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ic data sheet ldo regulator with on/off switch tk112xxc meeting your needs
toko inc. ic data sheet tk112xxc gc3-h026 page 2 features features features features ? ? ? ? very low dropout voltage. (vdrop=105mv at 100ma) ? ? ? ? very good stability (cl=0.1 f is stable for any type capacitor with 2.5v vout) ? ? ? ? high precision output voltage ( 1.5 ? or ? 50mv) ? ? ? ? good ripple rejection ratio (80db at 1khz) ? ? ? ? wide operating voltage range (1.8v 14.5v) ? ? ? ? peak output current is 480ma.(10% down point) ? ? ? ? built-in short circuit protection ? ? ? ? built-in thermal shutdown ? ? ? ? suitable for very low noise applications ? ? ? ? built-in on/off control (0.1 a max standby current) high on ? ? ? ? very small surface mount packages sot23l / sot89 package ? ? ? ? built-in reverse bias over current protection description description description description the tk112xxc is an integrated circuit with a silicon monolithic bipolar structure. the regulator is of the low saturation voltage output type with very little quiescent current (65 a). the pnp power transistor is built-in. the i/o voltage difference is 0.17v (typical) when a current of 200ma is supplied to the system. because of the low voltage drop, the voltage source can be effectively used; this makes it very suitable for battery powered equipment. the on/off function is built into the ic. the current during standby mode becomes very small (pa level). the output voltage is available from 1.5 to 10.0v in 0.1v steps. the output voltage is trimmed with high accuracy. this allows the optimum voltage to be selected for the equipment. the over current sensor circuit and the reverse-bias protection circuit are built-in. it is a very rugged design because the esd protection is high. therefore, the tk112xxc can be used with confidence. when mounted on the pcb, the power dissipation rating becomes about 600mw/ 900mw, even though the packages are very small. the tk112xxc features very high stability in both dc and ac. the capacitor on the output side provides stable operation with 0.1 f with 2.5v vout. a capacitor of any type can be used; however, the larger this capacitor is, the better the overall characteristics are.
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 3 boldface boldface boldface boldface type type type type applies standard voltage. standard voltage. standard voltage. standard voltage. + + + + out out out out v code v code v code v code + + + + out out out out v code v code v code v code + + + + out out out out v code v code v code v code + + + + out out out out v code v code v code v code 1.5 v 15 2.5 v 25 3.5 v 35 4.5 v 45 1.6 16 2.6 26 3.6 36 4.6 46 1.7 17 2.7 27 3.7 37 4.7 4.7 4.7 4.7 47 47 47 47 1.8 18 2.8 2.8 2.8 2.8 28 28 28 28 3.8 3.8 3.8 3.8 38 38 38 38 4.8 48 1.9 19 2.9 2.9 2.9 2.9 29 29 29 29 3.9 39 4.9 49 2.0 2.0 2.0 2.0 20 20 20 20 3.0 3.0 3.0 3.0 30 30 30 30 4.0 4.0 4.0 4.0 40 40 40 40 5.0 5.0 5.0 5.0 50 50 50 50 2.1 21 3.1 31 4.1 41 2.2 22 3.2 3.2 3.2 3.2 32 32 32 32 4.2 42 2.3 23 3.3 3.3 3.3 3.3 33 33 33 33 4.3 43 2.4 24 3.4 34 4.4 44 please contact your authorized toko representative for voltage availability operating temp. range c:-30 80 c i :-40 85 c voltage code voltage code voltage code voltage code ex 3.3v : 33 5.0v : 50 tape/reel code package code m : sot-23l u : sot89 ordering ordering ordering ordering information information information information tk tk tk tk 2 2 2 2 c m c m c m c m (special sorting) n : noise l l l l
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 4 c rank device c rank device c rank device c rank device absolute maximum ratings absolute maximum ratings absolute maximum ratings absolute maximum ratings parameters symbol limiting values unit supply voltage vcc max ? 0.4 16 v reverse bias vrmax ? 0.4 6v np pin voltage vnpmax ? 0.4 5v control pin voltage vcontmax ? 0.4 16 v storage temperature range tstg ? 55 150 c operating voltage range vop 1.8 14.5 v operating temperature range top ? 30 80 c short circuit current ishort 500 ma power dissipation internally limited m : 600mw mounted (reference) u : 900mw mounted (reference) 5 pin mini flat package electrical electrical electrical electrical characteristics characteristics characteristics characteristics test condition vtest=vout typ +1v vcont=1.8v (ta=25 c) parameters symbol min typ max unit condition output voltage vout 1.5% or 50mv iout = 5ma line regulation linreg 0 6 mv ? v=5v vtest=vout typ +1v---- vout typ +6v 0.5 1.1 % 5ma < iout < 100ma 1.0 2.2 % 5ma < iout < 200ma load regulation 2.5v vo 5.0v loareg 1.6 3.7 % 5ma < iout < 300ma 0.8 1.8 % 5ma < iout < 100ma 1.5 3.4 % 5ma < iout < 200ma 1.5v vo 2.4v loareg 2.4 5.3 % 5ma < iout < 300ma 105 170 mv iout=100ma 170 270 mv iout=200ma vdrop 235 370 mv iout=300ma (2.4v (2.4v (2.4v (2.4v vo ut) vo ut) vo ut) vo ut) dropout voltage 1.5v 1.5v 1.5v 1.5v vo ut vo ut vo ut vo ut 2.0v 2.0v 2.0v 2.0v : :: : no regulation no regulation no regulation no regulation because of vo p min =1.8v maximum output current ioutmax 380 480 ma ( vo ut typ . 0.9) quiescent current iq 65 90 a iout=0ma excluding icont standby current istandby 0 0.1 a vcc=8v , vcont 0.15v off state ground pin current ignd 1.8 3.0 ma iout=100ma control terminal specification (pull down resistor = 500k) note 1 control current icont 5 10 a vcont=1.8v on state 1.6 v on state control voltage vcont 0.6 v off state np treminal voltage vnp 1.28 v vo vo /ta typ=35 ppm/ c reference value out put noise vno 0.14 0.25 v/ hz at1khz reference value note 1: the input current decreases to the pa level by connecting the control terminal to gnd. (off state). the pull-down resistor is 500k ? . general note: limits are guaranteed by production testing or correction techniques using statistical quality control (sqc) methods. unless otherwise noted. vtest=vout typ +1v ; il=1ma (tj=25 c ) the operation of ? 30 c ? 80 c is guaranteed in the design by a usual inspection. general note: exceeding the ?absolute maximum rating ? may damage the device general note: connecting a capacitor to the noise bypass pin can decrease the output noise voltage general note: output noise is 0.14-0.25 v/ hz at 1khz : 23 75 vrms at bw400-80khz general note: the ripple rejection is 84db at 400hz and 80db at 1khz. [cl=1.0 f,cnp=0.01 f,vnois=200mv rms ,vin=vout typ +1.5v,iout=10ma]
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 5 i rank i rank i rank i rank absolute absolute absolute absolute maximum maximum maximum maximum ratings are same as c rank ratings are same as c rank ratings are same as c rank ratings are same as c rank operating temperature operating temperature operating temperature operating temperature range range range range top to p to p to p = = = = ? ? ? ? 4 4 4 40 0 0 0 8 8 8 85 5 5 5 c c c c operating voltage operating voltage operating voltage operating voltage range vop=2.1v range vop=2.1v range vop=2.1v range vop=2.1v 14.5v 14.5v 14.5v 14.5v other items are same as c rank. boldface type applies over the full operating temperature range. ( ? 40 85 c) vtest=vout typ +1v iout=5ma parameters symbol min typ max unit condition output voltage vout 1.5% or 50mv ( 2.5% or 80mv) iout = 5ma line regulation linreg 0 6 8 mv ? v=5v 0.5 1.1 1.3 %5ma < iout < 100ma 1.0 2.2 2.8 %5ma < iout < 200ma load regulation 2.5v vo 5.0v loareg 1.6 3.7 5.3 %5ma < iout < 300ma 0.8 1.8 2.0 %5ma < iout < 100ma 1.5 3.4 4.1 %5ma < iout < 200ma 1.5v vo 2.4v loareg 2.4 5.3 6.5 %5ma < iout < 300ma 105 170 200 mv iout=100ma 170 270 320 mv iout=200ma vdrop 235 370 440 mv iout=300ma (2.4v (2.4v (2.4v (2.4v vo ut) vo ut) vo ut) vo ut) dropout voltage 1.5v 1.5v 1.5v 1.5v vo ut vo ut vo ut vo ut 2.1v 2.1v 2.1v 2.1v : :: : no regulation no regulation no regulation no regulation because of vo p min =2.1v maximum output current ioutmax 380 340 480 < a vo ut= ( vo ut typ . 0.9) quiescent current iq 65 90 100 a iout=0ma except icont standby current istandby 0 0.1 0.5 avcont 0.15v 0ff state gnd pin current ignd 1.8 3.0 3.6 ma iout=100 < a control terminal specification (pull down resistor =500k ) note 1 control current icont 5 10 12 a vcont=1.8v on state 1.6 1.8 v on state control voltage vcont 0. 6 0.35 v off state np terminal voltage vnp 1.28 v vo vo /ta typ=35 ppm/ c reference value out put noise vno 0.14 0.25 v/ hz at1khz reference value note 1: the input current decreases to the pa level by connecting the control terminal to gnd. (off state). the pull-down resistor is 500 k ? . ,5,9(3?6;,? limits are guaranteed by production testing or correction techniques using statistical quality control (sqc) methods. unless otherwise noted. vtest=vout typ +1v ; il=1ma (tj=25 c ) the operation of -30 ? -80 ? is guaranteed in the design by a usual inspection. general note: exceeding the ?absolute maximum rating ? may damage the device general note: connecting a capacitor to the noise bypass pin can decrease the output noise voltage general note: output noise is 0.14-0.25 v/ hz at 1khz : 23 75 vrms at bw400-80khz general note: the ripple rejection is 84db at 400hz and 80db at 1khz. [cl=1.0 f,cnp=0.01 f,vnois=200mv rms ,vin=vout typ +1.5v,iout=10ma]
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 6 application block diagram pin layout top view gnd bandgap reference cont. vin 6<; constant current source control circuit thermal & over current protect np 500k gnd gnd gnd gnd vin v in vin v in 1 2 3 5 4 vout v out vout v out on/off on/off on/off on/off control control control control np np np np( ( ( (vref) vref) vref) vref) sot89 note the terminal connection reverses between sot-23l and sot89. iin + cl= cl= cl= cl=0.22 0.22 0.22 0.22 f f f f cl= cl= cl= cl=1.0 1.0 1.0 1.0 f f f f iout icont v cont cin=0.1 f cnp=0.1 f + in cont. vin vo ut gnd np gnd vin v in vin v in 12 3 4 vout v out vout v out on/off on/off on/off on/off control control control control gnd gnd gnd gnd np np np np( ( ( (vref) vref) vref) vref) 6 sot-23l 5 gnd terminal 2 and 5 are connected internally.
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 7 input input input input /output capacitors /output capacitors /output capacitors /output capacitors linear regulators require input and output capacitors in order to maintain the regulator's loop stability. if a 0.1 f capacitor is connected to the output side, the ic provides stable operation at any voltage in the practical current region. however, increase the cl capacitance when using the ic in the low current region and low voltage. otherwise, the ic oscillates. the equivalent series resistance (esr) of the output capacitor must be in the stable operation area. however, it is recommended to use as large a value of capacitance as is practical. the output noise and the ripple noise decrease as the capacitance value increases. esr values vary widely between ceramic and tantalum capacitors. however, tantalum capacitors are assumed to provide more esr damping resistance, which provides greater circuit stability. this implies that a higher level of circuit stability can be obtained by using tantalum capacitors when compared to ceramic capacitors with similar values. the input capacitor is necessary when the battery is discharged, the power supply impedance increases, or the line distance to the power supply is long. this capacitor might be necessary on each individual ic even if two or more regulator ics are used. it is not possible to determine this indiscriminately. please confirm the stability while mounted. the ic provides stable operation with an output side capacitor of 0.1 f (vout ? 2.5v). if it is 0.1 f or more over the full range of temperature, either a ceramic capacitor or tantalum capacitor can be used without considering esr. it is not possible to say indiscriminately. please confirm stability while mounted. output voltage, output current vs. stable operation area the above graphs show stable operation with a ceramic capacitor of 0.1uf (excluding the low current region). if the capacitance is not increased in the low voltage, low current area, stable operation may not be achieved. please select the best output capacitor according to the voltage and current used. the stability of the regulator improves if a big output side capacitor is used (the stable operation area extends.) please use as large a capacitance as is practical. although operation above 150 ma has not been described, stability is equal to or better than operation at 150 ma. generally, a ceramic capacitor has both a temperature characteristic and a voltage characteristic. please consider both characteristics when selecting the part. the b curves are the recommend characteristics. for evaluation kyocera :cm05b104k10ab z cm05b224k10ab z cm105b104k16a z cm105b224k16a z cm21b225k10a murata :grm36b104k10 z grm42b104k10 y grm39b104k25 z grm39b224k10 z grm39b105k6.3 iout [ma] cl ? 0.33 uf all stable iout [ma] cl ? 0.33 uf all stable iout [ma] cl ? 0.68 uf all stable iout [ma] cl ? 1.0 uf all stable iout [ma] cl ? 2.2uf all stable 0.01 0.1 1 10 100 0.5 50 100 150 esr [ ] vout=5.0v vout=5.0v vout=5.0v vout=5.0v 0.01 0.1 1 10 100 150 0.5 50 100 esr [ ] vout=4.0v vout=4.0v vout=4.0v vout=4.0v stable stable stable stable area area area area cl=0.068uf cl=0.068uf cl=0.068uf cl=0.068uf vout= vout= vout= vout=2.5v 2.5v 2.5v 2.5v 3.0v 3.0v 3.0v 3.0v 0.01 0.1 1 10 100 0.5 50 100 150 esr [ ] stable stable stable stable area area area area cl=0. cl=0. cl=0. cl=0.068 068 068 068uf uf uf uf vout= vout= vout= vout=1.8 1.8 1.8 1.8v v v v 2.2 2.2 2.2 2.2v v v v 0.01 0.1 1 10 100 2.0 50 100 150 esr [ ] vout=1.5v vout=1.5v vout=1.5v vout=1.5v 0.01 0.1 1 10 100 4.0 50 100 150 esr [ ] stable stable stable stable area area area area cl= cl= cl= cl=0.1 0.1 0.1 0.1 uf uf uf uf stable stable stable stable area area area area cl=0.068uf cl=0.068uf cl=0.068uf cl=0.068uf stable stable stable stable area area area area cl=0. cl=0. cl=0. cl=0.068 068 068 068uf uf uf uf the recommended value cin=cl=0.22 f(mlcc) iout ? 0.5ma. cin=0.22 f 0.1 f v out cl=0.22 f 0.1 f % capacitance vs. voltage 0 bias voltage v cap 2 46 8 10 50 60 70 80 90 100 b curve f curve capacitance vs. temperature % 60 50 80 90 100 70 cap -50 -25 0 25 50 75 100 ta( ) b curve f curve
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 8 output noise output noise output noise output noise increase cnp to decrease the noise. the recommended cnp capacitance is 6800pf(682) - 0.22 f(224). the amount of noise increases with the higher output voltages. tk11230 cnp vs. noise iout=30ma bpf=400hz 80khz tk11230cs cin=10 f iout=10ma tk11230c cnp vs noise cnp f noise uvrms) 0 50 100 150 200 250 300 1 10 100 1000 10000 100000 cl=0.22uf cl=0.47uf cl=1.0uf cl=2.2uf cl=10uf iout=30ma bpf:400 80khz cl=tantal cl=mlcc noise (uvrms) tk11230c iout vs noise 35 40 45 50 55 60 65 70 75 80 85 90 95 0 50 100 150 200 250 300 iout(ma) noise(uvrms) cnp=10000pf bpf:400 80khz cl= cl= cl= cl=tantal tantal tantal tantal cl=0.22uf cl=0.47uf cl=1.0uf cl=2.2uf cl=10uf tk11230c iout vs. noise 35 40 45 50 55 60 65 70 75 80 85 90 95 0 50 100 150 200 250 300 iout(ma) noise(uvrms) cnp=10000pf bpf:400 80khz cl= cl= cl= cl=mlcc mlcc mlcc mlcc cl=0.22uf cl=0.47uf cl=1.0uf cl=2.2uf cl=10uf noise level(1/f) 0.01 0.1 1 10 10 100 1k 10k 100k frequency hz) noise( v/ hz) cl=0.22 cl=0.22 cl=0.22 cl=0.22 f f f f ceramic) ceramic) ceramic) ceramic) cnp=0.01 f cnp=0.1 f cnp=1000pf tk112xxc vout vs noise 10 20 30 40 50 60 70 80 90 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 vout ( v ) iout=30ma cnp=10000pf cl=0.22uf mlcc bpf:400 80khz
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 9 ripple rejection ripple rejection ripple rejection ripple rejection the ripple rejection 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 while operating. cl gnd 112xx v out v in cnp 0.1 f v cont cl=1 cl=1 cl=1 cl=1 uf uf uf uf tantal tantal tantal tantal cl= cl= cl= cl= uf uf uf uf mlcc mlcc mlcc mlcc cl=0.22uf cl=0.22uf cl=0.22uf cl=0.22uf mlcc mlcc mlcc mlcc cl=0.22 cl=0.22 cl=0.22 cl=0.22 uf uf uf uf tantal tantal tantal tantal a a a a cref=0.1uf cref=0.1uf cref=0.1uf cref=0.1uf b b b b cref=0.001uf cref=0.001uf cref=0.001uf cref=0.001uf ripple rejection vs. iout -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0 50 100 150 200 250 300 iout(ma) r.r(db) cn p =0.01 f ceramic) vin=5.0v vri pp le=500mv p - p freq=1khz freq=400hz ripple rejection at low vin -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 vin-vout_typ(v) r.r (db) cin:none vripple=100mvp-p freq:1khz cnp:0.01 f cl:0.22 f ceramic) iout:1 , 50 , 100 , 150 , 200 , 250 , 300ma vin=5.0v vout=3.0v iout=10ma vr=500mvp-p f=100 1mhz cnp=0.1uf a a a a cl=10uf ( cl=10uf ( cl=10uf ( cl=10uf (tantal tantal tantal tantal b b b b cl=0.22uf cl=0.22uf cl=0.22uf cl=0.22uf tantal tantal tantal tantal
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 10 tk112xxcm y transient ~ ~ ~ ~ on on on on ? ? ? ? off transient off transient off transient off transient y cl= variable cl= variable cl= variable cl= variable y y y y cnp=0.001 cnp=0.001 cnp=0.001 cnp=0.001 f f f fcl= variable cl= variable cl= variable cl= variable y y y y cnp=0.01 cnp=0.01 cnp=0.01 cnp=0.01 f f f f y cnp= variable cnp= variable cnp= variable cnp= variable y y y y cl=1 cl=1 cl=1 cl=1 f f f f cl= variable cnp=0.01 cl= variable cnp=0.01 cl= variable cnp=0.01 cl= variable cnp=0.01 f f f f y y y y io=30ma io=30ma io=30ma io=30ma ) he rise time of the regulator depends on cl and cnp; the fall time depends on cl. 1.0v/div 1.0v/div 1.0v/div 1.0v/div 250 250 250 250 s/div s/div s/div s/div vo u vo u vo u vo u vcont vcont vcont vcont off off off off on on on on cnp= 0.001 0.001 0.001 0.001 f f f f 0.1 0.1 0.1 0.1 f f f f 0.01 0.01 0.01 0.01 1.0v/div 1.0v/div 1.0v/div 1.0v/div 10 10 10 10 s/div s/div s/div s/div vo u vo u vo u vo u vcont vcont vcont vcont off off off off on on on on cl= cl= cl= cl= 0.22 0.22 0.22 0.22 f f f f 2.2 2.2 2.2 2.2 f f f f 1.0 1.0 1.0 1.0 f f f f 1.0 1.0 1.0 1.0 f , f , f , f , 1.0v/div 1.0v/div 1.0v/div 1.0v/div 50 50 50 50 s/div s/div s/div s/div vo u vo u vo u vo u vcont vcont vcont vcont off off off off on on on on cl= cl= cl= cl= 0.22 0.22 0.22 0.22 f f f f 1.0v/div 1.0v/div 1.0v/div 1.0v/div 250 250 250 250 s/div s/div s/div s/div vo u vo u vo u vo u vcont vcont vcont vcont off off off off on on on on 1.0 1.0 1.0 1.0 f f f f 2.2 2.2 2.2 2.2 f f f f cl= cl= cl= cl= 0.22 0.22 0.22 0.22 f f f f cl gnd gnd gnd gnd 112xx iout=30ma v in=4.0v cnp 0.01 f cin=1.0 f
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 11 ~ load transient load transient load transient load transient when the capacitor on the load side is increased, the load change becomes smaller. the no load voltage change can be greatly improved by delivering a little load current to ground (see right curve above). increase the load side capacitor when the load change is fast or when there is a large current change. in addition, at no load, the voltage change can be reduced by delivering a little load current to ground. ~ ~ ~ ~ line line line line y y y y transient transient transient transient cl gnd gnd gnd gnd 112xx iout=30ma v in=4.0v cnp 0.01 f cin=1.0 f v cont=2.0v vo ut vo ut vo ut vo ut iout iout iout iout 3ma 3ma 3ma 3ma 33ma 33ma 33ma 33ma 3ma 3ma 3ma 3ma 33ma 33ma 33ma 33ma cl=1.0 cl=1.0 cl=1.0 cl=1.0 f f f f z z z z 2.2uf 2.2uf 2.2uf 2.2uf cl=0.22 cl=0.22 cl=0.22 cl=0.22 f f f f cl= variable cl= variable cl= variable cl= variable y y y y cn p =0.01 cn p =0.01 cn p =0.01 cn p =0.01 f f f f vo ut vo ut vo ut vo ut vin vin vin vin ? ? ? ? v v v v cl=0.22 cl=0.22 cl=0.22 cl=0.22 f f f f cl=1.0 cl=1.0 cl=1.0 cl=1.0 f f f f cl=2.2 cl=2.2 cl=2.2 cl=2.2 f f f f cl= variable cl= variable cl= variable cl= variable y y y y cnp=0.01 cnp=0.01 cnp=0.01 cnp=0.01 f f f f vo ut vo ut vo ut vo ut vin vin vin vin ? ? ? ? v v v v cnp=0.001 cnp=0.001 cnp=0.001 cnp=0.001 f f f f cnp=0.01 cnp=0.01 cnp=0.01 cnp=0.01 f f f f cnp=0.1 cnp=0.1 cnp=0.1 cnp=0.1 f f f f cnp= variable cnp= variable cnp= variable cnp= variable y y y y cl=1 cl=1 cl=1 cl=1 f f f f vo ut vo ut vo ut vo ut iout iout iout iout 33ma 33ma 33ma 33ma yy yy yy yy 30ma 30ma 30ma 30ma y y y y 3ma 3ma 3ma 3ma yy yy yy yy 0ma 0ma 0ma 0ma y y y y 30ma 30ma 30ma 30ma y y y y 33ma 33ma 33ma 33ma 0ma 0ma 0ma 0ma y y y y 3ma 3ma 3ma 3ma iout=0 iout=0 iout=0 iout=0 ? ? ? ? 30ma 30ma 30ma 30ma iout=3 iout=3 iout=3 iout=3 ? ? ? ?? ? ? ? 33ma 33ma 33ma 33ma iout=0 iout=0 iout=0 iout=0 ? ? ? ? 30ma 30ma 30ma 30ma | | | | 3 3 3 3 ? ? ? ? 33ma 33ma 33ma 33ma vo ut vo ut vo ut vo ut iout iout iout iout iout= iout= iout= iout=0 0 0 0 e e e e 30ma 30ma 30ma 30ma iout=3 iout=3 iout=3 iout=3 e e e e 33ma 33ma 33ma 33ma magnification
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 12 load regulation ? ? 6<;?4e vout(mv) - 0 v o=2.0v vo = 5. 0v -35 -30 -25 -20 -15 -10 -5 0 5 10 15 0 5 10 15 20 vin(v) vout(mv) vo1.5v vo2.0v vo3.0v vo4.0v vo5.0v line regulation vdrop ? ?? ?? ? ? ? ? ?? ?? ? ? ? 6<;?4e +967?4e regulation point ? vin(mv) ? ? ?? ? ? vout(mv) 6<;4 6<;4 6<;44?4?4444 vcont vs. y icont ? ? ? ?? ? ? ?? ? *65;?e *65;?<e *65; 6<;
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 13 standby current ???? ????? ???? ??? ???? ???t ???y ??? ???? ? y ? ? ? ?? ?y ?? 05?e :;(5+)@?e short circuit current 0.0 1.0 2.0 3.0 4.0 5.0 6.0 0 100 200 300 400 500 iout(ma) vout(v) gnd current 0 1 2 3 4 5 6 7 8 9 10 11 12 0 50 100 150 200 250 300 iout(ma) ignd(ma) vo1.5v vo2.0v vo3.0v vo4.0v vo5.0v reverse bias current 0 10 20 30 40 50 60 012345678910 vrev(v) irev(ua) vout 5v vout 2v vout 4v vout 3v ioutmax(ma ) ioutmax at low vop tk11215 tk11224 0 50 100 150 200 250 300 350 400 450 500 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 vop v)
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 14 temperature characteristics ( ta: ambient temperature) iout (ma) max iout 340 360 380 400 420 440 460 480 500 -50 -25 0 25 50 75 100 ta( ) vout= vo ut typ . 0.9 gnd current ignd(ma) iout=300ma 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 -50 -25 0 25 50 75 100 ta( ) io=50ma io=100ma io = 150ma io=200ma on/off point vcont(v) 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 -50 -25 0 25 50 75 100 ta( ) vcont ( onpoint ) vcont ( offpoint ) control current icont(ua) 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 -50 -25 0 25 50 75 100 ta( ) vcont = 1.8v vcont=4.0v vcont=2.0v vcont=3.0v dropout voltae vdrop(mv) ) ) ) -50 -25 0 25 50 75 100 ta ( ) 0 50 100 150 200 250 300 350 io=300ma io=100m io=150ma io=200ma io=50ma 150 200 250 300 350 400 450 500 550 -50 -25 0 25 50 75 100 ta( ) ioutmax(ma) vin=1.9/2.0/2.1/2.2/2.3/2.4/2.5v output current vin=1.9v vin=2.2v vin=2.0v vin=2.1v
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 15 output voltage vs. temperature characteristics -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 -50 -25 0 25 50 75 100 ta( ) vout(mv) vout=3.0v -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 -50 -25 0 25 50 75 100 ta( ) vout(mv) vout=2.0v -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 vout(mv) vout=4.0v -50 -25 0 25 50 75 100 ta( ) vout(mv) vout=1.5v -50 -25 0 25 50 75 100 ta( ) -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 vout(mv), vout=5.0v -50 -25 0 25 50 75 100 ta( ) -35 -30 -25 -20 -15 -10 -5 0 5 10 15 20
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 16 layout layout layout layout y y y y yy pcb material glass epoxy t=0.8mm sot-23l sot-23l sot-23l sot-23l sot-89 sot-89 sot-89 sot-89 derating curve derating curve derating curve derating curve the package loss is limited at the temperature that the internal temperature sensor works (about 150 ? ). therefore, the package loss is assumed to be an internal limitation. there is no heat radiation characteristic of the package unit assumed because of the small size. heat is carried away by the device being installed on the pcb. this value changes by the material and the copper pattern etc. of the pcb. the losses are approximately 600 <, sot-23l 900 <, sot-89 . enduring these losses becomes possible in a lot of applications operating at 25 ? . determining the thermal resistance when mounted on determining the thermal resistance when mounted on determining the thermal resistance when mounted on determining the thermal resistance when mounted on a a a a pcb. pcb. pcb. pcb. the operating chip junction temperature is shown by tj= ja pd+ta. tj of the ic is set to about 150 ? . pd is a value when the overtemperature sensor is made to work. pd is pd is pd is pd is easily easily easily easily obtained. obtained. obtained. obtained. mount the ic on the pcb. pd becomes vin iin when the output side of the ic is short-circuited. the input current decreases gradually by the temperature rise of the chip. please use the value when the current is steady (thermal equilibrium is reached). in many cases, heat radiation is good, and pd becomes 600mw/900 mw or more. pd is obtained by the normal temperature in degrees. the current that can be used at the highest operating temperature is obtained from the graph of the figure below. procedure (do when pcb mounted). 1. pd is obtained (vin iin when the output side is short-circuited). 2. pd is plotted on the horizontal line to 25 ? . 3. pd is connected with the point of 150 ? by the straight line (bold face line). 4. a line is extended vertically above the point of use temperature in the design. for instance, 75 ? is assumed (broken line). 5. extend the intersection of the derating curve (fat solid line) and (broken line) to the left and read the pd value. 6. dpd ? (vinmax ? vout)=iout (at 75 ? ) the maximum current that can be used at the highest operating temperature is: iout iout iout iout dpd dpd dpd dpd ? ? ? ? (vinmax (vinmax (vinmax (vinmax ? ? ? ? vout). vout). vout). vout). please do derating with 4mw/ ? at pd=500mw and 25 ? or more. thermal resistance is ( ja=250 ? /w). v out on/off v in please do derating with 7.2mw/ ? at pd=900mw and 25 ? or more. thermal resistance is ja 1 138 ? /w 600 sot-89 -7.2mw/ ? 25 50 ? 100 150 % d(m , ) (85) ? 900 sot-23 - l -4.8mw/ ? on/off v in v out ta ) a=25 ? 150 1 ja pd 25 ja % d 1 125 ja 1 125 ? pd ( ?? m , ) % d(m , ) 25 50 100 150 ? (75) pd pd 2 3 4 5
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 17 application application application application y y y y hint hint hint hint on/off y control it is recommended to turn the regulator off when the circuit following the regulator is non-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. the pulldown resistance (500k
) is built into the control terminal. the noise and the ripple rejection characteristics depend on the capacitance on the vref terminal. the ripple rejection characteristic of the low frequency region improves by increasing the capacitance of cnp. a standard value is cnp=0.068 f. increase cnp in a design with important output noise and ripple rejection requirements. the ic will not be damaged if the capacitor value is increased. the on/off switching speed changes depending on the np terminal capacitance. the switching speed slows when the capacitance is large. parallel parallel parallel parallel y y y y connected connected connected connected y y y y on/off on/off on/off on/off control control control control current boost current boost current boost current boost for current boost applications, use the products below. a low voltage drop, high current regulator can be easily made. tk714xx yy only the pnp transistor for the current boost is external. tk732xx y for iout=10a max regulator) built-in short circuit protection: a constant current can be set by an external resistor. the figure at the left illustrates multiple regulators being controlled by a single on/off control signal. there is a possibility of overheating because the power loss of the low voltage side ic (tk11220c) 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. 2.0v 5v 3.3v on/off cont. + in tk11250c tk11233c tk11220c r reg vsat on/off cont.
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 18 definition of term definition of term definition of term definition of terms s s s the output voltage tables are specified with a test voltage of vin=output voltage (typ.) + 1v. output voltage ( output voltage ( output voltage ( output voltage (vout) vo u t) vo u t) vo u t) the output voltage is specified with (vin = output voltage (typ.) + 1v) and output current (iout=5ma). maximum output current ( maximum output current ( maximum output current ( maximum output current (iout max) iout max) iout max) iout max) the output current is measured when the output voltage decreases to ( vo ut typ . 0.9) . the input voltage is (output voltage (typ.) + 1v). the maximum output current is measured in a short time so that it is not influenced by the temperature of the chip. the output current decreases with low voltage operation. please refer to the "low input voltage-output current" graph for 2.1v or less. dropout voltage ( dropout voltage ( dropout voltage ( dropout voltage (vdrop) vdrop) vdrop) vdrop) 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 load current (iout) and the junction temperature (tj). the input voltage is gradually decreased below the test voltage. it is the voltage difference between the input and the output when the output voltage decreases by 100mv. line regulation line regulation line regulation line regulation lin lin lin lin reg reg reg reg 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 (output voltage (typ.) + 1v) to (output voltage (typ.) + 6v). this measurement is not influenced by the temperature of the ic and is measured in a short time. load regulation load regulation load regulation load regulation loa loa loa load d d d reg reg reg reg load regulation is the ability of the regulator to maintain a constant output voltage as the load current changes. the input voltage is set to (output voltage (typ.) + 1v). the output voltage change is measured as the load current changes from to 5 to 100ma and from 5 to 200ma. this measurement is not influenced by the temperature of the ic and is measured in a short time. quiescent current quiescent current quiescent current quiescent current iq iq iq iq the quiescent current is the current which flows through the ground terminal under no load conditions (io=0ma). ripple rejection ripple rejection ripple rejection ripple rejection '' '' '' '' ripple rejection is the ability of the regulator to attenuate the ripple content of the input voltage at the output. it is specified with the input voltage = vo ut 1.5v , iout=10ma, cl=1.0 f and c np =0.01 f an alternating current source of (f=1khz and 200 < v rms ) is superimposed to the power-supply voltage. ripple rejection is the ratio of the ripple content of the output vs. the input and is expressed in db. it is typically about 80db at 1khz. the ripple rejection improves when the value of the capacitor at the noise bypass terminal in the circuit is large. however, the on/off response worsens. standby current standby current standby current standby current. . . .( ( ( (istandby) istandby) istandby) istandby) standby current is the current which flows into the regulator when the control voltage is made 0 volts. it is measured with an input voltage of 8v.
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 19 protection circuit protection circuit protection circuit protection circuits s s s thermal thermal thermal thermal sensor sensor sensor sensor the thermal sensor protects the device if the junction temperature exceeds the safe value (tj=150 c). this temperature rise can be caused by extreme heat, excessive power dissipation caused by large output voltage drops, or excessive output current. the regulator will shut off when the temperature exceeds the safe value. as the junction temperature decreases, the regulator will begin to operate again. under sustained fault conditions, the regulator output will oscillate as the device turns off then resets. please improve heat radiation or lower the input electric power. when heat radiation is poor, the forecast package loss is not obtained. reverse bias current reverse bias current reverse bias current reverse bias current the reverse bias protection prevents excessive current from flowing through the ic even if the input voltage becomes 0 with voltage impressed on the output side (input short-circuited to gnd). the maximum reverse bias voltage is 6v. ~(??????????y7 ?
?yy?05 y?7 ???2
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toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 20 yy y y y outline outline outline outline ? ? ? ? pcb pcb pcb pcb ? ? ? ? stamps stamps stamps stamps + + + + out out out out v code v code v code v code + + + + out out out out v code v code v code v code + + + + out out out out v code v code v code v code + + + + out out out out v code v code v code v code 1.5 v 15 2.5 v 25 3.5 v 35 4.5 v 45 1.6 16 2.6 26 3.6 36 4.6 46 1.7 17 2.7 27 3.7 37 4.7 47 1.8 18 2.8 28 3.8 38 4.8 48 1.9 19 2.9 29 3.9 39 4.9 49 2.0 20 3.0 30 4.0 40 5.0 50 2.1 21 3.1 31 4.1 41 2.2 22 3.2 32 4.2 42 2.3 23 3.3 33 4.3 43 2.4 24 3.4 34 4.4 44 the output voltage table indicates the standard value when manufactured. 3,(:,?*65;(*;?@6<9?(<;/690a,+?626?9,79,:,5;(;0=,?-69?=63;(.,? (=(03()030;@ vo ltag e code " " " " " " " " '-- '-- '-- '-- 0.4 +0.15 -0.05 0.1 5-0.32 +0.15 -0.05 0.1 0.95 0.95 type y code e e recommended mount pad 0.95 0.95 1.0 0.6 3.0 e e e 1 1.4max 2.2 ? 0.2 0.15 ? 0.1 0 ? 0.1 1.2 ? 0.2 0.3 3.3 ? 0.3 0.4 ? 0.2 15omax +0.3 -0.1 (3.4) 3.5 0.1 molded resin with body epoxy resin lead frame copper alloy treatment solder plating( 5 ? 15 < ) marking method ink or laser weight 0.023g country of origin japan or korea unit mm general tolerance ? 0.2
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 21 sot89 sot89 sot89 sot89 + + + + out out out out v code v code v code v code + + + + out out out out v code v code v code v code + + + + out out out out v code v code v code v code + + + + out out out out v code v code v code v code 1.5 v 15 2.5 v 25 3.5 v 35 4.5 v 45 1.6 16 2.6 26 3.6 36 4.6 46 1.7 17 2.7 27 3.7 37 4.7 47 1.8 18 2.8 28 3.8 38 4.8 48 1.9 19 2.9 29 3.9 39 4.9 49 2.0 20 3.0 30 4.0 40 5.0 50 2.1 21 3.1 31 4.1 41 2.2 22 3.2 32 4.2 42 2.3 23 3.3 33 4.3 43 2.4 24 3.4 34 4.4 44 the output voltage table indicates the standard value when manufactured. 3,(:,?*65;(*;?@6<9?(<;/690a,+?626?9,79,:,5;(;0=,?-69?=63;(.,? (=(03()030;@ unit mm general tolerance ? 0.2 molded resin with body epoxy resin lead frame copper alloy treatment solder plating(5 ? 15 < ) marking method ink or laser weight 0.053 g country of origin japan 1.0 1.0 2.5 ? 0.2 4.5 +0.5 -0.3 0.44 max voltage code 0.49 max 0.49 max 0.49 max 1.6 4.5 ? 0.2 0.49 max 0.49 max 0.54 max 1.0 2.5 ? 0.2 0.4 -- lot no type code ' :112xx 0.7max 1.0 0.7max 1.5 1.5 2.0 1.5 0.7 0.8 1.5 0.7 45 recommended mount pad e e 1.5 ? 0.2 1.5 1.5 3.0 e e y e ?
toko inc. ic data sheet tk112xxc gc3-h026 gc3-h026 gc3-h026 gc3-h026 page page page page 22 note note note note please be sure that you carefully discuss your planned purchase with our office if you intend to use the products in this data sheet 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 data sheet. z power drive products for automobile, ship or aircraft transport systems; steering 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 measuring 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 take every possible 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 data sheet is effective from aug. 2001 . 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 data sheet. moreover, this data sheet does not signify that toko agrees implicitly or explicitly to license any patent rights or other intellectual property rights which it holds. ? none of ozone depleting substances(ods) under the montreal protocol is used in manufacturing process of us. if you need more information on this product and other toko products, please contact us. office office office office yyy ? 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/ your distributor meeting your needs to build the quality relied by costomers

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