elektronische bauelemente sja1117b 1.0a low dropout positive adjustable or fixed-mode regulator 06-jul-2015 rev. a page 1 of 3 http://www.secosgmbh.com/ any changes of specification will not be informed i ndividually. rohs compliant product a suffix of -c specifies halogen free description the sja1117b-xxx is a series of low dropout three-terminal regulators with a dropout of 1.15v(t yp.) at 1a output current. the sja1117b-xxx series providescurrent limiting an d thermal shutdown. its circuit includes a trimmed bandgap. reference to assure output voltage accuracy to be within 1.5%. c urrent limit is trimmed to ensure specified. output current and controlled short-circuit current. on-chip thermal shutdown provides protecti on against any combination of overload and ambient temperature tha t would create excessive junction temperature. the sja1117b-xxx ha s an adjustable version, that can provide the output voltage from 1 .25v to 5v with only 2 external resistors. features low dropout voltage: 1.15v(typ.) at 1a output curre nt trimmed current limit on-chip thermal shutdown three-terminal adjustable or fixed 1.8v, 2.5v, 3.3v , 5v operation junction temperature: 0 to 125 applications pc motherboard nic/switch telecom modem adsl modem printer and other peripheral equipment package information package mpq leader size sot-89 1k 7 inch aboslute maximum ratings (t a =25c unless otherwise noted) parameter symbol value unit input voltage v i 20 v thermal resistance from junction to ambient r ja 250 c /w lead temperature (soldering, 10sec.) t l 260 c esd voltage (machine model) v esd 400 c maximum junction temperature t j 150 c storage temperature t stg -55~+150 c note: stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, and functional of the device at these or any other conditions beyond those indicated und er recommended operating conditions is not implied. exposure to absolute maximum ratin gs for extended periods may affect device reliabil ity. millimeter millimeter ref. min. max. ref. min. max. a 4.4 0 4.6 0 g 0.40 0.58 b 3 . 94 4.25 h 1.50 typ c 1.40 1.60 j 3.00 typ d 2.25 2.60 k 0.32 0.52 e 1.50 1.85 l 0.35 0.44 f 0.89 1.20 sot-89 a e c d b k h f g l j 1 2 3 4 1. adj/gnd 2. output 3. in
elektronische bauelemente sja1117b 1.0a low dropout positive adjustable or fixed-mode regulator 06-jul-2015 rev. a page 2 of 3 http://www.secosgmbh.com/ any changes of specification will not be informed i ndividually. recommended operating conditions parameter symbol value unit input voltage v i 15 v operating junction temperature t j 0~+125 c functional block diagram typical application circuit
elektronische bauelemente sja1117b 1.0a low dropout positive adjustable or fixed-mode regulator 06-jul-2015 rev. a page 3 of 3 http://www.secosgmbh.com/ any changes of specification will not be informed i ndividually. electrical characteristics (v in 10v, t j =25c unless otherwise specified ) parameter symb ol part no test conditions min. typ. max unit i out =10ma, v in -v out =3.23 1.231 1.250 1.269 reference voltage v iroc sja1117b -adj 10ma i out 1a, 2.75v v in -v out 13.25v 1.225 1.250 1.275 v i out =10ma, v in =3.8v 1.773 1.8 1.827 sja1117b -1.8 10ma i out 1a, 3.3v v in 12v 1.764 1.8 1.836 v i out =10ma, v in =4.5v 2.463 2.5 2.538 sja1117b -2.5 10ma i out 1a, 4v v in 12v 2.450 2.5 2.550 v i out =10ma, v in =5.3v 3.251 3.3 3.350 sja1117b -3.3 10ma i out 1a, 4.8v v in 12v 3.234 3.3 3.366 v i out =10ma, v in =7.0v 4.925 5.0 5.075 output voltage v o sja1117b -5.0 10ma i out 1a, 6.5v v in 12v 4.9 5.0 5.1 v sja1117b -adj i out =10ma, 1.5v v in -v out 12v - 0.035 0.2 % sja1117b -1.8 i out =10ma, 1.5v v in -v out 10.2v - 1 7 sja1117b -2.5 i out =10ma, 1.5v v in -v out 9.5v - 1 7 sja1117b -3.3 i out =10ma, 1.5v v in -v out 8.7v - 1 7 line regulation lnr sja1117b -5.0 i out =10ma, 1.5v v in -v out 7v - 1 10 mv sja1117b -adj - 0.2 0.4 % sja1117b -1.8 - - 7.2 sja1117b -2.5 - - 10 sja1117b -3.3 - - 13.2 load regulation ldr sja1117b -5.0 v in -v out =1.5v, 10ma i out 1a - - 20 mv dropout voltage v d v ref =1%, i out =1.0a - - 1.3 v current limit i limit v in -v out =2v 1 - - a adjust pin current - 60 120 a minimum load current i l 1.5v v in -v out 12v (adj only) - 1.7 5 a quiescent current i q v in = v out +1.25v(adj except) - 5 10 ma ripple rejection rr f=120hz,c out =22 ftantalum, v in -v out =3v, i out =1a 60 75 - db temperature stability - 0.5 - % long-term stability t a =125 , 1000hrs c - 0.3 - % rms output noise (% of vout) t a =25c , 10hz f 10khz - 0.003 - % thermal shutdown hysteresis - 25 - c note: with package soldering to copper area over backside ground plane or internal power plane r ja can vary from 46 c /w to >90c /w depending on mounting technique and the size of the copper area
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