october 2005 1 m9999-101805 mic2211 micrel, inc. mic2211 dual cap ldo in 3mm 3mm mlf? general description the mic2211 is a dual cap low dropout regulator. the ?rst regulator is capable of sourcing 150ma, while the second regulator can source up to 300ma. ideal for battery operated applications, the mic221 1 offers 1% accuracy, extremely low dropout voltage (80mv @ 100ma), and extremely low ground current (only 48 a total). equipped with ttl logic compatible enable pins, the mic2211 can be put into a zero-off-mode current state, drawing no current when disabled. separate enable pins allow individual control of each output voltage. the mic2211 is a cap design, operating with very small ceramic output capacitors for stability, reducing required board space and component cost. the mic2211 is available in ?xed output voltages in the 10-pin 3mm 3mm mlf? leadless package. typical application mic2211 typical cell phone application features ? input voltage range: 2.25v to 5.5v ? stable with ceramic output capacitor ? 2 ldo outputs: ? output 1 - 150ma output current ? output 2 - 300ma output current ? low dropout voltage of 80mv @ 100ma ? ultra-low quiescent current of 48 a total (24 a/ldo) ? high output accuracy: ? +1.0% initial accuracy ? +2.0% over temperature ? thermal shutdown protection ? current limit protection ? tiny 10-pin 3mm 3mm mlf? package applications ? cellular phones ? wireless modems ? pdas micrel, inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? tel + 1 (408) 944-0800 ? fax + 1 (408 ) 474-1000 ? http://www.micrel.com micro leadframe and mlf are trademarks of amkor technology, inc. vin en1 off on off on en2 cbyp baseband processor vout1 v i/o vout2 0.01 f 1 f ceramic 1 f v core gnd mic2211-xxbml downloaded from: http:///
mic2211 micrel, inc. m9999-101905 2 october 2005 ordering information part number voltage* (vo1/vo2) junction temp. range package full manufacturing pb-free mic2211-1.5/1.8bml mic2211-fgbml mic2211-fgyml 1.5v/1.8v -40c to +125c 10-pin 3x3 mlf? mic2211-1.5/2.8bml mic2211-fmbml mic2211-fmyml 1.5v/2.8v -40c to +125c 10-pin 3x3 mlf? mic2211-1.5/2.85bml mic2211-fnbml mic2211-fnyml 1.5v/2.85v -40c to +125c 10-pin 3x3 mlf? mic2211-1.5/2.9bml mic2211-fobml mic2211-foyml 15v/2.9v -40c to +125c 10-pin 3x3 mlf? mic2211-1.5/3.1bml mic2211-fqbml mic2211-fqyml 1.5v/3.1v -40c to +125c 10-pin 3x3 mlf? mic2211-1.6/2.8bml mic2211-wmbml mic2211-wmyml 1.6v/2.8v -40c to +125c 10-pin 3x3 mlf? mic2211-1.6/2.9bml mic2211-wobml mic2211-woyml 1.6v/2.9v -40c to +125c 10-pin 3x3 mlf? mic2211-1.6/3.3bml mic2211-wsbml mic2211-wsyml 1.6v/3.3 -40c to +125c 10-pin 3x3 mlf? mic2211-1.8/2.5bml mic2211-gjbml mic2211-gjyml 1.8v/2.5v -40c to +125c 10-pin 3x3 mlf? mic2211-1.8/2.6bml mic2211-gkbml mic2211-gkyml 1.8v/2.6v -40c to +125c 10-pin 3x3 mlf? mic2211-1.8/2.8bml mic2211-gmbml mic2211-gmyml 1.8v/2.8v -40c to +125c 10-pin 3x3 mlf? mic2211-1.8/2.9bml mic2211-gobml mic2211-goyml 1.8v/2.9v -40c to +125c 10-pin 3x3 mlf? mic2211-1.8/3.0bml mic2211-gpbml mic2211-gpyml 1.8v/3.0v -40c to +125c 10-pin 3x3 mlf? mic2211-1.8/3.3bml mic2211-gsbml mic2211-gsyml 1.8v/3.3v -40c to +125c 10-pin 3x3 mlf? mic2211-1.9/2.8bml mic2211-ymbml mic2211-ymyml 1.9v/2.8v -40c to +125c 10-pin 3x3 mlf? mic2211-2.0/3.0bml mic2211-hpbml mic2211-hpyml 2.0v/3.0v -40c to +125c 10-pin 3x3 mlf? mic2211-2.5/1.8bml mic2211-jgbml mic2211-jgyml 2.5v/1.8v -40c to +125c 10-pin 3x3 mlf? mic2211-2.5/1.9bml mic2211-jybml mic2211-jyyml 2.5v/1.9v -40c to +125c 10-pin 3x3 mlf? mic2211-2.5/2.8bml mic2211-jmbml mic2211-jmyml 2.5v/2.8v -40c to +125c 10-pin 3x3 mlf? mic2211-2.5/3.0bml mic2211-jpbml mic2211-jpyml 2.5v/3.0v -40c to +125c 10-pin 3x3 mlf? mic2211-2.5/3.3bml mic2211-jsbml mic2211-jsyml 2.5v/3.3v -40c to +125c 10-pin 3x3 mlf? mic2211-2.6/1.8bml mic2211-kgyml 2.6v/1.8v -40c to +125c 10-pin 3x3 mlf? mic2211-2.6/2.85bml mic2211-knyml 2.6v/1.85v -40c to +125c 10-pin 3x3 mlf? mic2211-2.6/3.0bml mic2211-kpbml mic2211-kpyml 2.6v/3.0v -40c to +125c 10-pin 3x3 mlf? mic2211-2.7/1.8bml mic2211-lgbml mic2211-lgyml 2.7v/1.8v -40c to +125c 10-pin 3x3 mlf? mic2211-2.7/3.0bml mic2211-lpbml mic2211-lpyml 2.7v/3.0v -40c to +125c 10-pin 3x3 mlf? mic2211-2.8/1.5bml mic2211-mfbml mic2211-mfyml 2.8v/1.5v -40c to +125c 10-pin 3x3 mlf? mic2211-2.8/1.6bml mic2211-mwbml mic2211-mwyml 2.8v/1.6v -40c to +125c 10-pin 3x3 mlf? mic2211-2.8/1.8bml mic2211-mgbml mic2211-mgyml 2.8v/1.8v -40c to +125c 10-pin 3x3 mlf? mic2211-2.8/2.5bml mic2211-mjbml mic2211-mjyml 2.8v/2.5v -40c to +125c 10-pin 3x3 mlf? mic2211-2.8/2.8bml mic2211-mmbml mic2211-mmyml 2.8v/2.8v -40c to +125c 10-pin 3x3 mlf? mic2211-2.8/3.0bml mic2211-mpbml mic2211-mpyml 2.8v/3.0v -40c to +125c 10-pin 3x3 mlf? mic2211-2.8/3.3bml mic2211-msbml mic2211-msyml 2.8v/3.3v -40c to +125c 10-pin 3x3 mlf? mic2211-2.85/2.85bml mic2211-nnbml mic2211-nnyml 2.85v/2.85v -40c to +125c 10-pin 3x3 mlf? mic2211-2.85/3.3bml mic2211-nsbml mic2211-nsyml 2.85v/3.3v -40c to +125c 10-pin 3x3 mlf? mic2211-2.9/1.5bml mic2211-ofmbl mic2211-ofyml 2.9v/1.5v -40c to +125c 10-pin 3x3 mlf? mic2211-2.9/2.9bml mic2211-oobml mic2211-ooyml 2.9v/2.9v -40c to +125c 10-pin 3x3 mlf? mic2211-3.0/1.6bml mic2211-pwbml mic2211-pwyml 3.0v/1.6v -40c to +125c 10-pin 3x3 mlf? mic2211-3.0/2.7bml mic2211-plbml mic2211-plyml 3.0v/2.7v -40c to +125c 10-pin 3x3 mlf? mic2211-3.0/2.8bml mic2211-pmbml mic2211-pmyml 3.0v/2.8v -40c to +125c 10-pin 3x3 mlf? mic2211-3.0/2.85bml mic2211-pnbml mic2211-pnyml 3.0v/2.85v -40c to +125c 10-pin 3x3 mlf? mic2211-3.0/3.0bml mic2211-ppbml mic2211-ppyml 3.0v/3.0v -40c to +125c 10-pin 3x3 mlf? mic2211-3.0/3.3bml mic2211-psbml mic2211-psyml 3.0v/3.3v -40c to +125c 10-pin 3x3 mlf? mic2211-3.3/1.8bml mic2211-sgbml mic2211-sgyml 3.3v/1.8v -40c to +125c 10-pin 3x3 mlf? mic2211-3.3/2.8bml mic2211-smbml mic2211-smyml 3.3v/2.8v -40c to +125c 10-pin 3x3 mlf? mic2211-3.3/3.3bml mic2211-ssbml mic2211-ssyml 3.3v/3.3v -40c to +125c 10-pin 3x3 mlf? mic2211-3.6/3.6bml mic2211-vvbml mic2211-vvyml 3.6v/3.6v -40c to +125c 10-pin 3x3 mlf? mic2211-adj/adjbml mic2211-aabml mic2211-aayml adj/adj -40c to +125c 10-pin 3x3 mlf? * for other output voltage options, contact micrel marketing. downloaded from: http:///
october 2005 3 m9999-101805 mic2211 micrel, inc. 1 vin en1en2 byp adj1 10 vout1 vout2 nc adj2 gnd 98 7 6 23 4 5 10-pin 3mm 3mm mlf? (ml) adjustable (top view) pin con?guration 1 vin en1en2 byp nc 10 vout1 vout2 nc nc gnd 98 7 6 23 4 5 10-pin 3mm 3mm mlf? (ml) (top view) voltage code adj. a 1.5 f 1.6 w 1.8 g 1.85 d 1.9 y 2.0 h 2.1 e 2.5 j 2.6 k 2.65 i 2.7 l 2.8 m 2.850 n 2.9 o 3.0 p 3.1 q 3.2 r 3.3 s 3.4 t 3.5 u 3.6 v table 1. voltage codes pin description pin number pin name pin function 1 vin supply input: (vin1 and vin2 are internally tied together.) 2 en1 enable input to regulator 1: enables regulator 1 output. active high input. high = on, low = off. do not leave ?oating. 3 en2 enable input to regulator 2: enables regulator 2 output. active high input. high = on, low = off. do not leave ?oating. 4 cbyp reference bypass: connect external 0.01 f to gnd to reduce output noise. may be left open. 5, 7, 8 nc no connection. 6 gnd ground: connect externally to exposed pad. 9 vout2 output of regulator 2: 300ma output current 10 vout1 output of regulator 1: 150ma output current ep gnd ground: internally connected to the exposed pad. connect externally to pin 6. downloaded from: http:///
mic2211 micrel, inc. m9999-101905 4 october 2005 electrical characteristics (4) v in = v out +1.0v for higher output of the regulator pair; c out = 1.0 f, i out = 100 a; t j = 25c, bold values indicate C40c t j +125c, unless noted. parameter conditions min typ max units output voltage accuracy variation from nominal v out C1.0 +1.0 % C2.0 +2.0 % output voltage temp. coef?cient 40 ppm/c line regulation (5) v in = v out +1v to 5.5v C0.3 0.02 0.3 %/v C0.6 0.6 load regulation i out = 100 a to 150ma (regulator 1 and 2) 0.2 1.0 % i out = 100 a to 300ma (regulator 2) 1.5 % dropout voltage (6) i out = 150ma (regulator 1 and 2) 120 190 mv 250 mv i out = 300ma (regulator 2) 240 340 mv 420 ground pin current i out1 = i out2 = 0 a 48 65 a 80 a i out1 = 150ma & i out2 = 300ma 60 a ground pin current in shutdown v en 0.4v 2.0 a ripple rejection f = 1khz; c out = 1.0 f ceramic; c byp = 10nf 60 db f = 20khz; c out = 1.0 f ceramic; c byp = 10nf 40 db current limit v out = 0v (regulator 1) 150 280 460 ma v out = 0v (regulator 2) 300 450 700 ma output voltage noise c out =1 f, c byp =0.01 f, 10hz to 100khz 30 vrms enable input enable input voltage logic low (regulator shutdown) 0.6 v logic high (regulator enabled) 1.8 v enable input current v il < 0.6v (regulator shutdown) C1 0.01 +1 a v ih > 1.8v (regulator enabled) C1 0.01 +1 a notes : 1. exceeding the absoulte maximum ratings may damage the device. 2. the device is not guaranteed to work outside its operating ratings. 3. the maximum allowable power dissipation of any t a (ambient temperature) is (p d(max) = t j(max) C t a ) / ja . exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. 4. speci?cation for packaged product only. 5. minimum input for line regulation test is set to v out + 1v relative to the highest output voltage. 6. dropout voltage is de?ned as the input-to-output differential at which the output voltage drops 2 % below its nominal value measured at 1v differen- tial. for outputs below 2.25v, dropout voltage is the input-to-output voltage differential with the minimum input voltage 2.25v. minimum input operat- ing voltage is 2.25v. absolute maximum rating (1) supply input voltage (v in ) ......................................0v to 7v enable input voltage (v en ) ....................................0v to 7v power dissipation (p d ) ..........................internally limited (3) junction temperature ............................... C40c to +125c storage temperature (t s ) .......................... C65c to 150c lead temperature (soldering, 5 sec.) ........................ 260c operating ratings (2) supply input voltage (v in ) ..............................2.25v to 5.5v enable input voltage (v en ) ................................... 0v to vin junction temperature (t j ) ........................ C40c to +125c package thermal resistance mlf?-10 ( ja ) .................................................... 60c/w downloaded from: http:///
october 2005 5 m9999-101805 mic2211 micrel, inc. 0 0.5 1 1.5 2 2.5 3 0 1 2 3 4 5 output?(v) supply?voltage?(v) dropout c harac teris tic s output 1 150ma 100 a 0 0.5 1 1.5 2 2.5 3 0 1 2 3 4 5 output?(v) supply?voltage?(v) dropout c harac teris tic s output 2 300ma 100 a 0 10 20 30 40 50 60 0 1 2 3 4 5 6 ground?current ( a) supply?voltage?(v) g round c urrent vs . s uppl y v oltage output 1 and 2 with 100 a load 0 10 20 30 40 50 60 0 20 40 60 80 100 120 140 ground?current ( a) output?1?load?current?(ma) g round c urrent vs . output 1 c urrent 0 10 20 30 40 50 60 0 50 100 150 200 250 300 ground?current ( a) output?2?load?current?(ma) g round c urrent vs . output 2 c urrent 10e-9 100e-9 1e-6 10e-6 spectral?noise?density?(v/root?hz) frequency?(hz) s pec tral?nois e dens it y output 1 c out = 1 f c in = 1 f c b y p = 0.01 f 100 a load 10 100 1k 10k 100k 1m 10 100 1k 10k 100k 1m 10e-9 100e-9 1e-6 10e-6 spectral?noise?density?(v/root?hz) frequency?(hz) s pec tral?nois e dens it y output 2 100 a load c out = 1 f c in = 1 f c b y p = 0.01 f 0 20 40 60 80 0.01 0.1 1 10 100 1000 psrr (db) frequency (khz) p sr routp ut 2 c b yp = 10nf c b yp = 100nf c b yp = 1nf v in = v out + 1 i out = 300ma c out = 1f 0 20 40 60 80 0.01 0.1 1 10 100 1000 psrr (db) frequency (khz) p sr routp ut 1 c b yp = 10nf c b yp = 100nf c b yp = 1nf v in = v out + 1 i out = 150ma c out = 1f 0 50 100 150 -40 -20 0 20 40 60 80 100 120 140 dropout?voltage?(mv) temperature ( c) dropout v oltage output 1 150ma load 0 50 100 150 200 250 300 350 -40 -20 0 20 40 60 80 100 120 140 dropout?voltage?(mv) temperature ( c) dropout v oltage output 2 300ma load 0 10 20 30 40 50 60 -40-20 0 2040 60 80 100120 140 160 ground?pin?current ( a) temperature ( c) g round p in c urrent load on both outputs 0 a 100 a 1ma typical characteristics downloaded from: http:///
mic2211 micrel, inc. m9999-101905 6 october 2005 0 5 10 15 20 25 30 35 0 50 100 150 ground?current ( a) output?1?load?current?(ma) g round c urrent vs . output c urrent ldo1 only ldo2?dis abled (v e n2 = low ) ldo1 0 5 10 15 20 25 30 35 0 50 100 150 200 250 300 ground?current ( a) output?2?load?current?(ma) g round c urrent vs . output c urrent ldo2 only ldo1?dis abled (v e n1 = low ) ldo2 0 10 20 30 40 50 60 0 50 100 150 ground?current ( a) output?1?load?current?(ma) g round c urrent vs . output c urrent b oth ldos active ldo2 = 300ma output c urrent ldo1 v aried from 0 to f ull load b oth e nabled 0 10 20 30 40 50 60 0 50 100 150 200 250 300 ground?current ( a) output?2?load?current?(ma) g round c urrent vs . output c urrent b oth ldos active ldo1 = 150ma output c urrent ldo2 v aried from 0 to f ull load b oth e nabled typical characteristics (cont.) 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 2.25 2.75 3.25 3.75 4.25 4.75 5.25 enable?threshold?(v) supply?voltage?(v) e nable v oltage t hres hold vs . s uppl y v oltage 2.65 2.70 2.75 2.80 2.85 2.90 2.95 -40 -20 0 20 40 60 80 100 120 140 output?voltage?(v) temperature ( c) output v oltage 2 vs .?t emperature 100 a load 2.85 2.90 2.95 3.00 3.05 3.10 3.15 -40 -20 0 20 40 60 80 100 120 140 output?voltage?(v) temperature ( c) output v oltage 1 vs .?t emperature 100 a load 2.820 2.825 2.830 2.835 2.840 2.845 2.850 2.855 2.860 2.865 2.870 0 50 100 150 200 250 300 output?voltage?(v) output?2?load?current?(ma) output v oltage vs . l oad c urrent 2.580 2.585 2.590 2.595 2.600 2.605 2.610 0 25 50 75 100 125 150 output?voltage?(v) output?1?load?current?(ma) output v oltage vs . l oad c urrent downloaded from: http:///
october 2005 7 m9999-101805 mic2211 micrel, inc. functional characteristics downloaded from: http:///
mic2211 micrel, inc. m9999-101905 8 october 2005 functional diagram out1out2 gnd en2 cbyp en1 vin ldo1 ldo2 reference mic2211 fixed voltage block diagram out1out2 gnd en2 cbyp en1 vin ldo1 ldo2 reference adj1 adj2 mic2211 adjustable voltage block diagram downloaded from: http:///
october 2005 9 m9999-101805 mic2211 micrel, inc. functional description the mic2211 is a high performance, low quiescent current, power management ic consisting of two cap low dropout regulators. the ?rst regulator is capable of sourcing 150ma at output voltages from 1.25v to 5v; the second regulator is capable of sourcing 300ma of current at output voltages from 1.25v to 5v. enable 1 and 2 the enable inputs allow for logic control of both output volt- ages with individual enable inputs. the enable input is active high, requiring 1.8v for guaranteed operation. the enable input is cmos logic and cannot by left ?oating. input capacitor good bypassing is recommended from input to ground to help improve ac performance. a 1 f capacitor or greater located close to the ic is recommended.bypass capacitor the internal reference voltage of the mic2211 can b e bypassed with a capacitor to ground to reduce output noise a nd increase power supply rejection (psrr). a quick-start feature allows for quick turn-on of the output voltage regardless of the size of the capacitor. the recommended nominal bypass ca pacitor is 0.01 f, but it can be increased without limit. output capacitor each regulator output requires a 1 f ceramic output capaci- tor for stability. the output capacitor value can be increased to improve transient response, but performance has been optimized for a 1 f ceramic type output capacitor. x7r/x5r dielectric-type ceramic capacitors are reco m- mended because of their temperature performance. x7 r-type capacitors change capacitance by 15% over their operating temperature range and are the most stable type of ceramic capacitors. z5u and y5v dielectric capacitors change value by as much as 50% and 60% respectively over their operat- ing temperature ranges. to use a ceramic chip capacitor with y5v dielectric, the value must be much higher than an x7r ceramic capacitor to ensure the same minimum capacitance over the equivalent operating temperature range. adjustable regulator design vout1adj1 r1r2 adj2 vout2 r2 r1 gnd mic2211 adjustable regulator design the mic2211 allows the programming of the output voltages 1 and 2 anywhere between 1.25v and 5.5v, the maximum operating rating of the part. two resistors are req uired for each output. appropriate resistor values are required to prevent the low quiescent current performance being compromised. resistor values recommended are between 100k? and 500k?. the resistor values are calculated by: r1 = r2 1.250 C 1 v out where v out is the desired output voltage. calculate sepa- rately for each output. downloaded from: http:///
mic2211 micrel, inc. m9999-101905 10 october 2005 package information 10-pin mlf? (ml) micrel inc. 2180 fortune drive san jose, ca 95131 usa tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 web http://www.micrel.com this information furnished by micrel in this data sheet is believed to be accurate and reliable. however no responsibility is assumed by micrel for its use. micrel reserves the right to change circuitry and speci?cations at any time without noti?cation to t he customer. micrel products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a signi?cant injury to the user. a purchaser's use or sale of micrel products for use in life support appliances, devices or systems is a purchaser's own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2002 micrel incorporated downloaded from: http:///
|
