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ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 1 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , features ? u p to 3 00ma output current(each ldo) ? dual shutdown pins control each output ? 90ua operating supply current per ldo ? excellent line regulation:0.05%/v ? low dropout:220mv@300ma ? high power supply rejection ratio ? wide operating voltage range:2.0v to 6.0v ? 1.2v to 3.3 v factory - preset output ? high accuracy : 1% or 2% ? internal pulled down( 8 m )resistor ? current limiting and thermal protection ? two ldos in sot - 23 - 6 and esop - 8 package ? rohs compliant and 100% lead(pb) - free applications ? cellular and smart phones ? battery - powered equipment ? laptop, palmtops, notebook computers ? hand - held instruments ? pc mcia cards and wireless lan ? mp3 /mp4/mp5 players ? portable information appliances description the bl 9180 dual, low noise, low - dropout regulato r supplying up to 300ma output current at each channel . the output voltage for each regulator is set independently b y trimming. voltages are selectable in 50mv ste ps within a range of 1.2v to 3.3 v by operating from a 2v to 6v input . the bl9180 includes two independent logic - controlled shutdown inputs and allows the output of each regulator to be turned off independently . when both outputs shutdown simultaneously, the chip will be turn off and consumes nearly zero operation current which is suitable for battery - power devices. the bl9180 includes high accuracy voltage reference, error amplifier, current limit circuit and o utput driver module. the bl9180 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. and it uses trimming technique to guarantee output voltage accuracy within 1% or 2%. the bl9180 is availabl e in sot - 23 - 6 and esop - 8 package which is l ead(pb) - free. ordering information bl9180 x x x xx typical application bl9180 x x x rb application hints: output capacitor (c out 2.2uf ) is recommended in bl9180 app lication s to assure the circuit s stability for output voltage 1.8v. package: ra:sot - 23 - 6a rb:sot - 23 - 6b ep:esop - 8 features: p:standard(default, lead free) c:customized o utput voltage accuracy a:1% b:2% output voltage a: 1.3v(output1),2.8v(output2) b: 1.5v(output1),3.0v(output2) c: 1.8v(output1),2.5v(output2) d: 1.8v(output1),2.8v(output2) e: 2.5v(output1),1.8v(output2) f: 2.8v(output1),1.8v(output2) g: 2.8v(output1),3.0 v(output2) h: 2.8v(output1),3.3v(output2) i: 3.0v(output1),1.5v(output2) j: 3.3v(output1),2.8v(output2) k: 3.3v(output1),3.3v(output2) l:2.8v(output1),1.2v(output2) m : 1 .8v(output1), 3.3 v(output2) n : 1 . 5 v(output1), 3.3 v(output2) o: 1 . 2 v(output1), 3.3 v(output2) p: 1 . 2 v(output1), 1.8 v(output2) bl9180 en1 1 vdd 2 en2 3 vout2 4 gnd 5 vout1 6 1uf 1uf 1uf vin vout1 vout2
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 2 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , absolute maximum rating (note 1) i nput supply voltage (v in ) - 0.3v to + 7 v en input voltage - 0.3v to +v in output voltage - 0.3v to v in +0.3v output curren t 4 00ma maximum junction temperatu re 125c operating temperature range (note2) - 40c to 85c storage temperature range - 65c to 125c lead temperatur e (soldering, 10s) 300 c package information pin description name function vo ut1 ldo1 output pin vdd input pin vout2 ldo2 output pin en2 ldo2 enable pin gnd ground pin en1 ldo1 enable pin1 vin1 input pin 1 vin2 input pin2 y 9 a b c d year 2009 2010 2011 2012 2013 w 1 25 2 6 2 7 51 52 week a y z a y z p roduct cl assification output voltage voltage code accuracy package type product name package type product name package type product name 1.3v/2.8v a 2% sot - 23 - 6a bl9180 - ab pra sot - 23 - 6b bl9180 - ab pr b esop - 8 bl9180 - a b p ep 1.5v/3.0v b 2% sot - 23 - 6a bl9180 - bb pr a sot - 23 - 6b bl9180 - bb prb esop - 8 bl9180 - b b p ep 1.8v/2.5v c 2% sot - 23 - 6a bl9180 - cb pra sot - 23 - 6b bl9180 - cb prb esop - 8 bl9180 - c b p ep 1.8v/2.8v d 2% sot - 23 - 6a bl9180 - db pra sot - 23 - 6b bl9180 - db prb esop - 8 bl9180 - d b p ep 2.5v/1.8v e 2% sot - 23 - 6a bl9180 - eb pra sot - 2 3 - 6b bl9180 - eb prb esop - 8 bl9180 - e b p ep part number top mark temp range bl 91 80 - xxxra e vy w (note3) - 40c to +85c bl91 80 - xxxrb e vy w - 40c to +85c bl 9180 - xxxep bl 9180 vyw ep (note3) - 40c to +85c thermal resistance (note 4 ) : package ? ja ? jc sot23 - 6 250 ? c/w 130 c/w esop - 8 50 ? c/w 1 0 ? c/w 1 2 3 6 4 sot - 23 - 6 a top view m a r k i n g 5 vout 1 vdd vout 2 en 1 gnd en 2 1 2 3 6 4 sot - 23 - 6 b top view m a r k i n g 5 vout 1 gnd vout 2 en 1 vdd en 2 1 2 3 8 6 esop - 8 top view m a r k i n g 7 en 1 gnd en 2 vout 1 vin 1 vout 2 4 5 vin 2 gnd
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 3 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , 2.8v/1.8v f 2% sot - 23 - 6a bl9180 - fb pra sot - 23 - 6b bl9180 - fb prb esop - 8 bl9180 - fb p ep 2.8v/3.0v g 2% sot - 23 - 6a bl9180 - gb pra sot - 23 - 6b bl9180 - gb prb esop - 8 bl9180 - gb p ep 2.8v/3.3v h 2% sot - 23 - 6a bl9180 - hb pra sot - 23 - 6b bl 9180 - hb prb esop - 8 bl9180 - hb p ep 3.0v/1.5v i 2% sot - 23 - 6a bl9180 - ib pra sot - 23 - 6b bl9180 - ib prb esop - 8 bl9180 - ib p ep 3.3v/2.8v j 2% sot - 23 - 6a bl9180 - jb pra sot - 23 - 6b bl9180 - jb prb esop - 8 bl9180 - jb p ep 3.3v/3.3v k 2% sot - 23 - 6a bl9180 - kb pra sot - 23 - 6b bl9180 - kb prb esop - 8 bl9180 - kb p ep 2.8v/1. 2 v l 2% sot - 23 - 6a bl9180 - lb pra sot - 23 - 6b bl9180 - lb prb esop - 8 bl9180 - lb p ep 1.8v/3.3v m 2% sot - 23 - 6a bl9180 - mb pra sot - 23 - 6b bl9180 - mb prb esop - 8 bl9180 - mb p ep 1.5v/3.3v n 2% sot - 23 - 6a bl9180 - nb pra sot - 23 - 6b bl9180 - nb prb eso p - 8 bl9180 - nb p ep 1.2v/3.3v o 2% sot - 23 - 6a bl9180 - ob pra sot - 23 - 6b bl9180 - ob prb esop - 8 bl9180 - ob p ep 1.2v/1.8 v p 2% sot - 23 - 6a bl9180 - p b pra sot - 23 - 6b bl9180 - p b prb esop - 8 bl9180 - p b p ep note 1: absolute maximum ratings are those values beyond which the life of a device may be impaired. note 2: the bl 9180 is guaranteed to meet performance specifications from 0c to 70c. specifications over the C 40c to 85c operating temperature range are assured by design, characterization and correlation with statistical p rocess controls. note 3: e : bl9180 with ra package e: bl9180 with rb package v: voltage code y: year of wafer manufacturing w : week of wafer manufacturing ep: esop - 8 note 4: thermal resistance is specified with approximately 1 square of 1 oz copper. block d iagram sot23 - 6 esop - 8
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 4 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , electrical characteristics (note 5 ) (v in =3.6v, en 1 = en2= v in, c in =c out =1 ? f , t a =25 c , unless otherwise noted.) parameter symbol conditions min typ max unit input voltage v in 2 6 v output voltage accuracy (note 6) ? out v in= 3.6v, i out =1ma - 1 +1 % - 2 +2 current limit i lim r load =1 ? q v en >1.2v, i out =0ma 180 260 ? drop i out =200ma, v out =2.8v 1 30 18 0 mv i out =300ma, v out =2.8v 210 300 line regulation (note 7 ) v line v in =3.6v to 5.5v i out =1ma 0.05 0. 17 % /v load regulation (note 8 ) v load 1ma ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 5 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , typical performance characteristics -50 -25 0 25 50 75 100 125 2.5 2.6 2.7 2.8 2.9 3.0 output voltage(v) temperaute( ? c ) output voltage vs. temperature v in =3.6v c in =c out =1uf 3.50 3.75 4.00 4.25 4.50 4.75 5.00 5.25 5.50 195 200 205 210 215 220 quiescent current(ua) input voltage(v) c in =1uf c out1 =1uf,c out2 =1uf no load i q vs.v in (bl9180-hbprb) 0 50 100 150 200 250 300 0 50 100 150 200 250 300 dropout voltage(mv) load current(ma) tj=85 ? c tj=25 ? c tj=-40 ? c c in =c out =1uf v out =2.8v dropout voltage vs. load current 10 100 1000 10000 100000 1000000 -80 -70 -60 -50 -40 -30 -20 -10 0 psrr(db) frequency(hz) 1ma load 100ma load 200ma load c in =c out1 =c out2 =1uf v out1 =2.8v v out2 =3.0v psrr(vout1) -50 -25 0 25 50 75 100 125 0.75 0.80 0.85 0.90 0.95 1.00 1.05 temperature( ? c) en pin shutdown threshold(v) en pin shutdown threshold vs. temperature v in =3.6v c in =c out =1uf 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 output voltage(v) input voltage(v) vout1(2.8v) vout2(3.3v) v out vs. v in (bl9180-hbprb) c in =1uf c out1 =c out2 =1uf i out1 =i out2 =100ma
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 6 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter ,
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 7 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0 output voltage(v) input voltage(v) iload=1ma iload=100ma iload=300ma v out vs.v in c in =c out =1uf
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 8 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , applications information the bl9180 is integrated with two low noise, low dropout and low quiescent current linear regulators designed primar il y f or battery applications. output voltag es ar e optional ranging from 1.2 v to 3.3v, and each channel can supply current up to 300 ma. enable function the bl9180 is shutdown by pulling the en input low, and turn on by driving the input high. if this feature is not be used, the en input should be tie d to vin to keep the regulator on at all times. current limit and thermal protection the bl9180 includes two independent current limit structure which monitor and control each pass transistor s gate voltage limiting the guaranteed maximum output current to 300m a. thermal overload protection limits total power dissipation in the bl9180. when the junction temperature exceeds t j =165 c , the otp circuit starts the thermal shutdown fun ction turn the pass element off and allowing the ic to cool. t he otp circuit turn on the pass element again after ic s junction temperature cool by 30 c , result in a pulsed output during conti nuous thermal overload condi tions. thermal - overloaded protection is designed to protect the bl9180 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 output can be shorted to ground for an indefinite amount of time without damaging the part by cooperation of current limit and thermal protection. operating region and power dissipation the maximum power dissipation of bl9180 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 acros s the device is p d = (v in ? v out ) i out + v in 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 t hermal resistance. the gnd pin of the bl9180 performs the dual function of providing an electrical connection to ground and channeling heat away. connect the gnd pin to ground using a large pad or ground plane. capacitor selection and regulator stability like any low - dropout regulator, the external capacitors used with the bl91 80 must be carefully selected for regulator stability and performance. the bl9180 requires an output capacitor between the vout and gnd pins for phase compensation. using a capacito r wh ose value is > 1f on the bl91 80 input and the amount of
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 9 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , capacitance can be increased without limit. the input capacitor must be located a distance of not more than 0.5 inch from the input pin of the ic and returned to a clean analog ground. any good q uality ceramic or tantalum can be used for this capacitor. the capacitor with larger value and lower esr (equivalent series resistance) provides better psrr and line - transient response. the output capacitor must meet both requirements for minimum amount of capacitance and esr in all ldos application s . the bl91 80 is designed specifically to work with low esr ceramic output capacitor in space - saving and performance consideration. using a ceramic capacitor whose value is at least 1f with esr is > 5m on the bl91 80 output ensur es stability. the bl91 80 still works well with output capacitor of other types due to the wide stable esr range. output capacitor of larger capacitance can reduce noise and improve load transient response, stability, and psrr. the output capacitor should be located not more than 0.5 inch from the v out pin of the bl91 80 and returned to a clean analog ground. load - transient considerations the bl9180 load - transient response graphs show two compon ents 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 excellent load regulation of the ic. typical output voltage transient spike for a step chan ge in the load current from 0ma to 50ma is tens of mv, depending on the esr of the output capacitor. increasing the output capacitor's value and decreasing the esr attenuates the overshoot. input - output (dropout) voltage a regulator's minimum input - outp ut 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 bl9180 uses a p - channel mosfet pass transistor, the dropout voltag e 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 groun d planes for v in and v out , with each ground plane connected only a t the gnd pin of the device.
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 10 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , bl9180 layout circuit top layer layout bottom layer layout c1 bl9180 en1 1 vdd 2 en2 3 vout2 4 gnd 5 vout1 6 c2 c3 vout1 vin vout2 vin j1 1 1 2 2 3 3 j2 1 1 2 2 3 3 vin vin
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 11 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , package description
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 12 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter ,
ppmic bu www.belling.com.cn bl 9180 rev 2 .2 belling proprietary information. unauthorized photocopy and duplication prohibited 8 /2013 ? 2 010 belling all rights reserved 13 bl9180 dual, 3 00ma ultra - low noise cmos ldo regulator step - down converter , esop - 8 symbol dimensions in millimeters min nom max a 1.77 a1 0.08 0.18 0.28 a2 1.2 1.4 1.6 a3 0.55 0.65 0.75 b 0.39 0.48 b 1 0.38 0.41 0.43 c 0.21 0.26 c 1 0.19 0.2 0.21 d 4.7 4.9 5.1 e 5.8 6 6.2 e1 3.7 3.9 4.1 e 1.27bsc l 0.5 0.65 0.8 l1 1.05bsc 0 8 d1 3.30ref e2 2.40ref esop - 8 surface mount package

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