utc 78LXX linear int egrat ed ci rcuit utc unisonic technologies co., ltd. 1 qw-r101-001,d 3-terminal 0.1a positive voltage regulator description the utc 78LXX family is monolithic fixed voltage regulator integrated circuit. they are suitable for applications that required supply current up to 100ma. features *output current up to 100ma *fixed output voltage of 5v, 6v, 8v, 9v, 12v, 15v, 18v and 24v available *thermal overload shutdown protection *short circuit current limiting to-92 1 sop-8 sot-89 1 sop-8 1:output 2,3,6,7:gnd 8:input 4,5:n.c. to-92 1:output 2:gnd; 3:input sot-89 1:output 2:gnd; 3:input test circuit 1 3 2 gnd output input r13 r17 r9 z2 t12 t14 r19 r18 r12 r11 r10 r8 t8 t9 t13 t10 r14 t11 t5 t6 r5 t4 z1 r15 t15 r16 r1 r2 r4 c1 r6 t7 t3 t1 t2 r3 r7
utc 78LXX linear int egrat ed ci rcuit utc unisonic technologies co., ltd. 2 qw-r101-001,d absolute maximum ratings (operating temperature range applies unless otherwise specified) parameter symbol min. max. unit input voltage (for vo=5~9v) (for vo=12~24v) v i v i 30 35 v v output current io 100 ma power dissipation sop-8 to-92 sot-89 pd 300 625 350 mw operating junction temperature range t opr -20 +150 c storage temperature range t stg -55 +150 c utc78l05 electrical characteristics (vi=10v, io=40ma, 0 c utc 78LXX linear int egrat ed ci rcuit utc unisonic technologies co., ltd. 3 qw-r101-001,d parameter symbol test conditions min typ. max unit output noise voltage v n 10hz<=f<=100khz 49 uv temperature coefficient of vo vo/t io=5ma 0.75 mv/ c ripple rejection rr 10v<=v i <=20v,f=120hz, tj=25 c 40 46 db dropout voltage vd tj=25 c 1.7 v utc78l08 electrical characteristics (vi=14v,io=40ma,0 c utc 78LXX linear int egrat ed ci rcuit utc unisonic technologies co., ltd. 4 qw-r101-001,d utc78l12 electrical characteristics (vi=19v,io=40ma,0 c utc 78LXX linear int egrat ed ci rcuit utc unisonic technologies co., ltd. 5 qw-r101-001,d utc78l18 electrical characteristics (vi=27v,io=40ma,0 c utc 78LXX linear int egrat ed ci rcuit utc unisonic technologies co., ltd. 6 qw-r101-001,d application circuit utc78LXX 1 2 3 c0 0.1 f c1 0.33 f vi vo note 1: to specify an output voltage, substitute voltage value for "xx". note 2: bypass capacitors are recommended for optimum stability and transient response and should be located as close as possible to the regulators.
utc 78LXX linear int egrat ed ci rcuit utc unisonic technologies co., ltd. 7 qw-r101-001,d typical performance characteristics fig.1 ambient temperature vs. power dissipation fig.2 utc78l05 output voltage vs.ambient temperature fig.3 utc78l12 output voltage vs. ambient temperature 25 50 75 100 400 500 600 700 ambient temperature(c) power dissiaption(mw) ambient temperature(c) -50 0 50 100 output volatge(v) 4.8 4.9 5.0 5.1 5.2 ambient temperature(c) -50 0 50 100 11.7 to-92 sot-89 fig.4 output characteristics (ip=0ma,tj=25c) fig.6 short circuit output current (tj=25c) fig.7 utc78l12/24 quiescent current vs output current (tj=25c) fig.8 utc78l05 quiescent current vs. input voltage (io=0ma,tj=25c) 11.8 11.9 12.0 12.1 output volatge(v) input voltage(v) 010 2030 40 output voltage(v) 0 10 5 15 20 25 utc78l24 utc78l12 utc78l05 fig.5 utc78l05 dropout characteristics (tj=25c) 5 4.1 4.5 output voltage(v) input voltage(v) 6.0 6.5 7.0 io=0ma i o=40ma io=1 0 0 m a input-outputvoltage difference(v) 010 2030 40 short circuit current(ma) 100 200 300 400 500 output current (ma) 020 80 40 60 100 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 quiescent current (ma) utc78l24 utc78l12 input voltage(v) 010 2030 40 quiescent current (ma) 0 1 2 3 4 fig.9 peak output current vs dropout voltage difference input-output voltage difference(v) 010 2030 40 peak output current(ma) 100 200 300 400 (tj=25 ) (tj=0 ) (tj=150 ) 300 sop-8
utc 78LXX linear int egrat ed ci rcuit utc unisonic technologies co., ltd. 8 qw-r101-001,d fig.10 dropout voltage 0 25 50 100 1.0 1.5 2.0 2.5 junction temperature (c) input output differentional (v) 0.5 dropout conditions ? v out =2% of v out 75 125 i out =1.0ma i out =40ma i out =70ma
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