date: oct4-06 spx52 300ma low dropout voltage regulator ? 2006 sipex corporation spx1521 features % output accuracy 3.3v, 5v, at 300ma output very low quiescent current 0.3v (typ.) dropout voltage at 300ma extremely tight load and line regulation current & thermal limiting reverse battery protection equivalent replacement for lt52 the spx52 is a low power voltage regulator. this device is an excellent choice for use in battery- powered applications such as cordless telephones, radio control systems, and portable computers. the spx52 features very low quiescent current and very low dropout voltage. this includes a tight initial tolerance of 1% max, and very low output temperature coeffcient, making the spx1521 useful as a low-power voltage reference. the spx1521 is offered in 3 pin to-252, sot-223, to-220 & to-263 packages. 300ma low dropout voltage regulator now available in lead free packaging description + 2.2f + spx1521 i in i g i l 5v in out gnd load i in = i l + i g v out 0.1f typical applications circuit 1 2 3 spx1521 3 pin to -263 gnd v in v out s o l v e d b y t m
2 date: oct4-06 spx52 300ma low dropout voltage regulator ? 2006 sipex corporation power dissipation ........................................................ internally limited lead temp. (soldering, 5 seconds) .............................................. 260c storage temperature range ......................................... -65c to +50c operating junction temperature range ...................... -40c to +25c input supply voltage ................................................... -20v to +20v absolute maximum ratings parameter conditions typ min max units (note 2) 3.3v version o utput voltage 3.3 3.267 3.333 v m a i l 300 ma 3.3 3.217 3.382 r everse output current v out = 3.3v, v in = 0v 6 25 a 5.0v v ersion output voltage 5.0 4.950 5.050 v m a i l 300 ma 5.0 4.880 5.120 r everse output current v out = 5.0v, v in = 0v 6 25 a all voltage options output voltage 20 100 ppm/c temperature coeffcient (note1) line regulation 6v v in 20v (note 4) 1.5 20 mv load regulation (note 3) i l = to 300ma 4 20 mv 30 dropout voltage (note 5) i l = ma 0. 3 0. 7 v 0.25 i l =300ma 0.30 0.55 0.70 ground current i l = ma 100 150 a i l = 0ma 350 500 i l =50ma 1.5 3 ma i l = 00ma 2 6 i l =300ma 5 14 current limit v out =0 330 500 ma ripple rejection v in -v out = v(avg), 58 50 db v ripple =0.5vp-p, f ripple =20hz, i load =50ma input reverse leakage current v in = -20v, v out =0v 1.0 ma note 1: output or reference voltage temperature coeffcients defned as the worst case voltage change divided by the total temperature range. note 2: unless otherwise specifed all limits are guaranteed for t j = 25c, v in = 6v, i l = ma and c l = 2.2f. note 3: regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. changes in output voltage due to heating effects are covered under the specifcation for thermal regulation. note 4: line regulation for the spx52 is tested at 25c for i l = ma. for t j = 25c, line regulation is guaranteed by design. note 5: dropout voltage is defned as the input to output differential at which the output voltage drops 100 mv below its nominal value measured at v differential. shutdown input voltage ................................................... -0.6v to +6.5v esd rating ................................................................................ 2kv min electrical characteristics electrical characteristics at v in = 6v, i o = ma, c out = 2.2f, t a = 25c, unless otherwise specifed. boldface applies over the full operating temperature range.
3 date: oct4-06 spx52 300ma low dropout voltage regulator ? 2006 sipex corporation external capacitors the stability of the spx 52 requires a 2.2f or greater capacitor between output and ground. oscillation could occur without this capacitor. most types of tantalum or aluminum electrolytic works fne here. for operations of below -25c solid tantalum is recommended since the many aluminum types have electrolytes that freeze at about -30c. the esr of about 5? or less and resonant frequency above 500khz are the most important parameters in the value of the capacitor. the capacitor value can be increased without limit. the spx1521, unlike other low dropout regulators will remain stable and in regula - tion with no load in addition to the internal voltage divider. this feature is especially important in applications like cmos ram keep-alive. if there is more than 0 inches of wire be - tween the input and the ac flter capacitor, or if a battery is used as the input, then a 0.f tantalum or aluminum electrolytic capacitor should be placed from the input to the ground. reducing output noise it may be an advantage to reduce the ac noise present at the output. one way is to re - duce the regulator bandwidth by increasing the size of the output capacitor. increasing the capacitor from f to 220f only de - creases the noise from 430v to 60vrms for a 100khz bandwidth at 5v output. application information top view spx1521 1 3 2 sot-223 (m3) top view to-263-3 (t ) 1 spx1521 2 3 front view to-220-3 (u ) spx1521 1 2 3 front view to-252 (r ) 3 2 1 v in gnd v out v out gnd v in v out gnd v in v out gnd v in pinouts note: tab is connected to gnd thermal resistance (theta ja) sot-223 ------62.3oc/w to-262 ------3.4oc/w to-220 ------29.4oc/w to-252 ------50.0oc/w
4 date: oct4-06 spx52 300ma low dropout voltage regulator ? 2006 sipex corporation package: 3 p in to-263
5 date: oct4-06 spx52 300ma low dropout voltage regulator ? 2006 sipex corporation package: 3 p in to-220
6 date: oct4-06 spx52 300ma low dropout voltage regulator ? 2006 sipex corporation package: 3 p in to-252
7 date: oct4-06 spx52 300ma low dropout voltage regulator ? 2006 sipex corporation package: 3 p in sot223
8 date: oct4-06 spx52 300ma low dropout voltage regulator ? 2006 sipex corporation sipex corporation reserves the right to make changes to any products described herein. sipex does not assume any liability arising out of the ap - plication or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. sipex corporation headquarters and sales offce 233 south hillview drive milpitas, ca 95035 tel: (408) 934-7500 fax: (408) 935-7600 ordering information part number accuracy output voltage package spx1521m3-3-3 % 3.3v 3-pin sot-223 spx1521m3-3-3/tr % 3.3v 3-pin sot-223 spx1521m3-5-0 % 5.0v 3-pin sot-223 spx1521m3-5-0/tr % 5.0v 3-pin sot-223 spx52r-3-3 % 3.3v 3-pin to-252 spx52r-3-3/tr % 3.3v 3-pin to-252 spx52r-5-0 % 5.0v 3-pin to-252 spx52r-5-0/tr % 5.0v 3-pin to-252 spx 52 t-3-3 % 3.3v 3-p in to-263 spx 52 t-3-3 /tr % 3.3v 3-p in to-263 spx52 t-5-0 % 5.0v 3-pin to-263 spx52 t-5-0/tr % 5.0v 3-pin to-263 spx 52 u-3-3 % 3.3v 3-p in to-220 spx52u-5-0 % 5.0v 3-pin to-220 available in lead free packaging. to order add "-l" suffx to part number. example: spx52 t-3-3/tr = standard; spx52 t-l-3-3/tr = lead free /tr = tape and reel pack quantity is 500 for to-263; 2,000 for to-252; and 2,500 for sot-223. to-220 is not available in tape & reel. s o l v e d b y t m
|
