ap131 300ma low dropout linear regulator with shutdown this datasheet contains new product information. anachip corp. re serves the rights to modify the product specification without notice. no liability is assumed as a result of the use of this product. no rights under any patent accompany the sale of the product. rev. 1.5 nov 07, 2005 1/8 ? features - input voltage range is up to 7v - dropout voltage 400mv at 300ma output current - guaranteed 300ma output current. - internal r on =1.5 ? pmos draws no base current - low quiescent current 50a - output voltage: 1.5v/1.8v/2.0v/2.5v/2.8v/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 - sot89-5l ,sot23-5l and tsot23-5l pb-free package ? applications - wireless communication - battery powered device - cd-rom, dvd, and lan card - pc peripheral ? general descriptions 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 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 application, for example, some battery powered devices. the typical quiescent current is approximately 50a from zero to maximum load. due to internal flexible design, result in extensively fixed output voltage versions and make 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. ? pin assignments (top view) sot23-5l/tsot23-5l 3 2 5 4 1 in gnd en bp out sot89-5l (top view) 3 2 1 5 4 in gnd en bp out ? pin descriptions name description in input voltage gnd ground en enable pin bp bandgap out output voltage
ap131 300ma low dropout linear regulator with shutdown anachip corp. www.anachip.com.tw rev. 1.5 no v 07, 2005 2/8 ? ordering information ap131 xx x x y : sot89-5l w : sot23-5l output voltage package packing blank:tube a : taping 15 : 1.5v 18 : 1.8v 20 : 2.0v 25 : 2.5v 28 : 2.8v 30 : 3.0v 33 : 3.3v 35 : 3.5v tw:tsot23-5l ? block diagram current limit thermal shutdown - + in out gnd 1.08v error amp bandgap enable bp en ? absolute maximum ratings symbol parameter rating unit v cc input voltage -0.1 to +7 v t op operating junction temperature range -40 to +125 oc t st storage temperature range -65 to +150 oc power dissipation, p d @t a =25oc sot89-5l +0.5 w p d sot23-5l / tsot23-5l +0.25 w package thermal resistance sot89-5l +100 oc/w ja sot23-5l / tsot23-5l +250 oc/w
ap131 300ma low dropout linear regulator with shutdown anachip corp. www.anachip.com.tw rev. 1.5 no v 07, 2005 3/8 ? 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 1) i l =300ma - 400 500 mv i limit current limit (note 2) 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 l =1ma, v in =5~7v - 0.1 0.3 %/v ? v load load regulation (note 3) i l =1~300ma, v in =5v - 30 35 mv output voltage accuracy i l =1ma, v in =5v -2 - +2 % ? v out output voltage temperature coefficient (note 4) - 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 output on 1.5 - v in v v enoff enable pin voltage 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 note 1. dropout voltage is defined as the input to output differential voltage. dropout is measured at constant junction temperature b y 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. note 2. current limit is measured at constant junction temperature by using pulsed testing with a low on time. note 3. regulation is measured at constant junction temperature by using pulsed testing with a low on time. note 4. guaranteed by design. ? 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 anachip corp. www.anachip.com.tw rev. 1.5 no v 07, 2005 4/8 ? typical characteristics ap131 psrr v.s. 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) psrr v.s. frequency ap131 vout v.s. 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 ) vout (v) vout v.s. load current ap131 gnd current v.s. 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) gnd current v.s. input voltage ap131 dropout v.s. load 0 0.05 0.1 0.15 0.2 0.25 0.3 0 50 100 150 200 250 300 350 load (io) (ma) dro p out ( v ) dropout v.s. load
ap131 300ma low dropout linear regulator with shutdown anachip corp. www.anachip.com.tw rev. 1.5 no v 07, 2005 5/8 ? marking information xx : identification code (see appendix) y : year: 0-9 m : month: a~l sot23-5l xx y m 7 12 3 4 5 sot89-5l 1 3 2 x x y m 5 4 (top view) xx : identification code (see appendix) y : year: 0-9 m : month: a~l xx : identification code (see appendix) y : year: 0-9 m : month: a~l tsot23-5l xx y m 7 12 3 4 5 appendix part number sot23-5/tsot23-5 sot89-5 identification code ap131-15w ap131-15y da ap131-18w ap131-18y dd ap131-20w AP131-20Y df ap131-25w ap131-25y dk ap131-28w ap131-28y dn ap131-30w ap131-30y dp ap131-33w ap131-33y ds ap131-35w ap131-35y du
ap131 300ma low dropout linear regulator with shutdown anachip corp. www.anachip.com.tw rev. 1.5 no v 07, 2005 6/8 ? package information (1) package type: sot89-5l d c a i h g e b ff k j l 0.5 1.1 1.5 4.6 1.2 0.55 land pattern recommendation (unit: mm) 1.7 0.4 dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 4.40 4.50 4.60 0.173 0.177 0.181 b 4.05 4.15 4.25 0.159 0.163 0.167 c 1.50 1.60 1.70 0.059 0.063 0.067 d 1.30 1.40 1.50 0.051 0.055 0.059 e 2.40 2.50 2.60 0.094 0.098 0.102 f 0.80 - - 0.031 - - g 3.00 ref. 0.118 ref. h 1.50 ref. 0.059 ref. i 0.40 0.46 0.52 0.016 0.018 0.020 j 1.40 1.50 1.60 0.055 0.059 0.063 k 0.35 0.39 0.43 0.014 0.015 0.017 l 5 o typ. 5 o typ.
ap131 300ma low dropout linear regulator with shutdown anachip corp. www.anachip.com.tw rev. 1.5 no v 07, 2005 7/8 ? package information (continued) (2) package type: sot23-5l l e e he d a2 a1 b(5x) a view c l1 1(4x) 2(4x) e1 gauge plane c see view c dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 1.05 - 1.35 0.041 - 0.053 a1 0.05 - 0.15 0.002 - 0.006 a2 1.00 1.10 1.20 0.039 0.043 0.047 b 0.25 - 0.50 0.010 - 0.020 c 0.08 - 0.20 0.003 - 0.008 d 2.70 2.90 3.00 0.106 0.114 0.118 e 1.50 1.60 1.70 0.059 0.063 0.067 he 2.60 2.80 3.00 0.102 0.110 0.118 l 0.30 - 0.60 0.012 - 0.024 l1 0.50 0.60 0.70 0.020 0.024 0.028 e 1.80 1.90 2.00 0.071 0.075 0.079 e1 0.85 0.95 1.05 0.033 0.037 0.041 0 o 5 o 10 o 0 o 5 o 10 o 1 3 o 5 o 7 o 3 o 5 o 7 o 2 6 o 8 o 10 o 6 o 8 o 10 o
ap131 300ma low dropout linear regulator with shutdown anachip corp. www.anachip.com.tw rev. 1.5 no v 07, 2005 8/8 ? package information (continued) (3) package type: tsot23-5l e1 e e e1 b d a a1 a2 y 2 4x 1 l1 r l c l2 gauge plane dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a 0.75 - 0.90 0.030 - 0.035 a1 0.00 - 0.10 0.000 - 0.004 a2 0.70 0.75 0.80 0.028 0.030 0.031 b 0.35 - 0.51 0.014 - 0.020 c 0.10 - 0.25 0.004 - 0.010 d 2.80 2.90 3.00 0.110 0.114 0.118 e 2.60 2.80 3.00 0.102 0.110 0.118 e1 1.50 1.60 1.70 0.059 0.063 0.067 e 0.95 bsc. 0.037 e1 1.90 bsc. 0.075 l 0.37 - - 0.015 - - l1 0.60 ref. 0.024 l2 0.25 bsc. 0.010 y - - 0.10 - - 0.004 r 0.10 - - 0.004 - - 0 o - 8 o 0 o - 8 o 1 7 o nom. 7 o nom. 2 5 o nom. 5 o nom.
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