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date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation general description the s p1085 is a series of low dropout positive voltage regulators with a maximum dropout of 1.5v at 3a of load current. the series features on-chip thermal shutdown. it also includes a bandgap reference and a current limiting circuit. the s p1085 is available in 1.5v, 1.8v, 2.5v, 2.85v, 3.3v, 5.0v and adjustable versions. the fixed versions integrate the adjust resistors. the adjustable version can set the output voltage with two external resistors. the s p1085 series is available in standard packages of to-263-3l, to-220 and to-252. features g low dropout v oltage: t ypical 1.3v at 3a g current limiting and thermal protection g output current: 3a g current limit: 4.5a g operating junction t emperature: 0 to 125 o c g line regulation: 0.015% (t ypical) g load regulation: 0.1% (t ypical) g available in rohs compliant, lead free packaging applications g high efficiency linear regulators g battery charger g post regulation for switching supplies g microprocessor supply g mother board power supplies g dvd - v ideo player g t elecom equipment g set t op b oxes and w eb box modul ar suppli es figure . package t ypes of sp085 to-252 to-220 to-263-3l to-220 input output adj/gnd 1 2 3 sp1085 3a low dropout linear regulator solved by tm
2 date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation figure 2. pin configuration of sp085 (top view) pin configuration functional block diagram figure 3. functional block diagram of s p085 v package (to-220) v 1 package (to-263-3l) input output adj/gnd 1 2 3 1 2 3 adj/gnd output v 2 package (to-252) 1 2 3 adj/gnd output input input thermal protection + - for adjustable output, disconnect a and a2, connect b input output adj/ gnd a a2 b for fixed output, connect a and a2, disconnect b
3 date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation note 1: stresses greater than those listed under "absolute maximum ratings" may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under"recommended operating conditions" is not implied. exposure to "absolute max- imum ratings" for extended periods may affect device reliability. recommended operating conditions parameter symbol min max unit operating junction temperature t j 150 o c storage temperature t s -65 150 o c lead temperature (soldering, 10 sec.) t lead 300 o c esd (human body model) esd 2000 v parameter symbol min max unit input voltage v in 12 v operating junction temperature range t j 0 125 o c absolute maximum ratings (note 1)
4 date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation electrical characteristics parameter symbol conditions min t yp max unit reference v oltage v ref sp1085-adj, i out =10ma,v in -v out = 3v , t j = 25 o c, 10ma d i out d 3a, 1.5v d v in - v out d 5v 1.238 1.225 1.250 1.250 1.262 1.275 v output v oltage v out sp1085-1.5, i out =0ma, v in = 4.5v , t j = 25 o c, 10ma d i out d 3a, 3.1v d v in d 6v 1.485 1.47 1.5 1.5 1.515 1.53 v sp1085-1.8, i out = 0ma, v in = 4.8v , t j = 25 o c, 10ma d i out d a, 3.4v d v in d 7v 1.782 1.764 1.8 1.8 1.818 1.836 v sp1085-2.5, i out = 0ma, v in = 5.5v , t j = 25 o c, 10ma d i out d 3a, 4.1v d v in d 7v 2.475 2.45 2.5 2.5 2.525 2.55 v sp1085-2.85, i out = 0ma, v in = 6v , t j = 25 o c, 10ma d i out d 3a, 4.5v d v in d 8v 2.821 2.793 2.85 2.85 2.879 2.907 v sp1085-3.3, i out = 0ma, v in = 6.3v , t j = 25 o c, 10ma d i out d 3a, 4.9v d v in d 8v 3.267 3.234 3.3 3.3 3.333 3.366 v sp1085-5.0, i out = 0ma, v in = 8v , t j = 25 o c, 10ma d i out d 3a, 6.6v d v in d 10v 4.95 4.9 5 5 5.05 5.1 v line regulation ' v out sp1085-adj, i out = 10ma, 2.85v d v in d 10v 0.015 0.035 0.2 0.2 % sp1085-1.5, i out = 10ma, 3.1v d v in d 10v 0.5 1 6 6 mv sp1085-1.8, i out = 10ma, 3.4v d v in d 10v 0.5 1 6 6 mv sp1085-2.5, i out = 10ma, 4.1v d v in d 10v 0.5 1 6 6 mv sp1085-2.85, i out = 10ma, 4.5v d v in d 10v 0.5 1 6 6 mv sp1085-3.3, i out = 10ma, 4.9v d v in d 10v 0.5 1 6 6 mv t ypicals and limits appearing in normal type apply for t j = 25 o c. limits appearing in boldface type apply over the entire operating junction temperature range 0 to 125 o c.
5 date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation electrical characteristics (continued) parameter symbol conditions min t yp max unit sp1085-5.0, i out = 10ma, 6.6v d v in d 10v 0.5 1 10 10 mv load regulation ' v out sp1085-adj, 0ma d i out d 3a, v in - v out = 3v 0.1 0.2 0.3 0.4 % sp1085-1.5, 0ma d i out d 3a, v in - v out = 3v 3 7 15 20 mv sp1085-1.8, 0ma d i out d 3a, v in - v out = 3v 3 7 15 20 mv sp1085-2.5, 0ma d i out d 3a, v in - v out = 3v 3 7 15 20 mv sp1085-2.85, 0ma d i out d 3a, v in - v out = 3v 3 7 15 20 mv sp1085-3.3, 0ma d i out d 3a, v in - v out = 3v 3 7 15 20 mv sp1085-5.0, 0ma d i out d 3a, v in - v out = 3v 5 10 20 35 mv dropout v oltage i o = 3a, ' v ref , ' v out = 1% 1.3 1.5 v current limit i limit v in - v out = 3v , 3.2 minimum load current v in = 10v (sp1085-adj) 3 10 ma quiescent current v in = 10v (sp1085) 5 10 ma ripple rejection f ripple = 120hz, c out = 25 p f t antalum, i out = 3a, v in - v out = 3v 60 72 db adjust pin current v in = 4.25v, i out = 10ma 55 120 p a adjust pin current change 10ma d i out d a, 1.5v d v in -v out d 6v 0.2 5 p a long t erm stability t a = 125 o c, 1000hrs 0.5 % t emperature stability i out = 10ma, v in - v out = 1.5v 0.5 % rms noise (% of v out ) t a = 25 o c, 10hz d f d 10khz 0.003 % thermal resistance junction-to-case t jc 3 3 o c / w t ypicals and limits appearing in normal type apply for t j = 25 o c. limits appearing in boldface type apply over the entire operating junction temperature range 0 to 125 o c. to-263 to-220 to-2 52 4.5 a 4
6 date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation typical performance characteristics figure 4. line regulation vs. temperature figure 6. dropout voltage vs. temperature 0 25 50 75 00 25 .00 .05 .0 .5 .20 dropout voltage (v) t a ( o c) 0 25 50 75 00 25 2.47 2.48 2.4 2.50 2.5 2.52 2.53 output voltage (v) t a ( o c) figure 7. output voltage vs. temperature 0 25 50 75 00 25 - 0 2 3 4 5 line regulation (mv) t a ( o c) 0 25 50 75 00 25 -5 -4 -3 -2 - 0 2 3 4 5 load regulation (mv) t a ( o c) figure 5. load regulation vs. temperature
7 date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation typical performance characteristics (continued) figure0. reference voltage vs. temperature figure 8. short circuit current vs. dropout voltage 0 2 4 6 8 0 2 0 2 3 4 5 6 7 short circuit current (a) dropout voltage (v) 0 25 50 75 00 25 .20 .2 .22 .23 .24 .25 .26 .27 .28 reference voltage (v) t a ( o c) figure . load transient response 0.0 0.5 .0 .5 2.0 2.5 3.0 0.80 0.85 0.0 0.5 .00 .05 .0 .5 .20 .25 .30 dropout voltage (v) output current (a) figure . dropout voltage vs. output current
8 date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation figure 2. line t ransient response t ypical performance characteristics (continued) figure 3. t ypical applications of sp085 s p 1085-adj v in v out adj v in 10 p f tantalum 120 : r2 22 p f tantalum + + + + v in s p 1085-5.0 v in v out gnd 10 p f tantalum 22 p f tantalum v out v out r1 v out =v ref * (+r2/r) + i adj * r2 t ypical application applica tion informa tion
date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation p ackage: 3 pin to-263 mechanical dimensions (continued) unit: mm(inch) 7 e 3 e 7 e 8.640(0.340) .650(0.380) 0.0(0.03) 0.50(0.020) 2.540(0.00) .50(0.045) .650(0.380) 3 e 4.760(0.58) 8.840(0.348) 2.640(0.04) 0.020(0.00) 8 e 2 e 0 e 6 e 0.380(0.05) 2.30(0.04) 0.360(0.04) 2.200(0.087) 70 e 0.20(0.405) 4.070(0.60) 4.820(0.0) .30(0.055) .50(0.045) .30(0.055) 2.540(0.00) .270(0.050) .30(0.055) 2.60(0.06) 5.740(0.620) 0.250(0.00) 2.700(0.06) 0.400(0.06) 5.600(0.220) 7.420(0.22) 7.80(0.34) 2.540(0.00) 2.540(0.00) to-263-3l
0 date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation mechanical dimensions (continued) to-252 unit: mm(inch) e 7 e .400(0.055) 0.020(0.00) 0.460(0.08) 2.240(0.088) 0.650(0.026) .500(0.374) 0.750(0.030) 0.640(0.025) 5.230(0.206) 6.380(0.25) 2.600(0.02) 5.360(0.2) 2.80(0.086) 0.600(0.024) 5 e 5 e 8 e 0.400(0.06) 0.50(0.020) 0.480(0.0) .080(0.043) h 45 e 6.680(0.263) 0.580(0.023) 2.380(0.04) 5.430(0.24) 0.50(0.037) 0.00(0.38) 2.340(0.02) 2.240(0.088) 2.340(0.02) 0.780(0.03) 0.850(0.033) .760(0.06) 5.560(0.2) .320(0.052) 0.540(0.02) 0.20(0.005) 3.000(0.8) 2.0 e 3.0 e 2.0 e 3.0 e p ackage: 3 pin to-252
date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation mechanical dimensions unit: mm(inch) ? 3.560(0.40) 4.230(0.560) .60(0.046) 0.83(0.032) 8.763(0.345) 2.540(0.00) 0.356(0.04) 2.080(0.082) 3 e 7 e 3.560(0.40) 7 e .660(0.380) 0.550(0.022) 60 e 0.38(0.05) 2.580(0.02) 6 0 e 8.520(0.335) ? .500(0.05) 0.200(0.008) .850(0.073) 2.540(0.00) 0.38(0.05) 0.406(0.06) 3.380(0.33) 0.660(0.420) 4.060(0.60) .350(0.053) 27.880(.08) 30.280(.2) .520(0.375) 6.50(0.650) 4.820(0.0) 2.880(0.3) .760(0.06) to-220 p ackage: 3 pin to-220
2 date: 7/24/06 rev h sp085 3 a low dropout linear regulator ? 2006 sipex corporation circuit t ype package v 2 : to-252 adj: adjustable output 1.5: fixed output 1.5v 1.8: fixed output 1.8v 2.5: fixed output 2.5v 3.3: fixed output 3.3v 5.0: fixed output 5.0v - l : lead free s p1085 / tr : t ape and reel blank: t ube v: to-220 v 1 : to-263-3 2.85: fixed output 2.85v typical performance characteristics (continued) figure0. reference voltage vs. temperature figure 8. short circuit current vs. dropout voltage 0 2 4 6 8 0 2 0 2 3 4 5 6 7 short circuit current (a) dropout voltage (v) 0 25 50 75 00 25 .20 .2 .22 .23 .24 .25 .26 .27 .28 reference voltage (v) t a ( o c) figure . load transient response 0.0 0.5 .0 .5 2.0 2.5 3.0 0.80 0.85 0.0 0.5 .00 .05 .0 .5 .20 .25 .30 dropout voltage (v) output current (a) figure . dropout voltage vs. output current sipex corporation headquarters and sales offce 233 south hillview drive milpitas, ca 5035 tel: (408) 34-7500 fax: (408) 35-7600 ordering informa tion sipex corporation reserves the right to make changes to any products described herein. sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. solved by tm part number voltage range voltage accuracy temperature range package pin count pack qty sp1085v2-l/tr adj 2% 0oc to +125oc to-252 3 2,500/tr sp1085v2-l-1-5/tr 1.5v 2% 0oc to +125oc to-252 3 2,500/tr sp1085v2-l-1-8/tr 1.8v 2% 0oc to +125oc to-252 3 2,500/tr sp1085v2-l-2-5/tr 2.5v 2% 0oc to +125oc to-252 3 2,500/tr sp1085v2-l-2-85/tr 2.85v 2% 0oc to +125oc to-252 3 2,500/tr sp1085v2-l-3-3/tr 3.3v 2% 0oc to +125oc to-252 3 2,500/tr sp1085v2-l-5-0/tr 5v 2% 0oc to +125oc to-252 3 2,500/tr sp1085v1-l/tr adj 2% 0oc to +125oc to-263 3 800/tr sp1085v1-l-1-5/tr 1.5v 2% 0oc to +125oc to-263 3 800/tr sp1085v1-l-1-8/tr 1.8v 2% 0oc to +125oc to-263 3 800/tr sp1085v1-l-2-5/tr 2.5v 2% 0oc to +125oc to-263 3 800/tr sp1085v1-l-2-85/tr 2.85v 2% 0oc to +125oc to-263 3 800/tr sp1085v1-l-3-3/tr 3.3v 2% 0oc to +125oc to-263 3 800/tr sp1085v1-l-5-0/tr 5v 2% 0oc to +125oc to-263 3 800/tr sp1085v-l adj 2% 0oc to +125oc to-220 3 50/tube sp1085v-l-1-5 1.5v 2% 0oc to +125oc to-220 3 50/tube sp1085v-l-1-8 1.8v 2% 0oc to +125oc to-220 3 50/tube sp1085v-l-2-5 2.5v 2% 0oc to +125oc to-220 3 50/tube sp1085v-l-2-85 2.85v 2% 0oc to +125oc to-220 3 50/tube sp1085v-l-3-3 3.3v 2% 0oc to +125oc to-220 3 50/tube sp1085v-l-5-0 5v 2% 0oc to +125oc to-220 3 50/tube

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