ap131 300ma low dropout linear regulator with shutdown ap131 rev. 7 1 of 7 february 2009 www.diodes.com ? diodes incorporated lead-free ? input voltage range is from 2.7 to 5.5v ? dropout voltage 400mv at 300ma output current ? guaranteed 300ma output current ? internal ron = 1.5 ? pmos draws no base current ? low quiescent current 50a ? output voltage: 1.5v/1.8v/2.0v/2.5v/2.8v/ ? 2.9v/3.0v/3.3v/ 3.5v; accuracy 2% ? active low shutdown function (en pin) ? fast transient response ? good load regulation ? current limit and thermal shutdown protection ? short circuit current fold-back ? lead free package: sot25 ? sot25: available in ?green? molding compound (no br, sb) ? lead free finish/rohs compliant (note 1) the ap131 is a 300ma, fixed output voltage, low dropout linear regulator. the device included pass element, error amplifier, band-gap, current limit and thermal shutdown circuitry. the device is on when the en pin is set to logic high level. the characteristics of low dropout voltage and less quiescent current make it good for some critical current applications, for example, some battery powered devices. the typical quiescent current is approximately 50a from zero to maximum load. due to the internal flexible design, it results in extensively fixed output voltage versions and makes it convenient to use for applications. built-in current-limit and thermal-shutdown functions prevent any fault condition from ic damage. an external capacitor can be connected to the bp pin and reduce the output noise. applications ? battery powered device ? wireless communication ? cd-rom, dvd, and lan card ? pc peripheral ordering information output voltage package packing w : sot25 lead free g : green 7 : tape & reel l : lead free ap131 - xx w x - 7 15 :1.5v 18 :1.8v 20 :2.0v 25 :2.5v 28 :2.8v 29 :2.9v 30 :3.0v 33 :3.3v 35 :3.5v device package code packaging (note 2) 7? tape and reel quantity part number suffix ap131-xxwl-7 w sot25 3000/tape & reel -7 AP131-XXWG-7 w sot25 3000/tape & reel -7 notes: 1. eu directive 2002/95/ec (rohs). all applicable rohs exemptions applied. please visit our website at http://www.diodes.com/products/lead_free.html . 2. pad layout as shown on diodes inc. suggested pad layout document ap02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf . features general description
ap131 300ma low dropout linear regulator with shutdown ap131 rev. 7 2 of 7 february 2009 www.diodes.com ? diodes incorporated pin assignment ( top view ) sot25 3 2 5 4 1 in en bp out pin description block diagram current limit thermal shutdown - + in out gnd 1.08v error amp bandgap enable bp en pin name description in input voltage gnd ground en enable pin bp band-gap out output voltage
ap131 300ma low dropout linear regulator with shutdown ap131 rev. 7 3 of 7 february 2009 www.diodes.com ? diodes incorporated absolute maxi mum ratings symbol parameter rating unit v cc input voltage +6 v t op operating junction temperature range -40 to +125 oc t st storage temperature range -65 to +150 oc p d power dissipation, p d @ t a = 25oc sot25 250 mw recommended oper ating conditions symbol parameter min max unit v in input voltage 2.7 5.5 v i out output current 0 300 ma t a operating ambient temperature -40 85 c
ap131 300ma low dropout linear regulator with shutdown ap131 rev. 7 4 of 7 february 2009 www.diodes.com ? diodes incorporated electrical characteristics t a = 25oc, c in = 1f, c out = 10f, unless otherwise specified. symbol parameter conditions min typ. max unit v drop dropout voltage (note 3) i l = 300ma - 400 500 mv i limit current limit (note 4) v in = 5v, v out = 0v 350 450 - ma i short short circuit current v out < 1.05v - 150 300 ma v line line regulation i out =1ma, v in =( v out +1v ) to 5.5v - 0.1 0.3 %/v v load load regulation (note 5) i l = 1~300ma, v in = 5v - 30 35 mv v out output voltage accuracy i l = 1ma, v in = 5v -2 - +2 % output voltage temperature coefficient (note 6) - 50 150 ppm/ oc psrr ripple rejection f = 100hz, c in = 1 f, c o = 10uf, i l = 100ma - 60 - db i sb standby current i l = 0ma, v in = 5v, en = 0v - - 5 a i q quiescent current i l = 0ma, v in = 5v, en = 5v - 50 100 a i en enable pin current - - < 0.1 a v enon enable pin voltage output on 1.5 - v in v v enoff output off 0 - 0.8 v t delay enable delay time c bp = 0.1 f, c out = 1 f, i out = 30ma - 8 - s ja thermal resistance junction-to-ambient sot25 (note 7) 163 o c/w jc thermal resistance junction-to-case sot25 (note 7) 53 o c/w notes: 3. dropout voltage is defined as the input to output differential vo ltage. dropout is measured at constant junction temperature by using pulsed on time, and the criterion is v out inside target value 2%. this test is skipped at the condition of v in <3v. 4. current limit is measured at constant junction temperature by using pulsed testing with a low on time. 5. regulation is measured at constant junction temperature by using pulsed testing with a low on time. 6. guaranteed by design. 7. test conditions for sot25: device mounted on fr-4 substrate pc board, 2oz copper, with minimum recommended pad lay out.
ap131 300ma low dropout linear regulator with shutdown ap131 rev. 7 5 of 7 february 2009 www.diodes.com ? diodes incorporated typical characteristics ap131 psrr vs. frequency 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 10 100 1k 10k 100k 1m fre q uenc y ( hz ) psrr (db) ap131 v out vs. load current 3.02 3.025 3.03 3.035 3.04 3.045 3.05 3.055 3.06 3.065 3.07 3.075 3.08 3.085 3.09 3.095 0 30 60 90 120 150 180 210 240 270 300 330 load current ( ua ) v out ap131 gnd current vs. input voltage 0 5 10 15 20 25 30 35 40 45 50 55 00.511.522.533.544.555.56 input voltage (v) gnd current (ua) ap131 dropout vs. load 0 50 100 150 200 250 300 350 400 450 0 50 100 150 200 250 300 load (io) (ma) dropout (v) v out =3.3v typical application circuit in out gnd ap131 bp en en v in c in c bp c out v out on off 1uf 0.1uf 10uf
ap131 300ma low dropout linear regulator with shutdown ap131 rev. 7 6 of 7 february 2009 www.diodes.com ? diodes incorporated marking information (1) sot25 1 2 3 5 7 4 xx y w x xx : identification code w : week : a~z : 1~26 week; x : a~z : lead free ( top view ) y : year 0~9 a~z : 27~52 week; z represents 52 and 53 week a~z : green part number package identification code ap131-15w sot25 da ap131-18w sot25 dd ap131-20w sot25 df ap131-25w sot25 dk ap131-28w sot25 dn ap131-29w sot25 do ap131-30w sot25 dp ap131-33w sot25 ds ap131-35w sot25 du package information (all dimensions in mm)
ap131 300ma low dropout linear regulator with shutdown ap131 rev. 7 7 of 7 february 2009 www.diodes.com ? diodes incorporated important notice life support diodes incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or ot her changes without further notice to any product herein. diodes incorporated does not assume any liability arising out of the application or use of any pr oduct described herein; neither does it convey any license under its patent rights, nor the rights of others. the user of products in such applications shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on our website, harmless against all dam ages. diodes incorporated products are not authorized for use as critical components in life support devices or systems without the e xpressed written approval of the president of diodes incorporated.
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