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mic5387 ultra-small triple 150ma output ldo mlf and micro leadframe are registered trademarks of amkor technology, inc. micrel inc. 2180 fortune drive san jose, ca 95131 usa te l +1 (408) 944-0800 fax + 1 (408) 474-1000 http://www.micre l.com april 2010 m9999-041610-a general description the mic5387 is an advanced, general-purpose, triple linear regulator offering high power supply rejection (psrr) in an ultra-small, 6-pin, 1.6mm x 1.6mm thin mlf ? package. the mic5387 is capable of 150ma from each output and offers high psrr, making it an ideal solution for any portable electronic application. ideal for battery powered applications, the mic5387 offers 2% initial accuracy, low dropout voltage (180mv @ 150ma), and low ground current (typically 32a per output). the mic5387 is available in a lead-free (rohs compliant) 1.6mm x 1.6mm 6-pin thin mlf ? occupying only 2.56mm 2 of pcb area, a 36% reduction in board area compared to a 2mm x 2mm thin mlf ? package. the mic5387 has an operating junction temperature range of ? 40c to + 125c. datasheets and support documentation can be found on micrels web site at: www.micrel.com. features ? input voltage range: 2.5v to 5.5v ? 150ma guaranteed output current for each output ? stable with ceramic output capacitors ? low dropout voltage: 180mv @ 150ma ? excellent load/line transient response ? low quiescent current: 32a per ldo ? high psrr: 70db ? high output accuracy C 2% initial accuracy ? thermal-shutdown and cu rrent-limit protection ? available in a tiny 6-pin 1.6mm x 1.6mm thin mlf ? applications ? mobile phones ? digital cameras ? gps, pdas, pmp ? portable electronics ___________________________________________________________________________________________________________ typical application downloaded from: http:///
micrel, inc. mic5387 april 2010 2 m9999-041610-a ordering information part number marking code v out1 v out2 v out3 temperature range package mic5387-sgfymt 8a7 3.3v 1.8v 1.5v ? 40c to + 125c 6-pin 1.6mm x 1.6mm thin mlf ? mic5387-sg4ymt 8b7 3.3v 1.8v 1.2v ? 40c to + 125c 6-pin 1.6mm x 1.6mm thin mlf ? mic5387-gmgymt 8c7 1.8v 2.8v 1.8v ? 40c to + 125c 6-pin 1.6mm x 1.6mm thin mlf ? mic5387-gmmymt 8d7 1.8v 2.8v 2.8v ? 40c to + 125c 6-pin 1.6mm x 1.6mm thin mlf ? notes: 1. other voltages available. contact micrel for details. 2. mlf ? = pin 1 identifier. 3. mlf ? is a green rohs-compliant package. lead fi nish is nipdau. mold compound is halogen free. pin configuration 6-pin 1.6mm x 1.6mm thin mlf ? (mt) pin description pin number pin names pin function 1 gnd ground for ldo1, 2 and 3. 2 vin input supply for ldo1, 2 and 3. 3 en2/3 enable input 2/3: enables ldo2 and ldo3, acti ve high. high = on; low = off. do not leave floating. 4 out3 output voltage for ldo3. 5 out2 output voltage for ldo2. 6 out1 output voltage for ldo1. ep hs pad exposed heastsink pad (connect to ground plane for best thermal). downloaded from: http:///
micrel, inc. mic5387 april 2010 3 m9999-041610-a absolute maximum ratings (1) supply voltage (v in ) ........................................ ? 0.3v to + 6v enable voltage (v en2/3 )...................................... ? 0.3v to v in power dissipation (p d ) ........................... internally limited (3) lead temperature (solde ring, 10sec )........................ 260c junction temperature (t j ) ........................ ? 40c to + 150c storage temperature (t s ) ......................... ? 65c to + 150c esd rating (4) .................................................................. 2kv operating ratings (2) supply voltage (v in )......................................... 2.5v to 5.5v enable voltage (v en2/3 ) .......................................... 0v to v in junction temperature (t j ) ........................ ? 40c to + 125c junction thermal resistance 6-pin 1.6mm x 1.6mm thin mlf ? ( ja ) ..........92.4c/w electrical characteristics (5) v in = v en2/3 = v out + 1v; highest of the three outputs; c in = c out1 = c out2 = c out3 = 1f; i out1 = i out2 = i out3 = 100a; t j = 25c, bold values indicate ? 40c to + 125c, unless noted. parameter condition min. typ. max. units variation from nominal v out C2.0 +2.0 % output voltage accuracy variation from nominal v out ; ? 40c to + 125c C3.0 +3.0 % line regulation v in = v out + 1v to 5.5v; i out = 100a 0.02 0.3 % load regulation (6) i out = 100a to 150ma 0.65 % i out = 50ma; v out 2.8v 55 110 mv i out = 150ma; v out 2.8v 155 310 mv i out = 50ma; v out < 2.8v 60 135 mv dropout voltage (7) i out = 150ma; v out < 2.8v 180 380 mv i out = 0ma; v en2/3 = 0v , v out1 = on 32 40 a ground pin current (8) i out = 0ma; v out > 1.3v v en2/3 = v in 96 120 a f = up to 1khz; c out = 1f; v out < 2.5v 70 db ripple rejection f = 1khz ? 10khz; c out = 1f; v out < 2.5v 60 db current limit v out = 0v 200 325 550 ma output voltage noise c out = 1f, 10hz to 100khz 200 v rms enable input logic lo w 0.2 v enable input voltage (v en2/3 ) logic high 1.2 v v il 0.2v 0.01 1 a enable input current (v en2/3 ) v ih 1.2v 0.01 1 a turn-on time (v out2 , v out3 ) c out = 1f; i out = 150ma 50 125 s notes: 1. exceeding the absolute maximum rating may damage the device. 2. the device is not guaranteed to function outside its operating rating. 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 temperatur e, and the regulator will go into thermal shutdown. 4. devices are esd sensitive. handling pr ecautions recommended. human body model, 1.5k ? in series with 100pf. 5. specification for packaged product only. 6. regulation is measured at constant j unction temperature using low duty cycle pul se testing, changes in output voltage due to heating effects are covered by the thermal regulation specification. 7. dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1v differential. for outputs below 2.5v, dropout voltage is the input-to-output differential with the minimum input voltage 2.5v. 8. ground-pin current is the regulator quiescent current. the to tal current drawn from the supply is the sum of the load curren t plus the ground-pin current. downloaded from: http:///
micrel, inc. mic5387 april 2010 4 m9999-041610-a typical characteristics ground current (v out1 =3.3v) v s. supply voltage 26 28 30 32 34 36 38 40 2.5 2.8 3.1 3.4 3.7 4 4.3 4.6 4.9 5.2 5.5 supply voltage(v) ground current(a) 100 a 50ma 150ma v en2/3 =0v v out =3.3v c in =c out1 =1f single output power supply rejection ratio (psrr) -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 frequency(hz) db i out =100a i out =150ma v out =1.5v c out =1f dropout voltage vs. output current 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 0 20 40 60 80 100 120 140 160 output current (ma) dropout voltage (mv ) v out1 =3.3v c in =c out1 =1f ground current (all v out s) v s. supply voltage 80 85 90 95 100 105 110 115 120 2.5 2.8 3.1 3.4 3.7 4 4.3 4.6 4.9 5.2 5.5 supply voltage (v) ground current (a) 150ma 50ma 100a v in =v en2/3= 4.3v v out1 =3.3v v out2 =1.8v v out3 =1.5v c in =c out1 =c out2 =c out3 =1f dropout voltage vs. temperature 0 20 40 60 80 100 120 140 160 180 200 -40-20 0 20406080100120 temperature(c) dropout voltag (mv ) 150ma 100ma 50ma 10ma v out1 =3.3v c in =c out1 =1f ground current (v out1 =3.3v) vs. temperature 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 -40 -20 0 20 40 60 80 100 120 temperature(c) ground current ( a) v in =4.3v v out =3.3v c in =c out1 =1f 50ma 100a 150ma output voltage (v out1 =3.3v) v s. supply voltage 2.5 2.6 2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 2.5 3 3.5 4 4.5 5 5.5 supply voltage (v) output voltage (v) 50ma 100a 150ma c in =c out1 =1f v out =3.3v output voltage (v out2 =1.8v) vs. supply voltage 1.7 1.75 1.8 1.85 1.9 2.5 3 3.5 4 4.5 5 5.5 supply voltage (v) output voltage (v) 1ma 50ma 150ma v en2/3 =v in v out =1.8v c in =c out2 =1f output voltage (v out3 =1.5v) vs. supply voltage 1.4 1.45 1.5 1.55 1.6 2.5 3 3.5 4 4.5 5 5.5 supply voltage (v) output voltage (v) ` 1ma 50ma 150ma v en2/3 =v in v out =1.5v c in =c out3 =1f output voltage (v out3 =1.2v) vs. supply voltage 1.1 1.15 1.2 1.25 1.3 2.5 3 3.5 4 4.5 5 5.5 supply voltage (v) output voltage (v) 1ma 150ma v en2/3 =v in v out =1.2v c in =c out3 =1f 50ma output voltage (v out1 =3.3v) vs. temperature 3 3.1 3.2 3.3 3.4 3.5 -40 -20 0 20 40 60 80 100 120 temperature(c) output voltage (v) v in =4.3v v out =3.3v c in =c out1 =1f i out1 =150ma output voltage (v out2 =1.8v) vs. temperature 1 1.2 1.4 1.6 1.8 2 -40 -20 0 20 40 60 80 100 120 temperature(c) output voltage (v) v in =v en2/3 =2.8v v out =1.8v c in =c out2 =1f i out2 =150ma downloaded from: http:///
micrel, inc. mic5387 april 2010 5 m9999-041610-a typical characteristics (continued) output voltage (v out3 =1.5v) vs. temperature 1.3 1.4 1.5 1.6 1.7 -40 -20 0 20 40 60 80 100 120 temperature(c) output voltag (v) v in =v en2/3 =2.5v v out =1.5v c in =c out3 =1f i out3 =150ma output voltage (v out =1.2v) vs. temperature 1 1.1 1.2 1.3 1.4 -40 -20 0 20 40 60 80 100 120 temperature(c) output voltage (v) v in =v en2/3 =2.5v v out =1.2v c in =c out3 =1f current limit vs. inputvoltage 280 300 320 340 360 380 22.533.544.555.5 input voltage (v) current limit (ma) v out1 =3.3v v out3 =1.5v v out2 =1.8v v en2/3 =v in c in =c out1 =c out2 =c out3 =1f output noise spectral density 0.001 0.01 0.1 1 10 100 1,000 10,000 100,000 frequency (hz) noise uv/ hz v in =v en2/3 =5v v out3 =1.5v c out3 =1f i out3 =100a output voltage noise=152vrms output noise spectraldensity 0.01 0.1 1 10 100 1,000 10,000 100,000 frequency (hz) noise uv/ hz v in =v en2/3 =5v v out3 =1.5v c out3 =1f i out3 =150ma output voltage noise=125uvrms downloaded from: http:///
micrel, inc. mic5387 april 2010 6 m9999-041610-a functional characteristics downloaded from: http:///
micrel, inc. mic5387 april 2010 7 m9999-041610-a block diagram downloaded from: http:///
micrel, inc. mic5387 april 2010 8 m9999-041610-a application information mic5387 is a triple-output, low-noise 150ma ldo. the mic5387 regulator is fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. input capacitor the mic5387 is a high-performance, high-bandwidth device. an input capacitor of 1f is required from the input-to-ground to provide stability. low-esr ceramic capacitors provide optimal performance at a minimum of space. additional high-frequency capacitors C such as small-valued npo dielectric-type capacitors C help filter out high-frequency noise and are good practice in any rf-based circuit. x5r or x7r dielectrics are recommended for the input capacitor. y5v dielectrics lose most of their capacitance over temperature and are, therefore, not recommended. output capacitor the mic5387 requires an output capacitor of 1f or greater for each output to ma intain stability. the design is optimized for use with low-esr ceramic chip capacitors. high-esr capacitors are not recommended because they may cause high- frequency oscillation. the output capacitor can be increased, but performance has been optimized for a 1f ceramic output capacitor and does not improve significantly with larger capacitance. x7r/x5r dielectric-type ceramic capacitors are recommended because of their temperature performance. x7r-type capacitors change capacitance by 15% over their operat ing 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 operating 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. no-load stability unlike many other voltage regulators, the mic5387 will remain stable and in regulation with no load. this is especially important in cmos ram keep-alive applications. enable/shutdown the mic5387 comes with an active-high enable (en2/3) pin that allows the regulator to be disabled for outputs 2 and 3. forcing the enable pin high enables the output voltage. the active-high enable pin uses cmos technology and the enable pin cannot be left floating; a floating enable pin may cause an indeterminate state on the output. the output out1 does not have an enable pin and is always enabled when v in is above the minimum supply voltage of 2.5v. thermal considerations the mic5387 is designed to provide three outputs up to 150ma each of continuous current in a very small package. maximum ambient operating temperature can be calculated based on the output current and the voltage drop across the part. for example, if the input voltage is 3.3v and the output voltages are 1.8v, 2.8v and 2.8v each with an output current = 150ma. the actual power dissipation of the regulator circuit can be determined using the equation: p d = (v in ? v out1 ) i out1 + (v in ? v out2 ) i out2 + (v in ? v out3 ) i out3 + v in i gnd as the mic5387 is a cmos device, the ground current is typically < 100a over the load range, the power dissipation contributed by the ground current is < 1% and may be ignored for this calculation: p d = (3.3v ? 1.8v)150ma + (3.3v-2.8v)150ma + (3.3v ? 2.8v)150ma p d = 0.375w to determine the maximum ambient operating temperature of the package, use the junction-to-ambient thermal resistance of the device and the following basic equation: ?? ? ?? ? ? = ja a j d t t p (max) (max) t j(max) = 125c, the maximum junction temperature of the die, and ja thermal resistance = 92.4c/w for the thin mlf ? package. downloaded from: http:///
micrel, inc. mic5387 april 2010 9 m9999-041610-a substituting p d for p d(max) and solving for the ambient operating temperature will give the maximum operating conditions for the regulator circuit. the maximum power dissipation must not be exceeded for proper operation. for example, when operating the mic5387-sgfymt at an input voltage of 3.3v and 450ma load with a minimum footprint layout, the maximum ambient operating temperature t a can be determined as follows: 0.375w = (125c ? t a ) / (92.4c/w) t a = 90.35c therefore, the maximum ambient operating temperature of 90.35c is allowed in a 1.6mm x 1.6mm thin mlf ? package. for a full discussion of heat sinking and thermal effects on voltage regulators, refer to the regulator thermals section of micrels designing with low-dropout voltage regulators handbook. this information can be found on micrel's website at: http://www.micrel.com/_pdf/other/ldobk_ds.pdf downloaded from: http:///
micrel, inc. mic5387 april 2010 10 m9999-041610-a typical application bill of materials item part number manufacturer description qty. c1,c2,c3,c4 c1005x5r1a105k tdk (1) capacitor, 1f ceramic, 10v, x5r, size 0402 4 u1 mic5387-xxxymt micrel, inc. (2) ultra-small triple 150ma output ldo 1 notes: 1. tdk: www.tdk.com 2. micrel, inc.: www.micrel.com downloaded from: http:///
micrel, inc. mic5387 april 2010 11 m9999-041610-a pcb layout recommendations (1.6mm x 1.6mm thin mlf ? ) top layer bottom layer downloaded from: http:///
micrel, inc. mic5387 april 2010 12 m9999-041610-a package information 6-pin 1.6mm x 1.6mm thin mlf ? (mt) 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 the information furnished by micrel in this data sheet is belie ved to be accurate and reliable. however, no responsibility is a ssumed by micrel for its use. micrel reserves the right to change circuitry and specifications at any time without notification to the customer. micrel products are not designed or authori zed for use as components in life support app liances, devices or systems where malfu nction of a product can reasonably be expected to result in pers onal injury. life support devices or system s are devices or systems that (a) are in tended 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 significan t injury to the user. a purchasers use or sale of micrel produc ts for use in life support app liances, devices or systems is a purchasers own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2010 micrel , incor p orated. downloaded from: http:///

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