2009. 1. 7 1/4 revision no : 1 semiconductor technical data KIA1112S/f bipolar linear integrated circuit 1a 1.2v low dropout voltage regulator the kia1112 series is low drop voltage regulator able to provide up to 1a of output current. the device has been optimized for low output voltage (1.2v). dropout is guaranteed at a maximum 1.4v at the maximum output current, decreasing at lower loads. the device is supplied in sot-223, dpak. features low dropout voltage very low quiescent current : 2.5 /typ. output current up to 1a internal current and thermal limit output voltage tolerance of 2% at 25 ? operating junction temperature range : -40 ??- 150 ? a minimum of 10 t for stability + _ 6.5 0.2 + _ + _ + _ a sot-223 l k g j h d f e b c 0.26+0.09/-0.02 10 max 0.1 max 1.75 0.25 3.0+0.15/-0.1 2.3 typ 7 0.3 0.7+0.15/-0.1 1.8 max 3.5 0.2 dim millimeters h e b j f f g k l c d a 1. gnd (adj.) 2. output 3. input 1 2 3 heat sink is common to 2 (output) line up dpak dim millimeters a b c d f h i j k l 6.60 0.2 6.10 0.2 5.0 0.2 1.10 0.2 2.70 0.2 2.30 0.1 1.00 max 2.30 0.2 0.5 0.1 2.00 0.20 0.50 0.10 e 0.91 0.10 m 0.90 0.1 o a c d b e k i j q h f f m o p l 123 1. gnd (adj.) 2. output 3. input 1.00 0.10 p 0.95 max q + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ + _ heat sink is common to 2 (output) maximum ratings (ta=25 ) characteristic symbol rating unit input voltage v in 10 v output current i out 1 a power dissipation 1 (no heatsink) s (note) p d1 1.0 w f 1.3 power dissipation 2 (infinite heatsink) s p d2 8.3 w f 13 operating junction temperature t opr -40 150 storage temperature t stg -65 150 item output voltage (v) package KIA1112S 1.2 sot-223 kia1112f dpak note) package mounted on fr-4 pcb 36 18 1.5 . : mounting pad for the gnd lead min. 6
2009. 1. 7 2/4 revision no : 1 v in v in 10 f v out v out gnd 10 f v in v in v out v out 10 f 10 f gnd 1 3 ? KIA1112S/f fig.1 application circuit-1 electrical characteristics KIA1112S/f (unless other wise noted, tj=-40~150 ) characteristic symbol test conditions min. typ. max. unit output voltage v out1 v in =v out +1.5v, i out =10ma, tj=25 1.176 1.2 1.224 v v out2 10ma i out 1a, v out +1.5v v in 10v 1.164 1.2 1.236 line regulation reg line v out +1.5v 2009. 1. 7 3/4 revision no : 1 KIA1112S/f 00.8 1 0.2 0.4 0.6 fig. 4 v out (change) - t j 0 125 25 50 100 output voltage change (%) junction temperature t ( c) j 2 0 1 3 4 6 5 quiescent current i q (a) output current i out (a) dropout voltage v d (v) fig. 3 v d - i out 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 75 150 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 junction temperature t j ( c) junction temperature t j ( c) junction temperature t j ( c) i out =0a fig.7 i q - t j 25 -30 125 100 75 50 0 ripple rejection r.r(db) 100 k 10k 1k 10 frequency f (hz) 100 v = v +3v 0.5 2009. 1. 7 4/4 revision no : 1 KIA1112S/f ambient temperature ta ( c) -25 0 50 100 150 power dissipation p d (w) ambient temperature ta ( c) power dissipation p d (w) fig.9 p d - ta (as-type : sot-223) thermal resistance j-c 15 j-a 125 c/w fig.10 p d - ta (af-type : dpak) 2 4 6 8 10 0 12 0 150 50 100 3 0 6 9 15 12 thermal resistance j-c 9.62 j-a 96.2 c/w
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