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gc3-o026 page 1 application manual 150ma, capacitor-less, low i q , cmos ldo regulator ic tk637xxab6 contents 1 . description 2 2 . features 2 3 . applications 2 4 . pin configuration 2 5 . block diagram 2 6 . ordering information 3 7 . absolute maximum ratings 4 8 . electrical characteristics 5 9 . test circuit 8 10 . typical characteristics 10 11 . pin description 25 12 . applications information 26 13 . package outline 32 14 . notes 33 15. offices 33
tk637xxab6 gc3-o026 page 2 150ma, capacitor-less, low i q , cmos ldo regulator tk637xxab6 1. description the tk637xxab6 is a cmos ldo regulator. the packages are the very small 4-bump flip chip. the ic is designed for portable applications with space requirements. the ic can supply 150ma output current. the ic does not require input capacitor, output capacitor, and noise-bypass capacitor. the ic offers low 10a quiescent current, and good transient performance. the output voltage is internally fixed from 1.35v to 4.2v. 2. features ? capacitor-less (without input capacitor, output capacitor, and noise- bypass capacitor) ? package: fc-4 ? low quiescent current ? good transient performance ? thermal and over current protection ? on/off control ? high accuracy 3. applications ? mobile communication ? battery powered system ? any electronic equipment 4. pin configuration ? fc-4 (tk637xxab6) (top view) a1 a2 b1 b2 gnd v cont v in v out a1 mark m reference mount pad 4- 0.275 0.96 0.96 a 1 2 b mark 0.60 0.22 4- 0.30 0.05 a1 pin mark 0.03 0.5 0.5 0.5 0.5 0.05 lot no. 0.03 0.03 0.06 0.03 5. block diagram v in gnd v cont v out on/off control v ref thermal & over current protection
tk637xxab6 gc3-o026 page 3 6. ordering information voltage code (refer to the following table) package code b6 : fc-4 tape/reel code b : normal type for fc environment code gh : lead free + halogen free t k 6 3 7 g a operating temp. range code c : c rank(standard) hb - c b6 output voltage voltage code output voltage voltage code output voltage voltage code 1.35v 02 2.8v 28 3.3v 33 1.5v 15 2.85v 01 3.5v 35 1.8v 18 2.9v 29 2.5v 25 3.0v 30 2.6v 26 3.1v 31 2.7v 27 3.2v 32 *if you need a voltage other than the value listed in the above table, please contact toko.
tk637xxab6 gc3-o026 page 4 7. absolute maximum ratings t a =25 c parameter symbol rati ng units conditions absolute maximum ratings input voltage v in,max -0.3 ~ 7.0 v output pin voltage v out,max -0.3 ~ v in +0.3 v control pin voltage v cont,max -0.3 ~ 7.0 v storage temperature range t stg -55 ~ 150 c power dissipation p d 360 mw when mounted on a pcb (7mm 8mm 0.8mm) , internal limited t j =150c * operating condition operational temperature range t op -40 ~ 85 c operational voltage range v op 1.8 ~ 6.0 v *1 p d must be decreased at the rate of 2.9mw for operation above 25 c. the maximum ratings are the absolute limitation values with the possibility of the ic being damaged. if the operation exceeds any of these st andards, quality cannot be guaranteed.
tk637xxab6 gc3-o026 page 5 8. electrical characteristics the parameters with min. or max. values will be guaranteed at t a =t j =25 c with test when manufacturing or sqc (statistical quality control) methods. the operation between -40 ~ 85 c is guaranteed by design. v in =v out,typ +1v, v cont =1.2v, t a =t j =25c value parameter symbol min typ max units conditions output voltage v out refer to table 1 v i out =5ma line regulation linreg - 0.0 4.0 mv ? v in =1v load regulation loareg refer to table 2 mv refer to table 2 dropout voltage *1 v drop refer to table 2 mv refer to table 2 maximum load current *2 i out,max 200 300 - ma v out =v out,typ 0.9 quiescent current i q - 10 20 a i out =0ma, v cont =v in standby current i standby - 0.01 0.1 a v cont =0v gnd pin current i gnd - 25 50 a i out =50ma, v cont =v in control terminal control current i cont - 0.3 0.6 a v cont =1.2v 1.2 - - v v out on state control voltage v cont - - 0.2 v v out off state reference value output voltage / temp. ? v out / ? t a - 100 - ppm/c i out =5ma output noise voltage (tk63728ab6) v noise - 45 - vrms c out =1.0 f , i out =30ma , bpf=400hz~80khz ripple rejection (tk63728ab6) rr - 65 - db c out =1.0 f , i out =10ma , f=1khz rise time (tk63728ab6) t r - 300 - s c out =1.0 f , v cont : pulse wave (100hz) , v cont on v out 95% point *1 : for v out 1.8v, no regulations. *2 : the maximum output current is limited by power dissipation. the maximum load current is the current where the output volt age decreases to 90% by increasing the output current at t j =25c, compared to the output voltage specified at v in =v out,typ +1v. the maximum load current indicates the current at which over current protection turns on. for all output voltage products, the maximum output current for normal operation without operating any protection is 200ma. accordingly, loareg and v drop are specified on the condition that i out is less than 200ma. general note parameters with only typical values are just reference. (not guaranteed) the noise level is dependent on the output voltage , the capacitance and capacitor characteristics.
tk637xxab6 gc3-o026 page 6 table 1 . output voltage min typ max part number v v v tk63702ab6 1.335 1.350 1.365 tk63715ab6 1.485 1.500 1.515 tk63718ab6 1.782 1.800 1.818 tk63725ab6 2.475 2.500 2.525 tk63726ab6 2.574 2.600 2.626 tk63727ab6 2.673 2.700 2.727 tk63728ab6 2.772 2.800 2.828 tk63701ab6 2.821 2.850 2.879 tk63729ab6 2.871 2.900 2.929 tk63730ab6 2.970 3.000 3.030 tk63731ab6 3.069 3.100 3.131 tk63732ab6 3.168 3.200 3.232 tk63733ab6 3.267 3.300 3.333 tk63735ab6 3.465 3.500 3.535 notice. please contact your authorized toko re presentative for voltage availability .
tk637xxab6 gc3-o026 page 7 table 2 . load regulation dropout voltage i out =1 ~ 50ma i out =1 ~ 100ma i out =1 ~ 150ma i out =50ma i out =100ma i out =150ma typ max typ max typ max typ max typ max typ max part number mv mv mv mv mv mv mv mv mv mv mv mv tk63702ab6 4 16 7 28 10 40 240 - 480 - 720 - tk63715ab6 4 16 7 28 11 44 180 - 350 - 530 - tk63718ab6 4 16 8 32 12 48 130 - 255 - 375 - tk63725ab6 6 24 10 40 15 60 95 145 185 285 280 425 tk63726ab6 6 24 11 44 16 64 90 140 180 275 270 410 tk63727ab6 6 24 11 44 16 64 90 135 175 265 260 395 tk63728ab6 6 24 11 44 17 68 85 130 165 255 250 380 tk63701ab6 6 24 11 44 17 68 85 125 165 250 245 375 tk63729ab6 6 24 11 44 17 68 80 125 160 245 240 370 tk63730ab6 6 24 12 48 18 72 80 125 160 245 240 370 tk63731ab6 7 28 12 48 18 72 80 125 160 245 240 370 tk63732ab6 7 28 12 48 19 76 80 125 160 245 240 370 tk63733ab6 7 28 13 52 19 76 80 125 160 245 240 370 tk63735ab6 7 28 13 52 20 80 80 125 160 245 240 370
tk637xxab6 gc3-o026 page 8 9. test circuit i out =5ma c out =1.0uf c in =1.0uf v cont v _ a _ i cont v out v in = v out,typ +1.0v a _ v in v out v cont gnd i in ? test circuit for electrical characteristic notice. the limit values of the electrical characteristics are determined when c in =1.0 f(ceramic) and c out =1.0 f(ceramic). but ceramic and/or tantalum capacitors can both be used for c in , and c out . this ic does not oscillate with out input and output capacitors. the electrical characteristics without input and output capacitors are guaranteed by design., please refe r to 12-1 for external capacitor. i out c out =1.0uf c in =1.0uf v cont v _ a _ i cont v out v in v in v out v cont gnd ? ? v out vs v in ? v drop vs i out ? v out vs i out ? ? v out vs i out ? ? v out vs t a ? v drop vs t a ? i out,max vs t a ? i cont vs v cont , v out vs v cont ? i cont vs t a ? v cont vs t a ? v noise vs v in ? v noise vs i out ? v noise vs v out ? v noise vs frequency c out =1.0uf c in =1.0uf v cont a _ i cont v in = v out,typ +1.0v a _ v in v out v cont gnd i in open ? i q vs v in ? i standby vs v in ? i q vs t a i out c out =1.0uf c in =1.0uf v cont v in = v out,typ +1.0v v in v out v cont gnd a _ i gnd a _ i cont ? i gnd vs i out ? i gnd vs t a
tk637xxab6 gc3-o026 page 9 i out =10ma c out =1.0uf v in v out v cont gnd v in = v out,typ +1.5v v ripple = 500mv p-p v cont =1.2v ? rr vs v in ? rr vs frequency ? rr vs frequency c out =1.0uf v _ v out v in v out v cont gnd v out,typ +1v v out,typ +2v v cont =1.2v i out ? line transient c out =1.0uf c in =1.0uf v _ v out v in = v out,typ +1.0v v in v out v cont gnd i out v cont =1.2v ? load transient i out = 30ma c out =1.0uf c in =1.0uf v _ v out v in = v out,typ +1.0v v in v out v cont gnd v cont =0v 1.2v ? on/off transient
tk637xxab6 gc3-o026 page 10 10. typical characteristics 10-1. dc characteristics ? ? v out vs v in (tk63715ab6) v in [v] 0123456 ? v out [mv] -30 -25 -20 -15 -10 -5 0 5 10 i out =5ma ? ? v out vs v in (tk63728ab6) v in [v] 0123456 ? v out [mv] -30 -25 -20 -15 -10 -5 0 5 10 i out =5ma ? ? v out vs v in (tk63742ab6) v in [v] 0123456 ? v out [mv] -30 -25 -20 -15 -10 -5 0 5 10 i out =5ma ? ? v out vs v in (tk63715ab6) v in -v out [mv] -100 0 100 200 300 ? v out [mv] -100 -80 -60 -40 -20 0 20 40 i out =0, 10, 30, 50, 80ma ? ? v out vs v in (tk63728ab6) v in -v out [mv] -100 0 100 200 300 ? v out [mv] -100 -80 -60 -40 -20 0 20 40 i out =0, 10, 30, 50, 80ma ? ? v out vs v in (tk63742ab6) v in -v out [mv] -100 0 100 200 300 ? v out [mv] -100 -80 -60 -40 -20 0 20 40 i out =0, 10, 30, 50, 80ma
tk637xxab6 gc3-o026 page 11 ? v drop vs i out (tk63715ab6) i out [ma] 0 50 100 150 200 v drop [mv] -400 -350 -300 -250 -200 -150 -100 -50 0 ? v drop vs i out (tk63728ab6) i out [ma] 0 50 100 150 200 v drop [mv] -400 -350 -300 -250 -200 -150 -100 -50 0 ? v drop vs i out (tk63742ab6) i out [ma] 0 50 100 150 200 v drop [mv] -400 -350 -300 -250 -200 -150 -100 -50 0 ? v out vs i out (tk63715ab6) i out [ma] 0 100 200 300 400 500 v out [v] 0 0.5 1 1.5 2 ? v out vs i out (tk63728ab6) i out [ma] 0 100 200 300 400 500 v out [v] 0 0.5 1 1.5 2 2.5 3 3.5 4 ? v out vs i out (tk63742ab6) i out [ma] 0 100 200 300 400 500 v out [v] 0 1 2 3 4 5 6
tk637xxab6 gc3-o026 page 12 ? ? v out vs i out (tk63715ab6) i out [ma] 0 50 100 150 200 ? v out [mv] -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 ? ? v out vs i out (tk63728ab6) i out [ma] 0 50 100 150 200 ? v out [mv] -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 ? ? v out vs i out (tk63742ab6) i out [ma] 0 50 100 150 200 ? v out [mv] -40 -35 -30 -25 -20 -15 -10 -5 0 5 10 ? ? v out vs t a (tk63715ab6) t a [c] -50 -25 0 25 50 75 100 ? v out [mv] -100 -80 -60 -40 -20 0 20 40 60 80 100 ? ? v out vs t a (tk63728ab6) t a [c] -50 -25 0 25 50 75 100 ? v out [mv] -100 -80 -60 -40 -20 0 20 40 60 80 100 ? ? v out vs t a (tk63742ab6) t a [c] -50 -25 0 25 50 75 100 ? v out [mv] -100 -80 -60 -40 -20 0 20 40 60 80 100
tk637xxab6 gc3-o026 page 13 ? v drop vs t a (tk63715ab6) t a [c] -50 -25 0 25 50 75 100 v drop [mv] -400 -350 -300 -250 -200 -150 -100 -50 0 i out =50ma i out =80ma ? v drop vs t a (tk63728ab6) t a [c] -50 -25 0 25 50 75 100 v drop [mv] -400 -350 -300 -250 -200 -150 -100 -50 0 i out =50ma i out =80ma ? v drop vs t a (tk63742ab6) t a [c] -50 -25 0 25 50 75 100 v drop [mv] -400 -350 -300 -250 -200 -150 -100 -50 0 i out =50ma i out =80ma ? i out,max vs t a (tk63715ab6) t a [c] -50 -25 0 25 50 75 100 i out,max [ma] 200 300 400 ? i out,max vs t a (tk63728ab6) t a [c] -50 -25 0 25 50 75 100 i out,max [ma] 200 300 400 ? i out,max vs t a (tk63742ab6) t a [c] -50 -25 0 25 50 75 100 i out,max [ma] 200 300 400
tk637xxab6 gc3-o026 page 14 ? i q vs v in (tk63715ab6) v in [v] 0123456 i q [ a] 0 2 4 6 8 10 12 14 16 18 20 v cont =v in ? i q vs v in (tk63728ab6) v in [v] 0123456 i q [ a] 0 2 4 6 8 10 12 14 16 18 20 v cont =v in ? i q vs v in (tk63742ab6) v in [v] 0123456 i q [ a] 0 2 4 6 8 10 12 14 16 18 20 v cont =v in ? i standby vs v in (tk63715ab6) v in [v] 0123456 i standby [na] 0 1 2 3 4 5 6 7 8 9 10 v cont =0v ? i standby vs v in (tk63728ab6) v in [v] 0123456 i standby [na] 0 1 2 3 4 5 6 7 8 9 10 v cont =0v ? i standby vs v in (tk63742ab6) v in [v] 0123456 i standby [na] 0 1 2 3 4 5 6 7 8 9 10 v cont =0v
tk637xxab6 gc3-o026 page 15 ? i gnd vs i out (tk63715ab6) i out [ma] 0 50 100 150 200 i gnd [ a] 0 20 40 60 80 100 v cont =v in ? i gnd vs i out (tk63728ab6) i out [ma] 0 50 100 150 200 i gnd [ a] 0 20 40 60 80 100 v cont =v in ? i gnd vs i out (tk63742ab6) i out [ma] 0 50 100 150 200 i gnd [ a] 0 20 40 60 80 100 v cont =v in ? i q vs t a (tk63715ab6) t a [c] -50 -25 0 25 50 75 100 i q [ a] 0 2 4 6 8 10 12 14 16 18 20 v cont =v in ? i q vs t a (tk63728ab6) t a [c] -50 -25 0 25 50 75 100 i q [ a] 0 2 4 6 8 10 12 14 16 18 20 v cont =v in ? i q vs t a (tk63742ab6) t a [c] -50 -25 0 25 50 75 100 i q [ a] 0 2 4 6 8 10 12 14 16 18 20 v cont =v in
tk637xxab6 gc3-o026 page 16 ? i gnd vs t a (tk63715ab6) t a [c] -50 -25 0 25 50 75 100 i gnd [ a] 0 20 40 60 80 100 v cont =v in , i out =50ma ? i gnd vs t a (tk63728ab6) t a [c] -50 -25 0 25 50 75 100 i gnd [ a] 0 20 40 60 80 100 v cont =v in , i out =50ma ? i gnd vs t a (tk63742ab6) t a [c] -50 -25 0 25 50 75 100 i gnd [ a] 0 20 40 60 80 100 v cont =v in , i out =50ma ? i cont vs v cont , v out vs v cont (tk63715ab6) v cont [v] 0 0.5 1 1.5 2 v out [v] 0 0.5 1 1.5 2 i cont [ a] 0 0.25 0.5 0.75 1 v out i cont ? i cont vs v cont , v out vs v cont (tk63728ab6) v cont [v] 0 0.5 1 1.5 2 i cont [ a] 0 0.25 0.5 0.75 1 v out [v] 0 1 2 3 4 v out i cont ? i cont vs v cont , v out vs v cont (tk63742ab6) v cont [v] 0 0.5 1 1.5 2 i cont [ a] 0 0.25 0.5 0.75 1 v out [v] 0 2 4 6 8 v out i cont
tk637xxab6 gc3-o026 page 17 ? v cont vs t a (tk63715ab6) t a [c] -50 -25 0 25 50 75 100 v cont [v] 0 0.2 0.4 0.6 0.8 1 1.2 1.4 ? v cont vs t a (tk63728ab6) t a [c] -50 -25 0 25 50 75 100 v cont [v] 0 0.2 0.4 0.6 0.8 1 1.2 1.4 ? v cont vs t a (tk63742ab6) t a [c] -50 -25 0 25 50 75 100 v cont [v] 0 0.2 0.4 0.6 0.8 1 1.2 1.4 ? i cont vs t a (tk637xxab6) t a [c] -50 -25 0 25 50 75 100 i cont [ a] 0 0.25 0.5 0.75 1 v cont =1.2v
tk637xxab6 gc3-o026 page 18 10-2. ac characteristics ? rr vs v in (tk63715ab6) v in -v out [v] 00.511.522.533.5 rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 i out =80ma 50ma 30ma 10ma v ripple =0.1v p-p , f=1khz ? rr vs v in (tk63728ab6) v in -v out [v] 00.511.522.533.5 rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 i out =80ma 50ma 30ma 10ma v ripple =0.1v p-p , f=1khz ? rr vs v in (tk63742ab6) v in -v out [v] 00.511.522.5 rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 v ripple =0.1v p-p , f=1khz i out =80ma 50ma 30ma 10ma ? rr vs frequency (tk63715ab6) frequency [hz] 100 1k 10k 100k 1m rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 c out =1.0 f(cer.) c out =1.0 f(tant.) i out =10ma ? rr vs frequency (tk63728ab6) frequency [hz] 100 1k 10k 100k 1m rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 i out =10ma c out =1.0 f(cer.) c out =1.0 f(tant.) ? rr vs frequency (tk63742ab6) frequency [hz] 100 1k 10k 100k 1m rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 i out =10ma c out =1.0 f(cer.) c out =1.0 f(tant.)
tk637xxab6 gc3-o026 page 19 ? rr vs frequency (tk63715ab6) frequency [hz] 100 1k 10k 100k rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1m c out =0.47 f 0.68 f 1.0 f i out =10ma ? rr vs frequency (tk63728ab6) frequency [hz] 100 1k 10k 100k rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1m c out =0.47 f 0.68 f 1.0 f i out =10ma ? rr vs frequency (tk63742ab6) frequency [hz] 100 1k 10k 100k rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 1m c out =0.47 f 0.68 f 1.0 f i out =10ma the ripple rejection (rr) characteristic depends on the characteristic and the capacitance value of the capacitor connected to the output side. the rr characteristic of 50khz or more varies greatly with the capacitor on the output side and pcb pattern. if necessary, please confirm stability of your design.
tk637xxab6 gc3-o026 page 20 ? v noise vs v in (tk63715ab6) v in [v] 123456 v noise [ vrms] 0 10 20 30 40 50 60 70 80 90 100 i out =30ma ? v noise vs v in (tk63728ab6) v in [v] 2.533.544.555.56 v noise [ vrms] 0 10 20 30 40 50 60 70 80 90 100 i out =30ma ? v noise vs v in (tk63742ab6) v in [v] 4 4.5 5 5.5 6 v noise [ vrms] 0 10 20 30 40 50 60 70 80 90 100 i out =30ma ? v noise vs i out (tk63715ab6) i out [ma] 0 50 100 150 200 v noise [ vrms] 0 10 20 30 40 50 60 70 80 90 100 ? v noise vs i out (tk63728ab6) i out [ma] 0 50 100 150 200 v noise [ vrms] 0 10 20 30 40 50 60 70 80 90 100 ? v noise vs i out (tk63742ab6) i out [ma] 0 50 100 150 200 v noise [ vrms] 0 10 20 30 40 50 60 70 80 90 100
tk637xxab6 gc3-o026 page 21 ? v noise vs v out,typ (tk637xxab6) v out,typ [v] 1.5 2 2.5 3 3.5 4 4.5 v noise [ vrms] 0 10 20 30 40 50 60 70 80 90 100 i out =30ma ? v noise vs frequency (tk63715ab6) frequency [hz] 10 100 1k 10k 100k 0.01 0.1 1 10 v noise [ v/ y hz] i out =10ma ? v noise vs frequency (tk63728ab6) frequency [hz] 10 100 1k 10k 100k 0.01 0.1 1 10 i out =10ma v noise [ v/ y hz] ? v noise vs frequency (tk63742ab6) frequency [hz] 10 100 1k 10k 0.01 0.1 1 10 100k v noise [ v/ y hz] i out =10ma
tk637xxab6 gc3-o026 page 22 10-3. transient characteristics ? line transient (tk63715ab6) time 20 sec/div 3.5v 2.5v i out =10ma 20mv/div i out =50ma v in v out ? line transient (tk63728ab6) time 20 sec/div 4.8v 3.8v i out =10ma v in v out 20mv/div i out =50ma ? line transient (tk63742ab6) time 20 sec/div 6.0v 5.2v i out =10ma v in v out 20mv/div i out =50ma ? load transient (i out =5 ? 80ma) (tk63715ab6) time 100 sec/div c out =1.0 f c out =0.68 f v out 100mv/div i out 80ma 5ma 100ma/div ? load transient (i out =5 ? 80ma) (tk63728ab6) time 100 sec/div c out =1.0 f c out =0.68 f v out 100mv/div i out 80ma 5ma 100ma/div ? load transient (i out =5 ? 80ma) (tk63742ab6) time 100 sec/div c out =1.0 f c out =0.68 f v out 100mv/div i out 80ma 5ma 100ma/div
tk637xxab6 gc3-o026 page 23 ? load transient (i out =5 ? 50ma) (tk63715ab6) time 100 sec/div 100mv/div 100ma/div i out v out 50ma 5ma t r =t f =2 sec t r =t f =10 sec ? load transient (i out =5 ? 50ma) (tk63728ab6) time 100 sec/div 100mv/div 100ma/div i out v out 50ma 5ma t r =t f =2 sec t r =t f =10 sec ? load transient (i out =5 ? 50ma) (tk63742ab6) 100mv/div 100ma/div i out v out time 100 sec/div 5ma 50ma t r =t f =2 sec t r =t f =10 sec time 10 sec/div 100mv/div 100ma/div i out v out 50ma 5ma t r =2 sec t r =10 sec 100mv/div 100ma/div i out v out time 10 sec/div 50ma 5ma t r =2 sec t r =10 sec time 10 sec/div 100mv/div 100ma/div i out v out 5ma 50ma t r =2 sec t r =10 sec
tk637xxab6 gc3-o026 page 24 ? on/off transient (v cont =0 1.2v) (tk63715ab6) time 10 sec/div c out =0.47 f 0.68 f 1.0 f v out v cont i in 200ma/div 0.5v/div 1v/div i out =30ma ? on/off transient (v cont =0 1.2v) (tk63728ab6) time 50 sec/div c out =0.47 f 0.68 f 1.0 f v out v cont i in 200ma/di v 1v/div 1v/div i out =30ma ? on/off transient (v cont =0 1.2v) (tk63742ab6) time 50 sec/div c out =0.47 f 0.68 f 1.0 f v out v cont i in 200ma/di v 2v/div 1v/div i out =30ma ? on/off transient (v cont =1.2 0v) (tk63715ab6) time 200 sec/div c out =0.47 f 0.68 f 1.0 f v out v cont i in 200ma/di v 0.5v/div 1v/div i out =30ma ? on/off transient (v cont =1.2 0v) (tk63728ab6) time 200 sec/div c out =0.47 f 0.68 f 1.0 f v out v cont i in 200ma/di v 1v/div 1v/div i out =30ma ? on/off transient (v cont =1.2 0v) (tk63742ab6) time 200 sec/div c out =0.47 f 0.68 f 1.0 f v out v cont i in 200ma/di v 2v/div 1v/div i out =30ma
tk637xxab6 gc3-o026 page 25 11. pin description pin no tk637xxab6 pin description internal equivalent circuit description a1 gnd gnd terminal a2 v cont v cont 5m ? esd protection control terminal v cont > 1.2v : on v cont < 0.2v : off the pull-down resistor (about 5m ? ) is built-in. b1 v out v out v in esd protection output terminal b2 v in input terminal
tk637xxab6 gc3-o026 page 26 12. applications information 12-1. external capacitor general linear regulators require input capacitor and output capacitor in order to maintain the regulator?s loop stability. the tk637xxab6 provides stable operation without input and output capacitors. refer to the following data that measured without input and output capacitors. the other electrical characteristics are equal to the electrical characteristics when using input and output capacitors. transient characteristics (influence of load deviation) improve by using output capacitor (see the ?load transient? on page 27). high frequency ripple can not be rejected without input and output capacitors. therefore, it is recommended that external input and output capacitors be used when high frequency ripple is expected. because a situation changes with each application, please confirm to operation in your design. ? test circuit (capacitor-less) i out v cont v _ v out v in v in v out v cont gnd ? rr vs frequency (tk63715ab6) frequency [hz] 100 1k 10k 100k 1m rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 i out =10ma capacitor-less ? rr vs frequency (tk63728ab6) frequency [hz] 100 1k 10k 100k 1m rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 i out =10ma capacitor-less ? rr vs frequency (tk63742ab6) frequency [hz] 100 1k 10k 100k 1m rr [db] -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 i out =10ma capacitor-less
tk637xxab6 gc3-o026 page 27 ? v noise vs i out (tk63715ab6) i out [ma] 0 50 100 150 200 v noise [ vrms] 0 10 20 30 40 50 60 70 80 90 100 capacitor-less ? v noise vs i out (tk63728ab6) i out [ma] 0 50 100 150 200 v noise [ vrms] 0 10 20 30 40 50 60 70 80 90 100 capacitor-less ? v noise vs i out (tk63742ab6) i out [ma] 0 50 100 150 200 v noise [ vrms] 0 10 20 30 40 50 60 70 80 90 100 capacitor-less load transient (i out =5 50ma) (tk63715ab6) time 10 sec/div 100mv/div 100ma/div i out v out 50ma 5ma t r =2 sec t r =10 sec capacitor-less load transient (i out =5 50ma) (tk63728ab6) time 10 sec/div 100mv/div 100ma/div i out v out 50ma 5ma t r =2 sec t r =10 sec capacitor-less load transient (i out =5 50ma) (tk63742ab6) time 10 sec/div 100mv/div 100ma/div i out v out 50ma 5ma t r =2 sec t r =10 sec capacitor-less
tk637xxab6 gc3-o026 page 28 ? on/off transient (v cont =0 1.2v) (tk63715ab6) capacitor-less time 10 sec/div v out v cont i in 200ma/div 0.5v/div 1v/div i out =30ma ? on/off transient (v cont =0 1.2v) (tk63728ab6) capacitor-less time 50 sec/div v out v cont i in 200ma/div 1v/div 1v/div i out =30ma ? on/off transient (v cont =0 1.2v) (tk63742ab6) capacitor-less time 50 sec/div v out v cont i in 200ma/div 2v/div 1v/div i out =30ma ? on/off transient (v cont =1.2 0v) (tk63715ab6) capacitor-less time 200 sec/div v out v cont i in 200ma/div 0.5v/div 1v/div i out =30ma ? on/off transient (v cont =1.2 0v) (tk63728ab6) capacitor-less time 200 sec/div v out v cont i in 200ma/div 1v/div 1v/div i out =30ma ? on/off transient (v cont =1.2 0v) (tk63742ab6) capacitor-less time 200 sec/div v out v cont i in 200ma/div 2v/div 1v/div i out =30ma
tk637xxab6 gc3-o026 page 29 12-2. layout fig12-1: layout example gnd v cont v in v out gnd gnd (top view) 1 pcb material : glass epoxy size : 7mm 8mm0.8mm please do derating with 2.9mw/ c at pd=360mw. fig12-2: derating curve 25 50 100 150c pd(mw) 360 (85c) -2.9mw/c the package loss is limited at the temperature that the internal temperature sensor works (about 150 c). therefore, the package loss is assumed to be an internal limitation. there is no heat radiation characteristic of the package unit assumed because of its small size. heat is carried away from the device by being mounted on the pcb. this value is directly effected by the material and the copper pattern etc. of the pcb. the losses are approximately 360mw. enduring these losses becomes possible in a lot of applications operating at 25 c. the overheating protection circuit operates when the junction temperature reaches 150 c (this happens when the regulator is dissipating excessive power, outside temperature is high, or heat radiation is bad). the output current and the output voltage will drop when the protection circuit operates. however, operation begins again as soon as the output voltage drops and the temperature of the chip decreases. how to determine the thermal resistance when mounted on pcb the thermal resistance when mounted is expressed as follows: t j = ja pd+t a t j of ic is set around 150 c. pd is the value when the thermal sensor is activated. if the ambient temperature is 25 c, then: 150= ja pd+25 ja =125/pd ( c /mw)
tk637xxab6 gc3-o026 page 30 pd is easily calculated. a simple way to determine pd is to calculate v in i in when the output side is shorted. input current gradually falls as output voltage rises after working thermal shutdown. you should use the value when thermal equilibrium is reached. fig12-3: how to determine dpd 25 50 100 150 pd (mw) pd ta (c) 75 125 dpd 2 3 4 5 procedure (when mounted on pcb.) 1. find pd (v in i in when the output side is short- circuited). 2. plot pd against 25 c. 3. connect pd to the point corresponding to the 150 c with a straight line. 4. in design, take a vertical line from the maximum operating temperature (e.g., 75 c) to the derating curve. 5. read off the value of pd against the point at which the vertical line intersects the derating curve. this is taken as the maximum power dissipation dpd. 6. dpd (v in,max ? v out )=i out (at 75 c) the maximum output current at the highest operating temperature will be i out ? dpd (v in,max ? v out ). please use the device at low temperature with better radiation. the lower temperature provides better quality. 12-3. on/off control it is recommended to turn the regulator off when the circuit following the regulator is not operating. a design with little electric power loss can be implemented. we recommend the use of the on/off control of the regulator without using a high side switch to provide an output from the regulator. a highly accurate output voltage with low voltage drop is obtained. because the control current is small, it is possible to control it directly by cmos logic. fig12-4: the use of on/off control reg v sat on/off cont. control terminal voltage ((v cont ) on/off state v cont > 1.2v on v cont < 0.2v off parallel connected on/off control fig12-5: the example of parallel connected ic tk63742 tk63733 tk63715 4.2v 3.3v 1.5v on/off cont. v in v out the above figure is multiple regulators being controlled by a single on/off control signal. there is concern of overheating, because the power loss of the low voltage side ic (tk63715ab6) is large. the series resistor (r) is put in the input line of the low output voltage regulator in order to prevent over-dissipation. the voltage dropped across the resistor reduces the large input-to-output voltage across the regulator, reducing the power dissipation in the device. when the thermal sensor works, a decrease of the output voltage, oscillation, etc. may be observed. 12-4. influence by light when tk637xxab6 (fc-4) is exposed to strong light, the electrical characteristics change. please confirm the influence by light in your design.
tk637xxab6 gc3-o026 page 31 12-5. definition of term characteristics ? output voltage (v out ) the output voltage is specified with v in =(v outtyp +1v) and i out =5ma. ? maximum output current (i out, max ) the rated output current is sp ecified under the condition where the output voltage drops to 90% of the value specified with i out =5ma. the input voltage is set to v outtyp +1v and the current is pulsed to minimize temperature effect. ? dropout voltage (v drop ) the dropout voltage is the difference between the input voltage and the output voltage at which point the regulator starts to fall out of regulation. below this value, the output voltage will fall as the input voltage is reduced. it is dependent upon the output voltage, the load current, and the junction temperature. ? line regulation (linreg) line regulation is the ability of the regulator to maintain a constant output voltage as the input voltage changes. the line regulation is specified as the input voltage is changed from v in =v out,typ +1v to v in =6v. it is a pulse measurement to minimize temperature effect. ? load regulation (loareg) load regulation is the ability of the regulator to maintain a constant output voltage as the load current changes. it is a pulsed measurement to mi nimize temperature effects with the input voltage set to v in =v out,typ +1v. the load regulation is specified under an output current step condition of 1ma to 50ma. ? ripple rejection (rr) ripple rejection is the ability of the regulator to attenuate the ripple content of the input voltage at the output. it is specified with 500mv p-p , 1khz super-imposed on the input voltage, where v in =v out,typ +1.5v. ripple rejection is the ratio of the ripple content of the output vs. input and is expressed in db. ? standby current (i standby ) standby current is the curre nt which flows into the regulator when the output is turned off by the control function (v cont =0v). protections ? over current sensor the over current sensor protects the device when there is excessive output current. it also protects the device if the output is accidentally connected to ground. ? thermal sensor the thermal sensor protects the device in case the junction temperature exceeds the safe value (t j =150 c). this temperature rise can be caused by external heat, excessive power dissipation caused by large input to output voltage drops, or excessive output current. the regulator will shut off when the temperature exceeds the safe value. as the junction temperatures decrease, the regulator will begin to operate again. under sustained fault conditions, the regulator output will oscillate as the device turns off then resets . damage may occur to the device under extreme fault. please prevent the loss of the regulator when this protection operates, by reducing the input voltage or providing better heat efficiency. ? esd mm : 200pf 0 ? 150v or more hbm : 100pf 1.5k ? 2000v or more
tk637xxab6 gc3-o026 page 32 13. package outline ? 4-bump flip chip : fc-4 (tk637xxab6) m reference mount pad 4- 0.275 0.96 0.96 a 1 2 b mark 0.60 0.22 4- 0.30 0.05 a1 pin mark 0.03 0.5 0.5 0.5 0.5 0.05 lot no. 0.03 0.03 0.06 0.03 unit : mm package structure and others base material : si mark method : laser terminal material : lead free solder bump country of origin : japan solder composition : sn-2.5ag marking part number marking code part number marking code part number marking code tk63702ab6 d02 tk63728ab6 d28 tk63733ab6 d33 tk63715ab6 d15 tk63701ab6 d01 tk63735ab6 d35 tk63718ab6 d18 tk63729ab6 d29 tk63725ab6 d25 tk63730ab6 d30 tk63726ab6 d26 tk63731ab6 d31 tk63727ab6 d27 tk63732ab6 d32
tk637xxab6 gc3-o026 page 33 14. notes ? please be sure that you carefully discuss your planned purchase with our office if you intend to use the products in this application manual under conditions where particularly extreme standards of reliability are required, or if you intend to use products for applications other than those listed in this application manual. z power drive products for automobile, ship or aircraft transport systems; steerin g and navigation systems, emergency signal communications systems, and any system other than those mentioned above which include electronic sensors, measuring, or display devices, and which could cause major damage to life, limb or property if misused or failure to function. z medical devices for measur ing blood pressure, pulse, etc., treatment units such as coronary pacemakers and heat treatment units, and devices such as artificial organs and artificial limb systems which augment physiological functions. z electrical instruments, equipment or systems used in disaster or crime prevention. ? semiconductors, by nature, may fail or malfunction in spite of our devotion to improve product quality and reliability. we urge you to ta ke every possib le precaution against physical injuries, fire or other damages which may cause failure of our semiconductor products by taking appropriate measures, including a reasonable safety margin, malfunction preventive practices and fire-proofing when designing your products. ? this application manual is effective from sep.2008. note that the contents are subject to change or discontinuation without notice. when placing orders, please confirm specifications and delivery condition in writing. ? toko is not responsible for any problems nor for any infringement of third party patents or any other intellectual property rights that may arise from the use or method of use of the products listed in this application manual. moreover, this application manual does not signify that toko agrees implicitly or explicitly to license any patent rights or other intellectual property rights which it holds. ? none of the ozone depleting substances(ods) under the montreal protocol are used in our manufacturing process. 15. offices if you need more information on this product and other toko products, please contact us. ? toko inc. headquarters 1-17, higashi-yukigaya 2-chome, ohta-ku, tokyo, 145-8585, japan tel: +81.3.3727.1161 fax: +81.3.3727.1176 or +81.3.3727.1169 web site: http://www.toko.co.jp/ ? toko america web site: http://www.toko.com/ ? toko europe web site: http://www.tokoeurope.com/ ? toko hong kong web site: http://www.toko.com.hk/ ? toko taiwan web site: http://www.tokohc.com.tw/ ? toko singapore web site: http://www.toko.com.sg/ ? toko seoul web site: http://www.toko.co.kr/ ? toko manila web site: http://www.toko.com.ph/ ? toko brazil web site: http://www.toko.com.br/ semiconductor division your distributor

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