f/v ) nichicon pl series ( f/v ) feedforw ard capacitor panasonic hf q s eries ( f/v ) nichicon pl series ( f/v ) feedforw ard capacitor 2 8 2 0 / 3 5 820/3 5 33nf 330/6. 3 4 7 0 / 4 33nf 4 5 6 0 / 3 5 470/3 5 10nf 330/6. 3 390/6. 3 10nf 6 470/2 5 470/2 5 3. 3nf 2 2 0 / 1 0 330/1 0 3 . 3nf 9 330/2 5 330/2 5 1. 5nf 1 0 0 / 1 6 180/1 6 1 . 5nf 1 2 3 3 0 / 2 5 330/2 5 1 n f 100/1 6 180/1 6 1nf 1 5 2 2 0 / 3 5 220/3 5 680pf 6 8 / 2 0 120/2 0 680pf 2 4 220/3 5 150/3 5 560pf 3 3 / 2 5 3 3 / 2 5 2 2 0 p f diode selecti o n t a ble 3a diode 4~6a diode surface mount thr o ugh hole surface mount thr o ugh hole vr(v ) schott k y schott k y s c h o t t k y s c h o t t k y 2 0 s k 3 2 1 n 5 8 2 0 sr302 mbr320 1 n 5 8 2 3 sr502 sb520 3 0 3 0 w q 0 3 sk 33 1n5821 mbr330 31dq 03 50wq 0 3 1 n 5 8 2 4 sr503 sb530 4 0 s k 3 4 mbrs340 30wq 04 1n5822 sr304 mbr340 31dq 04 50wq 0 4 1 n 5 8 2 5 sr504 sb540 5 0 s k 3 5 mbrs360 30wq 05 murs320 30wf 10 sr305 mbr350 31dq 05 mur320 50wq 05 50wf 10 sb550 50sq 080 mur620 h e r601 10
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw package ou tlines: t o -265 11
a t 1 7 9 6 pr eliminary product information 1 5 0 k h z , 3 a s t e p - d o w n s w i t c h i n g r e g u l a t o r 7f , no.9, p a rk a venue ii, sc ienc e-b a s e d indu s t rial park , hs inc hu 300,t a iwan, r.o.c. t e l: 886-3 - 56 3-0 878 fax: 886-3 - 5 63-087 9 www : h ttp ://www .ai m tro n . co m . t w 2 / 1 5 / 2 0 0 6 r e v : 1 . 1 e m a i l : service@ai mtron.c o m . tw reflow pr ofiles sn-pb eutectic assembl y pb-free assembl y profile featu r e large bod y pkg. thickne ss 2.5mm or pkg. vo l u m e 3 50mm 3 small bod y pkg. thickne ss <2.5mm or pkg. v o lume < 350mm 3 large bod y pkg. thickne ss 2.5mm or pkg. vo l u m e 3 50mm 3 small bod y pkg. thickne ss 2.5mm or pkg. vo l u m e 3 50mm 3 a v erage ram p -u p rate (t l to t p ) 3 c/ se con d max . 3 c/ se con d max . prehe at -t empe rature min(t s min) -t empe ratur e max (t sma x ) -t ime (mi n to max )(t s) 100 c 150 c 60-120 se con d s 150 c 200 c 60-180 se con d s ts m a x t o t l -ram p-up rate 3 c/ se con d max . t i me maint a i ned ab ove: -t empe ratur e (t l ) -t ime (t l ) 183 c 60-150 se con d s 217 c 60-150 se con d s peak t e mp erature ( t p ) 225 +0/-5 c 2 4 0 +0/-5 c 2 4 5 +0/-5 c 2 5 0 +0/-5 c ti m e w i t h i n 5 c of a c tual pea k t e mperature (t p ) 10-30 second s 10-30 second s 10-30 second s 20-40 second s ram p -d own rate 6 c/ se con d max . 3 c/ se con d max . ti m e 2 5 c to peak t e mperature 6 minute s ma x. 8 minute s ma x. * a ll te mpe r a t ure s re fe r to top s ide of t h e p a c k a g e , me asure d on t h e p a c k a g e body s u rfa c e . 12
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