FP130A rail current measurement ic this da t asheet con t ains new produ ct informa t ion. feeli ng t e chn o logy reserv es the ri ght s to modify the produ ct spe c ifi c a t ion w i thout n o ti ce . no liabili ty is as su med as a re sult o f t he u s e o f thi s prod uct. no righ t s unde r any p a tent a c comp any the sale s o f the produ ct. w ebsite: http://www .fe eling-tech.com.t w rev. 0.9 1/10 general description the FP130A is a wide com m on mode ra nge high sid e ra il current measure m ent ic. it is suitable for po we r sy stems li ke b a ttery charger o r switchi ng p o we r supply appli c ation s . it includ es a d i fferential input amplifie r and a n np n tran si stor with emitter o u t put. with three external resi stors, the rail curre n t sign al ca n be easily converted into an a m plified volta ge sig nal at t he ic outp u t pin. also, the gain can be adju s ted b y changi ng th e three external re sisto r s values. features ? indepe nde nt powe r suppl y v o lt age: 2.7 to 28v ? wide inp u t common - mo d e v o lt age: 2.7 to 28v ? sourc e current emitter output ? thre e re si stors gain set-up ? wide t e mp erature rang e: -20 to + 1 25 ? package: so t23-5l applications ? battery charger ? high side rai l current detector ? sps (adaptor) ? curre n t sense networking system ty pical application circuit v ip load rg1 rg2 rs is rl v in +v in - io v ip v in gnd ou t v cc http://
FP130A this da t asheet con t ains new produ ct informa t ion. feeli ng t e chn o logy reserv es the ri ght s to modify the produ ct spe c ifi c a t ion w i thout n o ti ce . no liabili ty is a s su med as a re sult o f t he u s e o f thi s prod uct. no righ t s unde r any p a tent a c comp any the sale s o f the produ ct. w ebsite: http://www .fe eling-tech.com.t w rev. 0.9 2/10 function block diagram v cc v ip v in gnd out pin desc riptions sot23-5l 1 2 3 5 4 v in v cc out gn d v ip fc915 top view nam e no. i / o description out 1 o current detect output gnd 2 p ic ground v ip 3 i positive input of differential opa v in 4 i negative input of differential opa v cc 5 p ic power supply
FP130A this da t asheet con t ains new produ ct informa t ion. feeli ng t e chn o logy reserv es the ri ght s to modify the produ ct spe c ifi c a t ion w i thout n o ti ce . no liabili ty is a s su med as a re sult o f t he u s e o f thi s prod uct. no righ t s unde r any p a tent a c comp any the sale s o f the produ ct. w ebsite: http://www .fe eling-tech.com.t w rev. 0.9 3/10 ic date code identificatio n sot23-5l lot numbe r : w a fer lot numb e r ? s last t w o di git s for e x ample: 13 2386tb ? 86 y ea r : prod ucti on year ? s l a st d i git internal id : interna l identific ation c ode part number code : part number id entificat ion co de for thi s product. it shoul d be a l w a ys ?f?.
FP130A this da t asheet con t ains new produ ct informa t ion. feeli ng t e chn o logy reserv es the ri ght s to modify the produ ct spe c ifi c a t ion w i thout n o ti ce . no liabili ty is a s su med as a re sult o f t he u s e o f thi s prod uct. no righ t s unde r any p a tent a c comp any the sale s o f the produ ct. w ebsite: http://www .fe eling-tech.com.t w rev. 0.9 4/10 ordering information part number operating temperature package moq description f p 130akr-g1 -20 c ~ + 125 c sot 23-5l 250 0ea t ape & reel absolute maximum ratings parameter sy mbol conditions min. typ. max. unit supp l y v o lt ag e v cc -0.3 28 v common m o d e input s v o lt ag e v i -0.3 28 v dif ferenti a l inp u t s v o lt age (v ip ? v in ) -30 1.5 v out v o lt age -0.3 28 v operatin g t e mperat ur e -20 + 125 c s t orage t e mpe r ature -55 + 150 c junctio n t e mperature t j + 150 c al l o w abl e po w e r d i ssi p a ti on t a =2 5 c 220 mw junctio n to ambie n t t hermal resist anc e ja + 250 c / w junctio n to ca se t hermal re sist ance jc + 150 c / w sot 25 lea d t e mper ature (so l deri ng, 10 sec) + 260 c ir re-flow soldering curve
FP130A this da t asheet con t ains new produ ct informa t ion. feeli ng t e chn o logy reserv es the ri ght s to modify the produ ct spe c ifi c a t ion w i thout n o ti ce . no liabili ty is a s su med as a re sult o f t he u s e o f thi s prod uct. no righ t s unde r any p a tent a c comp any the sale s o f the produ ct. w ebsite: http://www .fe eling-tech.com.t w rev. 0.9 5/10 recommended operating conditions parameter symbol conditions min. typ. max. unit supp l y v o lt ag e v cc 2.7 28 v operatin g t e mperatur e -20 + 125 c dc electrical characteristics (v cc =5v , v in + =12v , r ou t =1 25k , t a = -2 0 c ~12 5 c , unless othe rwi s e note d ) parameter symbol conditions min. typ. max. unit full scale sense voltage v sense v sense =v in + v in - 100 500 mv common-m o d e input v o lt ag e v cm 2.7 28 v common-mode rejection cmrr v in + =2.7v to 28v , v sen se = 50mv 100 120 db input offset voltage vs temp v offset(ta) t min to t max 4 v / input offset voltage vs v cc v offset(vcc) v cc =2.7v to 28v , v sen se = 50mv 2.5 10 v/v input bias current i bias v ip ,v in 2 a non-l i n earit y e rror nle v sen se = 10mv to 150mv 1 % t o t a l output er ror t o e v sen se = 100mv 2 % output impeda nce r out 1 ||5 g ? ||pf v o lt age s w i n g to v cc v sc c v cc -0.8 v v o lt age s w i n g to v cm v sc m v cm -0.5 v band w i d t h bw r out = 125k ? 32 khz settling t i me t s 5v s t ep, r out =125k 30 s total output-current noise i noise bw=100khz 3 na operatin g v o lt age r a n ge v cc 2.7 28 v quiescent current i cc v sense =0, vcc=28v 400 a
FP130A this da t asheet con t ains new produ ct informa t ion. feeli ng t e chn o logy reserv es the ri ght s to modify the produ ct spe c ifi c a t ion w i thout n o ti ce . no liabili ty is a s su med as a re sult o f t he u s e o f thi s prod uct. no righ t s unde r any p a tent a c comp any the sale s o f the produ ct. w ebsite: http://www .fe eling-tech.com.t w rev. 0.9 6/10 t y pical operating characteristics (v cc =5v , v in =12v , t a =25 c , unless otherwise noted ) t o t a l o u t p ut error v s vcc vcc (v) 0 5 10 15 20 25 3 0 35 total output error (%) -2 -1 0 1 2 o u tpu t er ro r i s ess en ti aly i n de pe nd en t of v c c g=1, 10 , 25 to t a l out p ut erro r vs vs e n s e volt age vs ense voltage (mv) 0 2 0 4 0 6 0 80 10 0 120 140 160 t otal output error (%) -4 -2 0 2 4 vcc=5 v vi n= 1 2 v 85 c 25 c quiescen t c u r r en t vs vcc vcc (v) 0 5 10 15 20 25 3 0 qui escent cu rrent (ua) 0 100 20 0 30 0 40 0 50 0 60 0 25 c 85 c -2 5 c t ota l out p ut erro r vs vs e n s e vol t ag e vs ense vo ltag e (mv) 0 20 4 0 60 80 1 00 12 0 140 160 to ta l output error (%) -4 -2 0 2 4 25 c vcc= 30 v v i n = 30v 85 c
FP130A this da t asheet con t ains new produ ct informa t ion. feeli ng t e chn o logy reserv es the ri ght s to modify the produ ct spe c ifi c a t ion w i thout n o ti ce . no liabili ty is a s su med as a re sult o f t he u s e o f thi s prod uct. no righ t s unde r any p a tent a c comp any the sale s o f the produ ct. w ebsite: http://www .fe eling-tech.com.t w rev. 0.9 7/10 v out ( rg1=rg2=1k ? ) g=1 g=1 v ou t (rg1= r g2=5k ? ) g=1 g=1 g=10 g=25 g=10 g=25
FP130A this da t asheet con t ains new produ ct informa t ion. feeli ng t e chn o logy reserv es the ri ght s to modify the produ ct spe c ifi c a t ion w i thout n o ti ce . no liabili ty is a s su med as a re sult o f t he u s e o f thi s prod uct. no righ t s unde r any p a tent a c comp any the sale s o f the produ ct. w ebsite: http://www .fe eling-tech.com.t w rev. 0.9 8/10 function description figure 1 sh o w s the fp 130 a basi c appli c ation ci rcuit, the load cu rre nt (i s ) flows from po wer su pply and gene rat e s a voltage difference (v in + -v in - ) at the sense re sisto r (r s ). a ssu me int e r nal np n transi s to r coll ector cu rr ent is sa me a s e m itter cu rre nt (i o ) and v ip i s v e r y c l o s e v in , the FP130A transfe r function i s : -- -- - (1 ) in the circuit of figure 1, the (v in + -v in - ), is eq ual to i s x r s and the o u tput voltage (o ut) i s eq u a l to i o x r l . the final tran sfer fu nction for rail curr e n t measurem ent in this appli c atio n is: s s out r i g v ? ? ? --- -- ( 2 ) 1 rg r g l ? ----- ( 3 ) v in v ip load v cc ou t gn d rg 1 rg 2 rs is rl v in +v in - io figure 1 cur rent me asur e ment cir c ui t note: 1. the minim u m ope rating voltages of v cc , v ip and v in are 2.7v. if these su pply voltages are lowe r than 2. 7v, the transf e r functio n at output of FP130A is no lon ger ap plicabl e. 2. do not fo rce a v in voltage larg er tha n v ip +15v. th is condition woul d gen erate a lea k ag e curre n t and a n inco rrect vo ltage at fp13 0a output. 1 rg v v i in in o ? ? ? ?
FP130A this da t asheet con t ains new produ ct informa t ion. feeli ng t e chn o logy reserv es the ri ght s to modify the produ ct spe c ifi c a t ion w i thout n o ti ce . no liabili ty is a s su med as a re sult o f t he u s e o f thi s prod uct. no righ t s unde r any p a tent a c comp any the sale s o f the produ ct. w ebsite: http://www .fe eling-tech.com.t w rev. 0.9 9/10 fp1 30a 3 4 1 r c f - 3db f -3db = 1 rc 2 rg1 r g2 rs figure 2 sho w s a si mple method to d e lay the conve r ting ti me. whe n a tran sient volt age happ en s at sen s e re si stor (r s ), the ic woul d cha nge so urcing cu rrent (i o ) to the o u tput and gene rate a volt age chang e at the output. the r c circuit will del ay a time duri ng output cha nge. figure 2 ou tput r-c dela y c i rcuit f p 1 30a 3 4 1 r v re f v cc rg 1 r g2 rs v ou t r1 figure 3 sh o w s a dete c tion ci rcuit usi ng 1.25v r e fe re nc e regu la to r a n d c o mp ar a t or . at initial, the non-i n ve rting input of the com p a r ator whi c h is co nne cted to the 1.25v regul ator i s highe r than inverting inp u t. the com p a r ator ? s output sign a l is hi gh. on ce the ic output volt a ge is high er tha n 1. 25v , the com p a r ator ? s output will ch ange to lo w . figure 3 co mp arator de tec t ion circu i t
FP130A this da t asheet con t ains new produ ct informa t ion. feeli ng t e chn o logy reserv es the ri ght s to modify the produ ct spe c ifi c a t ion w i thout n o ti ce . no liabili ty is a s su med as a re sult o f t he u s e o f thi s prod uct. no righ t s unde r any p a tent a c comp any the sale s o f the produ ct. w ebsite: http://www .fe eling-tech.com.t w rev. 0.9 10/10 package outline sot23-5l unit : m m note: 1. package di m ensi o n s are i n compli an ce with jede c outline: mo-1 78 aa. 2. dimen s io n ?d? doe s not include moldi ng flash, prot ru si ons o r gate b u rrs. 3. dimen s io n ?e 1? doe s not in clud e inter-le ad flash o r protrusi on s. sy mbols min. (mm) max.(mm) a 1.050 1.350 a1 0.050 0.150 a2 1.000 1.200 b 0.250 0.500 c 0.080 0.200 d 2.700 3.000 e 2.600 3.000 e1 1.500 1.700 e 0.950 bsc e1 1.900 bsc l 0.300 0.550 l1 0.600 ref l2 0.250 bsc 0 10 1 3 7 2 6 10
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