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ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 1 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , features ? u p to 1a output current ? 70ua operating supply current ? excellent line regulation: 0.05%/v ? low dropout: 3 5 0 mv@ 1 a (vout=3.3v) ? high power supply rejection ratio ? wide operating voltage range: 2.5v to 6.0v ? 1v to 5v factory - preset output ? high accuracy: 1% or 2% ? built - in auto discharge function ? 500ma in - rush current limit ? fold - back current limit protection ? thermal shutdown protection ? dfn - 6, sot - 89 - 5, sot - 89 - 3, sot - 223 - 5, sot - 223 - 3, to - 263 - 3, to - 220 - 3, to - 252 - 3 and to - 252 - 5 package ? rohs compliant and 100% lead (pb) - free applications ? portable communication equipment ? battery - powered equipment ? laptop, palmtops, notebook computers ? hand - held instruments ? pcmcia cards and wireless lan ? elect rical appliances such as cameras, vcrs description the bl9110 is a low - dropout regulator that operates the input voltage from 2.5v to 6v and delivers 1a load current. the bl9110 is available in two types, either fixed or adjustable output voltage. the output voltage of the fixed types is preset at an internally trimmed voltage 1v, 1.2v, 1.3v, 1.5v, 1.8v, 2.5v, 2.7v, 2.8v, 2.85v, 3.0v, 3.2v, 3.3v, 5v or ca n be made with options of the output range from 1v to 5v in 50mv increments. the output range of adjustable types is from 1v to 5v. the bl9110 consists of a voltage reference, an error amplifier, resistor net for setting output voltage, a current limit cir cuit for over - current and a thermal - shutdown circuit. a standby mode with ultra low supply current can be realized with the chip enable function . since the packages for bl9110 are dfn - 6, sot - 89 - 5, sot - 223 - 5, sot - 223 - 3, to - 263 - 3, to - 220 - 3, sot - 89 - 3, to - 252 - 3, to92 - 3 and to - 252 - 5 with high power dissipation, high density mounting of the ic on board is possible. ordering information bl9110 - vvv x x xx typical application package: aa : dfn - 6 ba : sot - 89 - 5 - a bb: sot - 89 - 5 - b ca : to - 252 - 5 da : sot - 223 - 5 ea : to - 252 - 3 - a eb : to - 252 - 3 - b fa : sot - 223 - 3 - a fb : sot - 223 - 3 - b fc : sot - 223 - 3 - c fd : sot - 223 - 3 - d ga : to - 263 - 3 - a gb : to - 263 - 3 - b gc : to - 263 - 3 - c ha : to - 220 - 3 ia : sot - 89 - 3 - a ib : sot - 89 - 3 - b ic : sot - 89 - 3 - c ja:to92 - 3 features: p: standard (default, lead free) c: customized output voltage accuracy a: 1% b: 2% output voltage 100 :1. 0 v 120:1.2v 130:1.3v 150:1.5v 180:1.8v 250:2.5v 270:2.7v 280:2.8v 285:2.85v 300:3.0v 320:3.2v 330:3.3v 500:5.0v adj: adjustable b l 9 1 1 0 v d d g n d c e v o u t v d d c h i p e n a b l e c 2 2 . 2 u f v o u t c 1 1 0 u f
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 2 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , absolute maximum rating (note 1) input supply voltage (v dd ) - 0.3v to + 7 v ce input voltage - 0.3v to + 7v output voltage - 0.3v to v in +0.3v output current 1.4 a maximum junction temperature 125c operating temperature range (note2) - 40c to 85c storage temperature range - 65c to 125c lead temperature (soldering, 10s) 300c package information part number top mark temp range bl91 10 - vvvxxaa bl9110aa ywss vvv (note3) - 40c to +85c bl91 10 - vvvxxba/b bl9110ba/b ywss vvv - 40c to +85c bl91 10 - vvvxxca bl9110ca ywss vvv - 40c to +85c part number top mark temp range bl91 10 - vvvxxda bl9110da - 40c to +85c aa b a bb ca 6 4 5 d f n - 6 t o p v i e w v o u t g n d v d d m a r k i n g v o u t v d d c e 3 2 1 1 2 3 5 4 s o t - 8 9 - 5 t o p v i e w n c / a d j g n d c e v d d v o u t m a r k i n g 1 2 3 5 4 s o t - 8 9 - 5 t o p v i e w n c / a d j g n d c e v d d v o u t m a r k i n g t o - 2 5 2 - 5 t o p v i e w v o u t m a r k i n g g n d g n d c e v d d 2 3 4 5 1 s o t - 2 2 3 - 5 t o p v i e w v o u t m a r k i n g a d j g n d c e v d d 2 3 4 5 1 s o t - 2 2 3 - 3 t o p v i e w m a r k i n g 2 3 1 f a v o u t g n d v d d f b g n d v o u t v d d f c g n d v d d v o u t f d v d d g n d v o u t t o - 2 6 3 - 3 t o p v i e w m a r k i n g 1 2 3 g a g n d v o u t v d d g b g n d v d d v o u t g c v d d g n d v o u t
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 3 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , ywss vvv bl91 10 - vvvxxea/b bl9110ea/b ywss vvv - 40c to +85c bl91 10 - vvvxxfa/b/c/d bl9110fa/b/c/d ywss vvv - 40c to +85c bl91 10 - vvvxxga/b/c bl9110ga/b/c ywss vvv - 40c to +85c part number top mark temp range bl91 10 - vvvxxha bl9110ha ywss vvv - 40c to +85c bl91 10 - vvvxxi/a/b/c bl9110ia/b/c ywss vvv - 40c to +85c bl91 10 - vvvxx j a bl9110 j a ywss vvv - 40c to +85c d a h a s o t - 8 9 - 3 t o p v i e w m a r k i n g 2 3 i a g n d v o u t v d d i b g n d v d d v o u t i c v o u t g n d v d d 1 m a r k i n g g n d v d d v o u t t o 9 2 t o p v i e w j a 1 2 3
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 4 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , pin descriptions symbol description vout output pin gnd ground pin ce chip enable pin (high active) vdd input pin adj/nc adjustable/no connection vvv 100 120 130 285 495 500 adj voltage (v) 1.0 1.2 1.3 2.85 4.95 5.0 adjustable y 0 1 2 3 4 year 2010 2011 2012 2013 2014 w 01 2 26 27 28 52 week a b z thermal resistance (note 4 ) : package ? ja ? jc dfn - 6 95 ? c/w 10 ? c/w sot - 89 - 5 160 ? c/w 45 ? c/w to - 252 - 5 90 ? c/w 10 ? c/w sot - 223 - 5 160 ? c/w 20 ? c/w to - 252 - 3 90 ? c/w 10 ? c/w sot - 223 - 3 160 ? c/w 20 ? c/w to - 263 - 3 65 ? c/w 7 ? c/w to - 220 - 3 50 ? c/w 7 ? c/w sot89 - 3 180 ? c/w 50 ? c/w note 1: absolute maximum ratings are those values beyond which the life of a device may be impaired. note 2: the bl 9110 is guaranteed to meet performance specifications from 0c to 70c. specifications over the C 40c to 85c operating temperature range are assured by de s ign, characterization and correlation with statistical process controls. note 3 y: year of assembly manufacturing w: week of assembly manufacturing ss: lot id (the 7 th and 8 th number of lot numbers ) vvv: voltage code (for example 100 stands for 1.0v) note 4: thermal resistance is specified with approximately 1 square of 1 oz copper.
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 5 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , block d iagram vdd ce vout gnd soft-start fold-back current limit over temperature protection voltage reference power good detector voltage buffer logic control + - loop compensation adj ea + -
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 6 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , electrical characteristics (note 5 ) bl9110 - 1.2v electrical characteristics (v dd = 2.5v, v out =1.2v, ce= v dd , c in = 2.2 ? f , c out = 2.2 ? f, t a =25 c , unless otherwise noted.) parameter symbol conditions min typ max unit input voltage v dd 2 .5 6 v output voltage accuracy (note 6) ? out i out =1ma - 1 +1 % - 2 +2 current limit i lim 1.0 1.3 a short circuit current i scc v out = 0 250 m a quiescent current i q i out =0ma 70 120 u a standby current i stby v ce =gnd, shutdown 0.01 1 u a dropout voltage (note 7) v drop i out = 300m a 420 715 mv i out = 1 a 870 1310 line regulation (note 8 ) v line 2.5vv dd out =1 00 ma 0.05 0. 5 % /v load regulation (note 9 ) v load 1mai out (note 10 ) temperature coefficient tc vout i out =100ma - 40 c il shutdown 0.4 v logic high v ih start up 1. 0 v ce pull - down resistance r ce 5 m no 10hz to100khz, i out =1ma 45 u v rms power supply rejection ratio f=1khz (vout p - p ripple i out =10 0 ma 70 db f=1khz (vout>3.3v) 60 thermal shutdown temperature t sd shutdown, temp increasing 16 5 c thermal shutdown hysteresis t sdh y 3 0 c output discharge resistance r dsc 50 note 5: 100% production test at +25c. specifications over the temperature range are guaranteed by design and characterization. note 6: this ic includes two kinds of output voltage accuracy versions. a: 1%, b: 2%. note 7: the required minimum input operating voltage is equal to v out +v drop , and if v out +v drop <2.5v, the required minimum input operating voltage must be set to 2.5v. v out is the normal output voltage, e.g. v out =2.8v for 2.8v fixed output version. note 8 : line regulation is calculated by w here v out1 is the output voltage when v dd1 = 6.0 v, v out2 is the output voltage when v dd2 = max (v out +0.5v, 2.5v). v dd = v dd1 - v dd2 . note 9 : load regulation is calculated by w here v out1 is the output voltage when i out 1 =1ma, and v out2 is the output voltage when i out 2 =1 a . note 10: the temperature coefficient is calculated by 12 100 out out line dd out vv v vv ?? ? ? ? ? ?? ?? ?? 12 load out out v v v ? ? ? out out v out v tc tv ? ? ??
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 7 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , bl9110 - 1.5v electrical characteristics (v dd = 2.5v, v out =1.5v, ce= v dd , c in = 2.2 ? f , c out = 2.2 ? f, t a =25 c , unless otherwise noted.) parameter symbol conditions min typ max unit input voltage v dd 2 .5 6 v output voltage accuracy (note 6) ? out i out =1ma - 1 +1 % - 2 +2 current limit i lim 1.0 1.3 a short circuit current i scc v out = 0 250 m a quiescent current i q i out =0ma 70 120 u a standby current i stby v ce =gnd, shutdown 0.01 1 u a dropout voltage (note 7) v drop i out = 300m a 260 445 mv i out = 1 a 700 1050 line regulation (note 8 ) v line 2.5vv dd out =1 00 ma 0.05 0. 5 % /v load regulation (note 9 ) v load 1mai out (note 10 ) temperature coefficient tc vout i out =100ma - 40 c il shutdown 0.4 v logic high v ih start up 1. 0 v ce pull - down resistance r ce 5 m no 10hz to100khz, i out =1ma 45 u v rms power supply rejection ratio f=1khz (vout p - p ripple i out =10 0 ma 70 db f=1khz (vout>3.3v) 60 thermal shutdown temperature t sd shutdown, temp increasing 16 5 c thermal shutdown hysteresis t sdh y 3 0 c output discharge resistance r dsc 50 note 5: 100% production test at +25c. specifications over the temperature range are guaranteed by design and characterization. note 6: this ic includes two kinds of output voltage accuracy versions. a: 1%, b: 2%. note 7: the required minimum input operating voltage is equal to v out +v drop , an d if v out +v drop <2.5v, the required minimum input operating voltage must be set to 2.5v. v out is the normal output voltage, e.g. v out =2.8v for 2.8v fixed output version. note 8 : line regulation is calculated by w here v out1 is the output voltage when v dd1 = 6.0 v, v out2 is the output voltage when v dd2 = max (v out +0.5v, 2.5v). v dd = v dd1 - v dd2 . note 9 : load regulation is calculated by w here v out1 is the output voltage when i out 1 =1ma, and v out2 is the output voltage when i out 2 =1.0 a . note 10: the temperature coefficient is calculated by 12 100 out out line dd out vv v vv ?? ? ? ? ? ?? ?? ?? 12 load out out v v v ? ? ? out out v out v tc tv ? ? ??
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 8 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , bl9110 - 1.8v electrical characteristics (v dd = 2.8v, v out =1.8v, ce= v dd , c in = 2.2 ? f , c out = 2.2 ? f, t a =25 c , unless otherwise noted.) parameter symbol conditions min typ max unit input voltage v dd 2 .5 6 v output voltage accuracy (note 6) ? out i out =1ma - 1 +1 % - 2 +2 current limit i lim 1.0 1.3 a short circuit current i scc v out = 0 250 m a quiescent current i q i out =0ma 70 120 u a standby current i stby v ce =gnd, shutdown 0.01 1 u a dropout voltage (note 7) v drop i out = 300m a 180 308 mv i out = 1 a 570 855 line regulation (note 8 ) v line 2.5vv dd out =1 00 ma 0.05 0. 5 % /v load regulation (note 9 ) v load 1mai out (note 10 ) temperature coefficient tc vout i out =100ma - 40 c il shutdown 0.4 v logic high v ih start up 1. 0 v ce pull - down resistance r ce 5 m no 10hz to100khz, i out =1ma 45 u v rms power supply rejection ratio f=1khz (vout p - p ripple i out =10 0 ma 70 db f=1khz (vout>3.3v) 60 thermal shutdown temperature t sd shutdown, temp increasing 16 5 c thermal shutdown hysteresis t sdh y 3 0 c output discharge resistance r dsc 50 note 5: 100% production test at +25c. specifications over the temperature range are guaranteed by design and characterization. note 6: this ic includes two kinds of output voltage accuracy versions. a: 1%, b: 2%. note 7: the required minimum input operating voltage is equal to v out +v drop , and if v out +v drop <2.5v, the required minimum input operating voltage must be set to 2.5v. v out is the normal output voltage, e.g. v out =2.8v for 2.8v fixed output version . note 8 : line regulation is calculated by w here v out1 is the output voltage when v dd1 = 6.0 v, v out2 is the output voltage when v dd2 = max (v out +0.5v, 2.5v). v dd = v dd1 - v dd2 . note 9 : load regulation is calculated by w here v out1 is the output voltage when i out 1 =1ma, and v out2 is the output voltage when i out 2 =1.0 a . note 10: the temperature coefficient is calculated by 12 100 out out line dd out vv v vv ?? ? ? ? ? ?? ?? ?? 12 load out out v v v ? ? ? out out v out v tc tv ? ? ??
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 9 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , bl9110 - 2.5v electrical characteristics (v dd = 3.5v, v out =2.5v, ce= v dd , c in = 2.2 ? f , c out = 2.2 ? f, t a =25 c , unless otherwise noted.) parameter symbol conditions min typ max unit input voltage v dd 2 .5 6 v output voltage accuracy (note 6) ? out i out =1ma - 1 +1 % - 2 +2 current limit i lim 1.0 1.3 a short circuit current i scc v out = 0 250 m a quiescent current i q i out =0ma 70 120 u a standby current i stby v ce =gnd, shutdown 0.01 1 u a dropout voltage (note 7) v drop i out = 300m a 140 240 mv i out = 1 a 440 660 line regulation (note 8 ) v line 3.0vv dd out =1 00 ma 0.05 0. 5 % /v load regulation (note 9 ) v load 1mai out (note 10 ) temperature coefficient tc vout i out =100ma - 40 c il shutdown 0.4 v logic high v ih start up 1. 0 v ce pull - down resistance r ce 5 m no 10hz to100khz, i out =1ma 45 u v rms power supply rejection ratio f=1khz (vout p - p ripple i out =10 0 ma 70 db f=1khz (vout>3.3v) 60 thermal shutdown temperature t sd shutdown, temp increasing 16 5 c thermal shutdown hysteresis t sdh y 3 0 c output discharge resistance r dsc 50 note 5: 100% production test at +25c. specifications over the temperature range are guaranteed by design and characterization. note 6: this ic includes two kinds of output voltage accuracy versions. a: 1%, b: 2%. note 7: the required minimum input operating voltage is equal to v out +v drop , and if v out +v drop <2.5v, the required minimum input operating voltage mus t be set to 2.5v. v out is the normal output voltage, e.g. v out =2.8v for 2.8v fixed output version. note 8 : line regulation is calculated by w here v out1 is the output voltage when v dd1 = 6.0 v, v out2 is the output voltage when v dd2 = max (v out +0.5v, 2.5v). v dd = v dd1 - v dd2 . note 9 : load regulation is calculated by w here v out1 is the output voltage when i out 1 =1ma, and v out2 is the output voltage when i out 2 =1.0 a . note 10: the temperature coefficient is calculated by 12 100 out out line dd out vv v vv ?? ? ? ? ? ?? ?? ?? 12 load out out v v v ? ? ? out out v out v tc tv ? ? ??
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 10 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , bl9110 - 3.3v electrical characteristics (v dd = 4.3v, v out =3.3v, ce= v dd , c in = 2.2 ? f , c out = 2.2 ? f, t a =25 c , unless otherwise noted.) parameter symbol conditions min typ max unit input voltage v dd 2 .5 6 v output voltage accuracy (note 6) ? out i out =1ma - 1 +1 % - 2 +2 current limit i lim 1.0 1.3 a short circuit current i scc v out = 0 250 m a quiescent current i q i out =0ma 70 120 u a standby current i stby v ce =gnd, shutdown 0.01 1 u a dropout voltage (note 7) v drop i out = 300m a 110 188 mv i out = 1 a 350 525 line regulation (note 8 ) v line 3.8vv dd out =1 00 ma 0.05 0. 5 % /v load regulation (note 9 ) v load 1mai out (note 10 ) temperature coefficient tc vout i out =100ma - 40 c il shutdown 0.4 v logic high v ih start up 1. 0 v ce pull - down resistance r ce 5 m no 10hz to100khz, i out =1ma 45 u v rms power supply rejection ratio f=1khz (vout p - p ripple i out =10 0 ma 70 db f=1khz (vout>3.3v) 60 thermal shutdown temperature t sd shutdown, temp increasing 16 5 c thermal shutdown hysteresis t sdh y 3 0 c output discharge resistance r dsc 50 note 5: 100% production test at + 25c. specifications over the temperature range are guaranteed by design and characterization. note 6: this ic includes two kinds of output voltage accuracy versions. a: 1%, b: 2%. note 7: the required minimum input operating voltage is equal to v out +v d rop , and if v out +v drop <2.5v, the required minimum input operating voltage must be set to 2.5v. v out is the normal output voltage, e.g. v out =2.8v for 2.8v fixed output version. note 8 : line regulation is calculated by w here v out1 is the output voltage when v dd1 = 6.0 v, v out2 is the output voltage when v dd2 = max (v out +0.5v, 2.5v). v dd = v dd1 - v dd2 . note 9 : load regulation is calculated by w here v out1 is the output voltage when i out 1 =1ma, and v out2 is the output voltage when i out 2 =1.0 a . note 10: the temperature coefficient is calculated by . 12 100 out out line dd out vv v vv ?? ? ? ? ? ?? ?? ?? 12 load out out v v v ? ? ? out out v out v tc tv ? ? ??
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 11 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , bl9110 - 5.0v electrical characteristics (v dd = 6.0v, v out =5.0v, ce= v dd , c in = 2.2 ? f , c out = 2.2 ? f, t a =25 c , unless otherwise noted.) parameter symbol conditions min typ max unit input voltage v dd 2 .5 6 v output voltage accuracy (note 6) ? out i out =1ma - 1 +1 % - 2 +2 current limit i lim 1.0 1.3 a short circuit current i scc v out = 0 250 m a quiescent current i q i out =0ma 70 120 u a standby current i stby v ce =gnd, shutdown 0.01 1 u a dropout voltage (note 7) v drop i out = 300m a 100 170 mv i out = 1 a 340 510 line regulation (note 8 ) v line 5.5vv dd out =1 00 ma 0.05 0. 5 % /v load regulation (note 9 ) v load 1mai out (note 10 ) temperature coefficient tc vout i out =100ma - 40 c il shutdown 0.4 v logic high v ih start up 1. 0 v ce pull - down resistance r ce 5 m no 10hz to100khz, i out =1ma 45 u v rms power supply rejection ratio f=1khz (vout p - p ripple i out =10 0 ma 70 db f=1khz (vout>3.3v) 60 thermal shutdown temperature t sd shutdown, temp increasing 16 5 c thermal shutdown hysteresis t sdh y 3 0 c output discharge resistance r dsc 50 note 5: 100% production test at +25c. specifications over the temperature range are guaranteed by design and characterization. note 6: this ic includes two kinds of output voltage accuracy versions. a: 1%, b: 2%. note 7: the required minimum input operating voltage is equal to v out +v drop , and if v out +v drop <2.5v, the required minimum input operating voltage must be set to 2.5v. v out is the normal output voltage, e.g. v out =2.8v for 2.8v fixed output version. note 8 : line regulation is calculated by w here v out1 is the output voltage when v dd1 = 6.0 v, v out2 is the output voltage when v dd2 = max (v out +0.5v, 2.5v). v dd = v dd1 - v dd2 . note 9 : load regulation is calculated by w here v out1 is the output voltage when i out 1 =1ma, and v out2 is the output voltage when i out 2 =1.0 a . note 10: the temperature coefficient is calculated by . 12 100 out out line dd out vv v vv ?? ? ? ? ? ?? ?? ?? 12 load out out v v v ? ? ? out out v out v tc tv ? ? ??
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 12 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , typical performance characteristic (v dd = v out +1 v , and if v out <1.5v, v dd =2.5v ce= v dd , c in = 2.2 ? f , c out = 2.2 ? f, t a =25c, unless otherwise noted.) 0 1 2 3 4 5 6 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 bl9110-1.0v output voltage vs. input voltage i out =1ma i out =99ma i out =300ma i out =1a output voltage (v) input voltage (v) 0.0 0.2 0.4 0.6 0.8 1.0 0 50 100 150 200 250 300 350 400 450 500 550 -40 o c 25 o c 85 o c dropout voltage (mv) output current (a) dropout voltage vs. output current bl9110-3.3v 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 i out =1ma i out =99ma i out =300ma output voltage (v) input voltage (v) bl9110-3.3v output voltage vs. input voltage -40 -20 0 20 40 60 80 3.20 3.25 3.30 3.35 3.40 bl9110-3.3v output voltage (v) temperature ( o c) i out =1ma i out =100ma output voltage vs. temperature -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 0 20 40 60 80 bl9110-3.3v quiescent current (ua) temperature ( o c) quiescent current vs. temperature 3.5 4.0 4.5 5.0 5.5 6.0 60 65 70 75 80 85 90 95 100 bl9110-3.3v quiescent current (ua) input voltage (v) quiescent current vs. input voltage
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 13 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , turn on transient response ch1: en pin voltage (v) ch 2 : input inrush current (ma) ch 4 : output voltage (v) turn off transient response ch1: en pin voltage (v) ch 4 : output voltage (v) turn off transient response ch1: en pin voltage (v) ch 4 : output voltage (v) 100ma, resistive load no load load transient response ch 2 : output current (ma) ch 4 : output voltage (mv) 100ma 500ma load transient response ch 2 : output current (ma) ch 4 : output voltage (mv) 50ma 100ma b l9110 - 3.3v b l9110 - 3.3v b l9110 - 3.3v b l9110 - 3.3v b l9110 - 3.3v 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 bl9110-3.3v output voltage (v) output current (a) output voltage vs. output current
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 14 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , line transient response i out =1ma ch 2 : input voltage (v) ch 4 : output voltage (mv) line transient response i out =100ma ch 2 : input voltage (v) ch 4 : output voltage (mv) b l9110 - 3.3v b l9110 - 3.3v
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 15 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , applications information the bl9110 is a low dropout cmos - based positive voltage regulator that operates the input voltage from +2.5v to 6.0v. output voltages are optional ranging from 1.0v to 5.0v, and can supply current up to 1.0 a. enable function the bl9110 is shutdown by pulling the ce input low, and turn on by driving the input high. if this feature is not be used, the ce input should be floating or tied to vdd to keep the regulator on at all times. programming the bl9110 adjustable ldo regulator the bl9110 is available in two types, either fixed or adjustable output voltage. the output range of the adjustable types is from 1v to 5v. the output voltage of the bl9110 adjustable regulator is program med using an extern al resistor divider as show in figure as below. the output voltage is calculated using equation as below: where v ref =1v is the internal reference voltage. resistors r1 and r2 should be chosen for approximately 50ua divider curren t. lower value resistors can be used for improved noise performance, but the solution consumes more power. higher resistor values should be avoided as leakage current at adj increases the output voltage error. the recommended design procedure is to choose r2=20 k to set the divider current at 50ua, and then calculate r1 using equation as below: a small compensation capacitor c3 placed between vout and adj may improve the stability of the adjustable. the suggested value of this capacitor is about 10pf to 22pf. output voltage programming guide output voltagte r1 r2 1.8v 16 k 20 k 2.5v 30 k 20 k 3.3v 51 k 22 k 3.6v 62 k 24 k bl9110 adjustable ldo regulator programming thermal protection thermal overload protection limits total power dissipation in the bl9110. when the junction temperature exceeds t j =165 c , the otp circuit starts the thermal shutdown function and turn s the pass element off allowing the ic to cool. t he otp circu it turns on the pass element again after ic s junction temperature cool by 30 c , result in a pulsed output during continuous thermal 1 1 2 out ref r vv r ?? ? ? ? ?? ?? 1 1 2 out ref v rr v ?? ? ? ? ?? ?? b l 9 1 1 0 v d d g n d c e v o u t v d d c 2 2 . 2 u f v o u t c 1 1 0 u f r 1 r 2 c 3 a d j
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 16 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , overload conditions. thermal - overloaded protection is designed to protect the bl9110 in the event of fault conditions . do n ot exceed the absolute maximum junction temperature rating of t j =125 c for continuous operation. the build - in fold - back current limit protection circuit will reduce current value as output voltage drops. when output is shorted to ground, current limit is r educed to 250ma, avoiding damaging the device. operating region and power dissipation the maximum power dissipation of bl9110 depends on the thermal resistance of the case and circuit board, the temperature difference between the die junction and ambient air, and the rate of airflow. the power dissipation across the device is p d = (v dd ? v out ) i out + v dd i q the maximum power dissipation is: p d (max) = (t j (max) ? t a ) / ja where t j (max) is the maximum operation junction temperature 125c, t a is the ambient temperature and the ja is the junction to ambient thermal resistance. the gnd pin of the bl9110 performs the dual function of providing an electrical connection to ground and channeling heat away. connect the gnd pin to ground using a larg e pad or ground plane. capacitor selection and regulator stability like any low - dropout regulator, the external capacitors used with the bl9110 must be carefully selected for regulator stability and performance. the bl9110 requires an output capacitor between the vout and gnd pins for phase compensation. using a capacitor whose value is 1f on the bl9110 input and the amount of capacitance can be increased without limit. the input capacitor must be located a dis tance of not more than 0.5 inch from the input pin of the ic and returned to a clean analog ground. any good quality ceramic or tantalum can be used for this capacitor. the capacitor with larger value and lower esr (equivalent series resistance) provides b etter psrr and line - transient response. the output capacitor must meet both requirements for minimum amount of capacitance and esr in all ldo application s . the bl9110 is designed specifically to work with low esr ceramic output capacitor in space - saving an d performance consideration. in the bl9110, phase compensation is made with the output capacitor for securing stable operation even if the load current is varied. for this purpose, use a 2.2uf capacitor between vout pin and gnd pin as close as possible. l oad - transient considerations the bl9110 load - transient response graphs show two components of the output response: a dc shift from the output impedance due to the load current change, and the transient response. the dc shift is quite small due to the exc ellent load regulation of the ic. typical output voltage transient spike for a step change in the load current from 0ma to 50ma is tens of mv,
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 17 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , depending on the esr of the output capacitor. increasing the output capacitor's value and decreasing the esr atte nuates the overshoot. input - output (dropout) voltage a regulator's minimum input - output voltage differential (or dropout voltage) determines the lowest usable supply voltage. in battery - powered systems, this will determine the useful end - of - life battery voltage. because the bl9110 uses a p - channel mosfet pass transistor, the dropout voltage is a function of drain - to - source on resistance [r ds(on) ] multiplied by the load current. layout considerations to improve ac performance such as psrr, output noise, and transient response, it is recommended that the pcb be designed with separate ground planes for vdd and vout , with each ground plane connected only at the gnd pin of the device. make vdd and gnd lines sufficientl y wide. if their impedance is high, noise pickup or unstable operation may result. connect a capacitor c1 between vdd and gnd pin, as close as possible to the pins. set external components, especially the output capacitor c2, as close as possible to the ic , and make wiring as short as possible. bl9110 sot89 - 5 pcb layout for reference top layer bottom l ayer
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 18 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , package description symbol dimensions in millimeters min nom max a 0.7 0.75 0.8 a1 0.02 0.05 b 0.25 0.3 0.35 c 0.18 0.2 0.25 d 1.95 2 2.05 d 2 1 1.45 e 0.65bsc nd 1.30bsc e 1.95 2 2.05 e2 0.50 0.85 l 0.25 0.30 0.40 h 0.1 0.15 0.2 dfn - 6 surface mount package dfn - 6
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 19 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , symbol dimensions in millimeters dimensions in inches min max min max a 1.397 1. 6 00 0.0 55 0.0 63 b 0. 356 0. 508 0.0 14 0.0 20 b1 0.406 0.533 0.0 16 0. 021 b 2.388 2.591 0.0 94 0.102 c 3.937 4.242 0.155 0.167 c1 0.787 1.194 0.031 0.047 d 4.394 4.597 0.173 0.181 d1 1.397 1.702 0.055 0.067 e 1.500 typ. 0.060 typ. h 0.356 0.432 0.014 0.017 sot89 - 5 surface mount package sot89 - 5
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 20 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , package sot - 223 devices per reel 2500 unit mm package specification min nom max . a 1.50 1.65 1.80 a1 0.02 0.06 0.10 a2 1.45 1.60 1.75 a3 0.80 0.90 1.00 b 0.67 - 0.80 b1 0.66 0.71 0.75 b2 2.96 - 3.09 b3 2.95 3.00 3.05 c 0.30 - 0.35 c1 0.29 0.30 0.31 d 6.35 - 7.05 d1 6.30 6.50 6.70 e 6.80 7.00 7.20 e1 3.40 3.50 3.60 e 2.30bsc e1 4.60bsc l 0.80 1.00 1.20 l1 1.75ref l2 0.25bsc 0 - 8 1 10 12 14 sot - 223 - 3
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 21 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , taping dimension taping reel dimension
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 22 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , s ot - 223 - 5
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 23 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , package to252 - 3 devices per reel 2500 taping dimension to - 2 5 2 - 3
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 24 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , to - 252 - 5
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 25 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , symbol dimensions in millimeters m in nom max a 1 0.05 0.15 0. 2 5 a2 2.1 2.3 2.5 a3 0.5 0.6 0.7 b 0.46 0.6 b 1 0.45 0.5 0.55 c 0. 49 0. 56 c1 0.48 0.5 0. 52 d 6.3 6.5 6.7 d1 5.30 ref e1 5.30 5.50 5.70 e 1.27bsc l 1.40 1.50 1.60 l1 3.0 3.1 3.2 l2 1.40bsc 0 8 to - 263 - 3
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 26 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter ,
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 27 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter ,
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 28 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , to - 220 - 3
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 29 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , sot - 89 - 3
ppmic bu www.belling.com.cn bl9110 rev 2.0 belling proprietary information. unauthorized photocopy and duplication prohibited 04 / 2016 ? 201 1 belling all rights reserved 30 bl9110 1a low dropout, low quiescent current high psrr cmos linear regulator step - down converter , to92 - 3

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