revision 9/26/2012 preliminary and all contents are subject to change without prior notice ? sea ward electronics inc., 2006. ? www.seawardinc.com .cn ? page 1 low power low noise ldo cmos voltage regulator se5 509 description the se5509 series of fixed output low dropout linear regulators are designed for portable battery powered applications, which require low power consumption, low noise environment, and low dropout voltage. each device con tains a bandgap voltage reference, an error amplifier, a pmos power transistor, and resistors for setting output voltage, and current limit and temperature limit protection circuits. the se5509 has been designed to be used with low cost capacitors and requ ires a minimum output capacitor of 1.0f. the output voltages range from 1.3v to 4.4v in 100mv increments. standard voltage versions are 1.5, 1.8, 2.5, 2.8, 3.0, and 3.3v. features ? typica l 200 mv dropo ut voltage at 150ma. ? fast enable tur n - on time of 20s (typ.) ? excellent line and load regulation. ? high accuracy output voltage of 2%. ? ultra - low ground current at 20a (typ.) ? disable current less than 0.1a (typ.) ? over current and thermal protection. ? no reverse current. ? standard sot - 23- 5 l and tsop - 5 package. pin configuration 5 1 2 3 4 sot-23-5l / tsop-5 (top view) vin vout bypass gnd enable application ? usb removable devices ? mpeg4 devices ? wireless lan?s ? hand - held instrumentation. ? portable dvd players ? digital camera b lock diagram ordering information se5509 _ _ _ pin (1=>5): g: v in /gnd/en/bypass/v out package: l: sot - 23- 5 l / tsop - 5 output voltage: a: v out = 3.3v b: v out = 2.8v c: v out = 2.5v d: v out = 1.8v e: v out = 1.5v f: v out = 3.0v
revision 9/26/2012 preliminary and all contents are subject to change without prior notice ? sea ward electronics inc., 2006. ? www.seawardinc.com .cn ? page 2 low power low noise ldo cmos voltage regulator se5 509 absolute maximum rating (1) parameter symbol value units input voltage v in 6 v enable voltage v en - 0.3 to v in v output voltage v out - 0. 3 to 4.6 v power dissipation p d internally limited (3) output short circuit duration infinite thermal resistance, junction - to - ambient ja 230 c/w lead temperature (soldering, 5 sec.) 260 c junction temperature t j 0 to +150 c storage temperature t s - 40 to +150 c operating rating (2) parameter symbol value units supply input voltage range v in 5 .5 v junction temperature range t j 0 to +125 c electrical characteristics v in = 5 v; v en =v in ; c in = 2.2 f; c out = 2.2 f; i out = 10ma; t j = 25c; unless otherwise noted symbol parameter conditions min typ max unit v out output voltage accuracy se5 509 ? 1.5 (v in = 1.8 v) se5 509 ? 1.8 (v in =3 .3v) se5 509 ? 2.5 se5 509 ? 2.8 se5 509 ? 3.0 se5 509 ? 3.3 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 line regulation v in = ( v out + 0.8) v to 5.5v -- 0. 2 -- % /v v out load regulation (5) v in = ( v out + 0.8) v or 2.5 v i out = 10ma to 300ma -- 2.0 -- % ordering/marking information package ordering information marking information 5 1 2 3 4 sot-23-5l / tsop-5 (top view) vin vout bypass gnd enable 3.3v se5509alg - lf 509 a l z start ing with 9 , a bar on top of 9 is for production year 200 5 , and underlined 9 is for year 200 6 . the naming pattern continues with consecutive characters 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. 2.8v se5509blg - lf 509 blz 2.5v se5509clg - lf 509 clz 1.8v se5509dlg - lf 509 dlz 1.5v se5509elg - lf 509 elz 3.0v se5509flg - lf 509 flz
revision 9/26/2012 preliminary and all contents are subject to change without prior notice ? sea ward electronics inc., 2006. ? www.seawardinc.com .cn ? page 3 low power low noise ldo cmos voltage regulator se5 509 note 1: exceeding the absolute maximum rating may damage the device. note 2: the device is not guaranteed to function outside its operating rating. note 3: the maximum allowable power dissipation at a ny t a (ambient temperature) is calculated using: p d(max) = (t j(max) ? t a )/ ja . exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. see ?thermal consideration? section for details note 4: output voltage temperature coefficient is the wors t case voltage change divided by the total temperature range. note 5: regulation is measured at constant junction temperature using low duty cycle pulse testing. parts are tested for load regulation in the load range from 0.1ma to 300ma. changes in outpu t voltage due to heating effects are covered by the thermal regulation specification. note 6: dropout voltage is defined as the input to output differential at which the output voltage drops 100mv below its nominal value measured at 0.8 v differential. electrical characteristics (continued) v in = 5 v; c in = 2.2 f; c out = 2.2 f; i out = 10ma; t j = 25c; unless otherwise noted symbol parameter conditions min typ max unit v out /t output voltage temperature coefficient note 4 -- 0.1 -- m v /c v in ? v out dropout voltage (6) (v out > 3.0 v) i out = 10ma -- 8 -- mv i out = 150ma -- 200 -- i out = 30 0ma -- 3 5 0 -- t protection thermal protection thermal protection temperature -- 150 -- c protection hysterisys -- 20 -- psrr ripple rejection f =10khz ,i out =50ma,c bypass =0.1 f -- 70 -- db i q quiescent current v en = 0 .4 v -- 0.1 -- a v en = v in -- 20 -- v th(en) enable input threshold voltage voltage raising , output turns on, logic high 1.6 -- -- v voltage falling , output turns off, logic low -- -- 0.4 i limit current limit -- 5 00 -- ma
revision 9/26/2012 preliminary and all contents are subject to change without prior notice ? sea ward electronics inc., 2006. ? www.seawardinc.com .cn ? page 4 low power low noise ldo cmos voltage regulator se5 509 line regulation (iout=10ma) 3.15 3.20 3.25 3.30 3.35 3.40 3.60 4.10 4.60 5.10 vin (v) vout (v) load regulation (vin=4.3v) 3.15 3.20 3.25 3.30 3.35 3.40 0 100 200 300 400 iout (ma) vout (v) iq vs. iout(vout=3.3v) 20 22 24 26 28 30 32 0 50 100 150 200 250 300 350 iout (ma) iq ( a) iq vs. vin(vout=3.3v) 25.0 25.5 26.0 26.5 27.0 27.5 3.6 4.0 4.4 4.8 5.2 5.6 vin (v) iq ( a) 0 10 20 30 40 50 60 70 80 0.1 1 10 100 psrr (db) frequency (khz) psrr (vin=vout+1v+0.5vp - pac iout=50ma cbypass=0.1 f) inp ut transient response (vout = 3.3 v) ( vin=3.6v to 5.0v ) load transient response (vout = 3.3 v) ( iout=10ma to 300ma )
revision 9/26/2012 preliminary and all contents are subject to change without prior notice ? sea ward electronics inc., 2006. ? www.seawardinc.com .cn ? page 5 low power low noise ldo cmos voltage regulator se5 509 application hints like any low dropout regulator, se5509 requires external capacitors to ensure stability. the external capacitors must be carefully selected to ensure performance. thermal considerations it is important that the thermal limit of the package is not exceeded. the se5509 has built - in thermal protection. when the thermal limit is exceeded, the ic will enter protection, and v out will be pulled to ground. the power dissipation for a given application can be calculated as following: 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, ta is the ambient temperature, and ja is around 230c/w for se5509. se5509 is designed to enter thermal protection at 150c. for example, if t a is 25c then the maximum p d is limited to about 0.6w. in oth er words, if i out(max) = 300ma, then [v in ? v out ] cannot exceed 2v. input capacitor an input capacitor of at least 1f is required. ceramic or tan talum can be used. the value can be increase without upper limit. output capacitor an output capacitor is required for stability. it must be placed no more than 1 cm away from the v out pin, and connected directly between v out and g nd pins. e lectrolytical c apacitor is recommended. the minimum value is 1f but may be increase without limit. ceramic can be used. but t he value should not be more than 2.2 f. application diagram
revision 9/26/2012 preliminary and all contents are subject to change without prior notice ? sea ward electronics inc., 2006. ? www.seawardinc.com .cn ? page 6 low power low noise ldo cmos voltage regulator se5 509 o utline drawing sot - 23- 5l outline drawing tsop - 5 b k a f d e c h j min max min max a 0.110 0.120 2.80 3.05 b 0.059 0.070 1.50 1.75 c 0.036 0.051 0.90 1.30 d 0.014 0.020 0.35 0.50 e - 0.037 - 0.95 f - 0.075 - 1.90 h - 0.006 - 0.15 j 0.0035 0.008 0.090 0.20 k 0.102 0.118 2.60 3.00 dim n inches mm dimensions b k a f d e c h j min max min max a 0.110 0.120 2.80 3.05 b 0.059 0.070 1.50 1.75 c 0.036 0.040 0.90 1.00 d 0.014 0.020 0.35 0.50 e - 0.037 - 0.95 f - 0.075 - 1.90 h - 0.006 - 0.15 j 0.0035 0.008 0.090 0.20 k 0.102 0.118 2.60 3.00 dim n inches mm dimensions
revision 9/26/2012 preliminary and all contents are subject to change without prior notice ? sea ward electronics inc., 2006. ? www.seawardinc.com .cn ? page 7 low power low noise ldo cmos voltage regulator se5 509 customer support seaward electronics incorporated ? china section b, 2nd floor, shangdi scientific office complex, #22 xinxi road haidian district, beijin g 100085, china tel: 86 - 10- 8289 - 5700 /01/05 fax: 86 - 10- 8289 - 5706 seaward electronics corporation ? taiwan 2f, #181, sec. 3, min q uan east rd, taipei, taiwan r.o.c tel: 886 - 2 - 2712 - 0307 fax: 886 - 2 - 2712 - 0191 seaward electronics incorporated ? north america 151 2 centre pointe dr. milpitas, ca95035, usa tel: 1 - 408- 821 - 6600 last updated - 9/26/2012
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