rohs device page 1 rev : a mechanical data - case: sot -23, molded plastic. - t erminals: solderable per mil-std-750, method 2026. CJ431K-HF absolute maximum ratings d i m e n s i o n s i n i n c h e s a n d ( m i l l i m e t e r ) qw -jka01 comchip t echnology co., l td. cathode voltage cathode current range (continuous) reference input current range thermal resistance from junction to ambient operating ambient temperature range storage temperature range unit symbol parameter v ka i ka i ref r ja t j t opr t stg 3 1 2 0.1 18(3.00) 0.1 10(2.80) 0.055(1.40) 0.047(1.20) 0.079(2.00) 0.071(1.80) 0.045(1.15) 0.035(0.90) 0.020(0.50) 0.012(0.30) 0.006(0.15) 0.003(0.08) 0.100(2.55) 0.089(2.25) v alue 37 -100~+150 0.05~+10 417 150 -40~+85 -65~+150 v ma ma c/w c c c operating junction temperature halogen free power dissipation p d 300 mw company reserves the right to improve product design , functions and reliability without notice. (operating temperature range applies unless otherwise specified) circuit diagram cathode ( k ) anode reference ( r ) ( a ) features - the output voltage can be adjusted to 36v . - t rapping current capability is 1 to 100ma - fast on-state response - low output noise voltage - the typical value of the equivalent temperature factor in the whole temperature scope is 50 ppm/?c - low dynamic output impedance, its typical value is 0.2? encapsulate adjustable reference source - the ef fective temperature compensation in the working range of full temperature 2. cathode 3. anode 1. reference sot -23 0.020(0.50) 0.012(0.30)
electrical characteristics ( t a=25c unless otherwise specified ) parameter conditions t yp. max . unit i ka 10ma = min. of f - state cathode current ( fig.3) dynamic impedance 4.5 v -2.7 0.5 0.15 v mv/v l ka = = 10ma, r 1 10 k r 2 = 4 1.5 a reference input current ( ig.2) f l ka 10ma, r 1 = 10 k = r 2 = t a full t emperature = 1.2 v ka v ref = regulation (fig.1) minimum cathode current for 0.45 0.4 ma a 1.0 v ka v ref , i ka 10ma = = tmin t a tmax deviation of reference input voltage over temperature ( note ) ( ig .1) f 17 mv reference input voltage ( ig.1) f ratio of change in reference input voltage to the change in cathode voltage ( ig.2) f deviation of reference input current over full temperature range ( ig.2) f v ka v ref , i ka 10ma = = symbol v ref / t / v ref v ka i ka(off) z ka l ref i ka(min) l ref t / v ref = 10v v ka ~v ref = 36v~ v ka 10v v ka 40v , v ref 0 = = a v ka = , = v ref l ka 1 to 100 ma f 1.0khz 2.470 2.520 -1.0 -2.0 -0.5 mv/v 0.05 0.5 note: t min = 0c, t max = +70c range rank 2.482 - 2.508 1% 2.47 - 2.52 0.5% classification of v ref page 2 rev : a comchip t echnology co., l td. company reserves the right to improve product design , functions and reliability without notice. encapsulate adjustable reference source fig.1 - t est circuit for v ka = v ref v ka i k fig.2 - t est circuit v ka > v ref for fig.3 - t est circuit i of f for v ref lnput v ka lnput l ref i k v ref r 1 r 2 v ka lnput i of f v ka = ( l ref ? r1 v ref 1+r1/r2)+ qw -jka01
ra ting and characteristic cur ves (CJ431K-HF) c a t h o d e c u r r e n t , ( a ) i k cathode v oltage, v ka (v) - 1 0 1 2 - 2 0 0 2 0 0 6 0 0 8 0 0 0 4 0 0 3 v ka =v ref t a= 25 c cathode current v ersus cathode v oltage r e f e r e n c e i n p u t v o l t a g e , ( m v ) v r e f ambient t emperature, t a (c) - 4 0 - 2 0 0 2 0 2 3 5 0 2 4 5 0 2 5 5 0 2 6 0 0 2 4 0 0 2 5 0 0 1 0 0 v ka =v ref reference input v oltage v ersus ambient t emperature 4 0 6 0 8 0 i k =1 0m a c a t h o d e c u r r e n t , i k ( m a ) cathode v oltage, (v) v ka - 2 - 1 0 1 - 1 0 0 0 1 0 0 1 5 0 - 5 0 5 0 2 3 v ka =v ref t a= 25 c cathode current versus cathode v oltage page 3 rev : a comchip t echnology co., l td. company reserves the right to improve product design , functions and reliability without notice. encapsulate adjustable reference source v ka i ka v ref lnput t est circuit for v ka = v ref i ka (mi n) qw -jka01
40 35 i k = 10 m a t a =2 5 c r e f e r e n c e i n p u t c u r r e n t , ( a ) -40 0 20 60 0. 0 1 .0 2 .5 3. 0 0. 5 1. 5 100 ambient t emperature 2 .0 -20 40 80 ambient t emperature, t a (?c) reference input current v ersus i k =1 0m a r 1 =1 0k ? -40 -20 0 20 100 40 60 80 0 1 0 30 40 20 o f f - s t a t e c a t h o d e c u r r e n t , ( n a ) i o f f of f-state cathode current v ersus ambient t emperature v ka =3 6v v ref =0 v r e f e r e n c e i n p u t v o l t a g e , ( m v ) v r e f 0 5 10 20 -2 0 -1 2 -4 0 -1 6 -8 25 30 15 change in reference input v oltage v ersus cathode v oltage page 4 rev : a comchip t echnology co., l td. company reserves the right to improve product design , functions and reliability without notice. encapsulate adjustable reference source cathode v oltage, (v) v ka ambient t emperature, t a (?c) ra ting and characteristic cur ves (CJ431K-HF) t est circuit i of f for lnput v ka i of f i ref r 1 lnput v ka i ka v ref t est circuit i ref for t est circuit for v ka = ( l ref ? r1 v ref 1+r1/r2)+ lnput v ka i ka r 1 r 2 v ref l ref qw -jka01
page 5 rev : a comchip t echnology co., l td. company reserves the right to improve product design , functions and reliability without notice. encapsulate adjustable reference source reel t aping specification d f e b p 1 p 0 p a w b c d d d 2 d 1 s o t - 2 3 s y m b o l ( m m ) ( i n c h ) 2 . 1 4 2 0 . 0 3 9 4 . 0 0 0 . 1 0 1 . 5 0 + 0 . 1 0 5 4 . 4 0 1 . 0 1 3 . 0 0 1 . 0 4 . 0 0 0 . 1 0 2 . 0 0 0 . 1 0 1 7 8 2 . 0 0 . 0 5 9 0 . 0 0 4 + 7 . 0 0 8 0 . 0 7 9 0 . 5 1 2 0 . 0 3 9 s y m b o l ( m m ) ( i n c h ) 0 . 0 . 0 0 4 1 5 8 0 . 1 5 8 0 . 0 0 4 0 . 0 7 9 0 . 0 0 4 e f p p 0 p 1 w w 1 1 . 7 5 0 . 1 0 0 . 0 6 9 0 . 0 0 4 3 . 5 0 0 . 1 0 0 . 1 3 8 0 . 0 0 4 s o t - 2 3 3 . 1 5 0 . 1 0 0 . 1 2 4 0 . 0 0 4 2 . 7 7 0 . 1 0 0 . 1 0 9 0 . 0 0 4 1 . 2 2 0 . 1 0 0 . 0 4 8 0 . 0 0 4 9 . 5 0 1 . 0 0 0 . 3 7 4 0 . 0 3 9 8 . 0 0 0 . 3 0 / + C 0 . 1 0 0 . 3 1 5 0 . 0 1 2 / + C 0 . 0 0 4 a qw -jka01
page 6 rev : a comchip t echnology co., l td. company reserves the right to improve product design , functions and reliability without notice. encapsulate adjustable reference source marking code part number marking code 431k 3 1 2 suggested p ad layout a d c size (inch) 0.031 (mm) 0.80 0.60 1.90 0.024 0.075 sot -23 2.02 0.080 a b c d b 431k standard packaging c a s e t y p e s o t - 2 3 3 , 0 0 0 r e e l ( p c s ) reel size (inch) 7 r e e l p a c k CJ431K-HF 1.general tolerance: 0.05mm. 2.the pad layout is for reference purposes only . note: solid dot = halogen free qw -jka01
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