revision 1/4/2010 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com.cn ? page 1 description the se5167 is an efficient linear voltage regulator. it has extra low dropout voltage. at light loads the typical dropout voltage is 15mv, at full load the typical dropout voltage is 380mv. the output voltage accuracy is better than 2%. the se5167 has low ground current at 65ua, so it can help prolong battery life. the se5167 is specially designed for hand-held, battery-powered devices. features ? typical 175mv dropout voltage at 150ma. ? low ground current at 65ua. (typ.) ? guaranteed 300ma output over the full operating temperature range. ? extremely tight load and line regulation. ? low temperature coefficient. ? current and thermal limiting. ? no-load stability. ? available in sot-23-3l and to-92 packages. applications ? cd/dvd-rom, cd/rw ? wireless lan card, keyboard, mouse ? battery powered equipments ? pcmcia card ordering/marking information package ordering information marking information 3.3v se5167ahn-lf se5167ahn yyww-lf 2.8v se5167bhn-lf se5167bhn yyww-lf 2.5v se5167chn-lf se5167chn yyww-lf 1.8v SE5167DHN-LF se5167dhn yyww-lf 1.5v se5167ehn-lf se5167ehn yyww-lf 3.0v se5167fhn-lf se5167fhn yyww-lf 3.3v se5167ahg-lf se5167ahg yyww-lf 2.8v se5167bhg-lf se5167bhg yyww-lf 2.5v se5167chg-lf se5167chg yyww-lf 1.8v se5167dhg-lf se5167dhg yyww-lf 1.5v se5167ehg-lf se5167ehg yyww-lf 3.0v se5167fhg-lf se5167fhg yyww-lf yy: year code ww: week code. lf: lead free.
revision 1/4/2010 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com.cn ? page 2 ordering/marking info rmation (continued) package ordering information marking information 3.3v se5167aln-lf 16 7an_ 2.8v se5167bln-lf 16 7bn_ 2.5v se5167cln-lf 16 7cn_ 1.8v se5167dln-lf 16 7dn_ 1.5v se5167eln-lf 16 7en_ 3.0v se5167fln-lf 16 7fn_ 3.3v se5167alg-lf 16 7ag_ 2.8v se5167blg-lf 16 7bg_ 2.5v se5167clg-lf 16 7cg_ 1.8v se5167dlg-lf 16 7dg_ 1.5v se5167elg-lf 16 7eg_ 3.0v se5167flg-lf 16 7fg_ starting with 1, a bar on top of 1 is for production year 2001, and underlined 1 is for year 2002. the next character is marked on top for 2003, and underlined for 2004. the naming pattern continues with consecutive charac ters for later years. the last character is the week code. ( a-z: 1-26, a-z: 27-52) a dot on top right corner is for lead-free process. lf: lead free.
revision 1/4/2010 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com.cn ? page 3 absolute maximum ratings (1) supply input voltage (vin) ..??...?????....+6v power dissipation (pd) ???.. internally limited (3) junction temperature (tj) ??.?.... 0c to +125c lead temperature (solderi ng, 5 sec.) ?....?. 260c storage temperature (ts) ???.. -40c to +150c operating ratings (2) supply input voltage (vin) ??...?.. +2.8v to +6v junction temperature (tj) ??.?.. 0c to +125c package thermal resistance 160c/w (to-92) 250c/w (sot-23-3l) electrical characteristics v in = 5v; c in = 2.2f; c out = 2.2f electrolytic capacitor ; i out = 10ma; t j = 25c, unless otherwise specified. symbol parameter conditions min typ max units v out output voltage accuracy se5167 ? 1.5v(v in =1.8v,i out =1ma) se5167 ? 1.8v(v in =3.3v,i out =10ma) se5167-2.5v se5167-2.8v se5167-3.0v se5167-3.3v 1.470 1.764 2.450 2.744 2.940 3.234 1.5 1.8 2.5 2.8 3.0 3.3 1.530 1.836 2.550 2.856 3.060 3.366 v ? v out / ? t output voltage temperature coefficient note 4 -- 0.025 -- mv/ ? v out / v out line regulation v in = (v out +0.8)v or 2.5v to 5.5v -- 1.0 -- %/v ? v out / v out load regulation (5) v in = (v out +0.8)v or 2.5v i out =1ma to 300ma -- 0.003 -- %/ma i out =10ma -- 15 -- i out =150ma -- 175 -- v in - v out dropout voltage (6) i out =300ma -- 380 -- mv thermal protection temperature -- 150 -- t protection thermal protection protection hysterisys -- 20 -- psrr ripple rejection f =120hz -- 59 -- db i ground ground current i out =10ma -- 65 -- ua i limit current limit v out =0v -- 600 -- ma
revision 1/4/2010 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com.cn ? page 4 typical application note 1: exceeding the absolute maximum rating may damage the device. note 2: the device is not guaranteed to f unction outside its operating rating. note 3: the maximum allowable power dissipation at any ta (ambient temperature) is calculated using: p d(max) = (t j(max) - t a )/ ja . exceeding the maximum allowable power dissipation wi ll result in excessive die temperature, and the regulator will go into thermal shutdown. see table 1 and the ?thermal considerations? section for details. note 4: output voltage temperature coefficient is the worst-case voltage change divided by the total temperature range. note 5: regulation is measured at constant junction temperatur e using low duty cycle pulse testing. parts are tested for load regulation in the load range from 100a to 300m a. changes in output voltage due to heating effects are covered by the thermal regulation specification. note 6: dropout voltage is defined as the input to output differ ential at which the output voltage drops 2% below its nominal value measured at 1v differential. note 7: the cin or cout should be chosen carefully. please refer to the application hints
revision 1/4/2010 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com.cn ? page 5 line regulation (vout = 3.3v) (vin = 4.3v to 6v, iout = 1ma) 3.0000 3.1000 3.2000 3.3000 3.4000 3.5000 3.6000 4.2 4.7 5.2 5.7 vin (v) vout (v) load regulation (vout = 3.3v) (vin = 5v, iout = 1ma to 500ma) 3.000 3.100 3.200 3.300 3.400 3.500 3.600 0 100 200 300 400 500 iout (ma) vout (v) output voltage vs temperature (vin = 5v, iout = 10ma) 3.270 3.280 3.290 3.300 3.310 3.320 3.330 0 20 40 60 80 100 120 temperature (c) vout (v) iq vs iout (vout = 3.3v) (vin = 5v, iout = 10ma to 500ma) 0 20 40 60 80 100 120 140 160 0 100 200 300 400 500 iout (ma) iq (ua) psrr (vout = 3.3) (vin = 5v, vpp = 1v) 0 10 20 30 40 50 60 70 100 1000 10000 frequency (hz) psrr (db) transient response (v out = 1.5v) (i out = 1ma to 150ma)
revision 1/4/2010 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com.cn ? page 6 application hints like any low dropout regulator, se5167 requires external capacitors to ensure stability. the external capacitors must be carefully selected to ensure the performances. input capacitor: an input capacitor of at le ast 2.2uf is required. the inexpensive electrolytic capacitor is preferred. the value can be increased without upper limit. output capacitor: an output capacitor is requi red for look stability. it must be located no more than 1cm away from the v out pin, and connected directly between v out and gnd pins. the inexpensive electrolytic capacitor is recommended. the minimum value is 2.2uf but once again its value can be increased without limit. thermal consideration it is important that the thermal limit of the package should not be exceeded. the se5167 has built-in thermal protection. when the thermal limit is exceeded, the ic will enter protection, and the v out will be reset to zero. the power dissipation for a given application can be calculated as follows: the power dissipation (p d ) is p d = i out * [v in ? v out ] the thermal limit of the package is then limited to p d(max) = [t j ? t a ]/ ja where t j is the junction temperature, t a is ambient temperature, and ja is around 250c/w for se5167. se5167 is designed to enter thermal protection at 150c. for example, if t a is 25c then the max p d is limited to about 0.5w. in other words, if i out(max) = 300ma, then [v in ? v out ] can not exceed 1.67v.
revision 1/4/2010 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com.cn ? page 7 outline drawing sot-23-3l (sc-59) outline drawing to-92 b c a d e f j g h k l mi n max mi n max a 0.110 0.120 2.80 3.04 b 0.047 0.055 1.20 1.40 c 0.083 0.104 2.10 2.64 d 0.035 0.040 0.89 1.03 e 0.070 0.080 1.7 8 2.0 5 f 0.018 0.024 0.4 5 0.60 g 0.015 0.020 0.37 0.51 h 0.0005 0.004 0.013 0.10 j 0.034 0.040 0.887 1.0 2 k 0.003 0.007 0.085 0.1 8 l - 0.027 - 0.69 dim n inches mm dimensions a b d e g f h k j mi n max mi n max a 0.175 0.205 4.445 5.207 b 0.170 0.210 4.318 5.334 e 0.500 0.610 12.70 15.50 f 0.016 0.021 0.407 0.533 g 0.045 0.055 1.143 1.397 h 0.095 0.105 2.413 2.667 j 0.080 0.105 2.032 2.667 k 0.125 0.165 3.175 4.191 di m n i nches mm di mensi ons
revision 1/4/2010 preliminary and all contents are subject to change without prior notice. ? seaward electronics, inc., 2006. ? www.seawardinc.com.cn ? page 8 customer support seaward electronics incorporated ? china section b, 2nd floor, shangdi scientific office complex, #22 xinxi road haidian district, beijing 100085, china tel: 86-10-8289-5700/01/05 fax: 86-10-8289-5706 seaward electronics corporation ? taiwan 2f, #181, sec. 3, minquan east rd, ta i p e i , ta i w a n r . o . c tel: 886-2-2712-0307 fax: 886-2-2712-0191 seaward electronics incorporated ? north america 1512 centre pointe dr. milpitas, ca95035, usa tel: 1-408-821-6600 last updated - 1/4/2010
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