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mic5385 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 ? tel +1 ( 408 ) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micrel.com december 2009 m9999-122109-a general description the mic5385 is an advanced general purpose triple linear regulator offering high power supply rejection (psrr) in an ultra-small 2mm x 2mm 8 pin thin mlf ? package. the mic5385 is capable of sourcing 150ma for each output and offers high psrr making it an ideal solution for any portable electronic application. ideal for battery powered applic ations, the mic5385 offers 2% initial accuracy, low dropout voltage (180mv @ 150ma), and low ground current (typically 32a per output). the mic5385 can also be put into a zero-off-mode current state, drawing virtually no current when disabled. the mic5385 is available in a lead-free (rohs compliant) 2mm x 2mm 8 pin thin mlf ? occupying only 4mm 2 of pcb area, a 33% reduction in board area compared to a 3mm x 2mm thin mlf ? package. the mic5385 has an operating junction temperature range of ?40c to 125c. datasheets and support documentation can be found on micrel?s 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 ? 2% initial accuracy ? thermal shutdown and current limit protection ? available in tiny 2mm x 2mm thin mlf ? applications ? mobile phones ? digital cameras ? gps, pdas, pmp, handhelds ? portable electronics ___________________________________________________________________________________________________________ typical application
micrel, inc. mic5385 december 2009 2 m9999-122109-a ordering information part number marking code v out1 v out2 v out3 temperature range package MIC5385-SGFYMT zn1 3.3v 1.8v 1.5v ?40c to +125c 8-pin 2mm x 2mm 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 fini sh is nipdau. mold compound is halogen free. pin configuration 8-pin 2mm x 2mm thin mlf ? (mt) pin description pin number pin names pin function 1 en3 enable input 3: enables ldo3, active high. high = on; low = off. do not leave floating. 2 in input supply for ldo1, 2 and 3. 3 en2 enable input 2: enables ldo2, active high. high = on; low = off. do not leave floating. 4 en1 enable input 1: enables ldo1, active high. high = on; low = off. do not leave floating. 5 out2 output voltage for ldo2. 6 out1 output voltage for ldo1. 7 out3 output voltage for ldo3. 8 gnd ground for ldo1, 2 and 3. ep hs pad exposed heastsink pad. (connect to ground plane for best thermal).
micrel, inc. mic5385 december 2009 3 m9999-122109-a absolute maximum ratings (1) supply voltage (v in ) ........................................... -0.3v to 6v enable voltage (v en )..........................................-0.3 v to v in power dissipation (p d ) ........................... internally limited (3) lead temperature (solde ring, 3se c)........................ 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 en ).............................................. 0v to v in junction temperature (t j ) ........................ ?40c to +125c junction thermal resistance 2mm x 2mm thin mlf ? ( ja ).............................90c/w electrical characteristics (5) v in = v en1 = v en2 = v en3 = 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 ?2.0 +2.0 % output voltage accuracy variation from nominal v out ; ?40c to +125c ?3.0 +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 out > 1.3v, single output enabled 32 a ground pin current (8) i out = 0ma; v out > 1.3v, v en1 =v en2 = v en3 1.2v 96 120 a ground pin current in shutdown v en 1=v en 2= v en 3 0.2v 0.05 1 a f = up to 1khz; c out = 1f; v out < 2.5v 70 db ripple rejection f = 1khz ? 10khz; c out = 1 f; v out < 2.5v 50 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 low 0.2 v enable input voltage en1, en2, en3 logic high 1.2 v v il 0.2v 0.01 1 a enable input current en1, en2, en3 v ih 1.2v 0.01 1 a turn-on time 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) ? 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 total current drawn from the supply is the sum of the load curre nt plus the ground pin current.
micrel, inc. mic5385 december 2009 4 m9999-122109-a typical characteristics power supply rejection ratio -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 1000000 frequency(hz) gain (db) 150ma 100a v out = 1.5v c out = 1f output voltage vs. supply voltage (v out = 3.3v) 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 v en1 = v in c in = c out1 = 1f v out1 = 3.3v output voltage vs supply voltage (v out = 1.8v) 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) v en2 = v in v out2 = 1.8v c in = c out2 = 1f 1ma 150ma 50ma output voltage vs supply voltage (v out = 1.5v) 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) v en3 = v in v out3 = 1.5v c in = c out3 = 1f 1ma 50ma 150ma ground current vs temperature (single output) 25 27 29 31 33 35 37 39 41 -40 -20 0 20 40 60 80 100 120 te mpe rature (c) ground current (a) 100a 50ma 150ma v in = v en1 = 4.3v v en2 = v en3 = 0v v out1 = 3.3v c out1 = 1f dropout voltage vs temperature 0 20 40 60 80 100 120 140 160 180 200 -40 -20 0 20 40 60 80 100 120 temperature (c) dropout voltage (mv) 150ma 100ma 50ma 10ma ground current vs supply voltage (single output) 28 30 32 34 36 38 40 42 2.5 3 3.5 4 4.5 5 5.5 supply voltage(v) ground current (a) v in = v en2 v en1 = v en3 = 0v v out2 = 1.8v c in = c out2 = 1f 50ma 100a 150ma ground current vs supply voltage (single output) 28 30 32 34 36 38 40 42 2.5 3 3.5 4 4.5 5 5.5 supply voltage(v) ground current (a) 150ma 100a 50ma v in = v en3 v en1 = v en2 = 0v v out3 = 1.5v c in = c out3 = 1f ground current vs supply voltage (all outputs) 90 95 100 105 110 115 120 2.5 3 3.5 4 4.5 5 5.5 supply voltage(v) ground current (a) v in = v en1 = v en2 = v en3 v out1 = 3.3v, v out2 = 1.8v, v out3 = 1.5v c in = c out1 = c out2 = c out3 = 1f 150ma 50ma 100a dropout voltage vs output current 0 20 40 60 80 100 120 140 160 0 25 50 75 100 125 150 output current (ma) dropout voltage (mv) v out1 = 3.3v c in = c out1 = 1f output voltage vs temperature (v out = 3.3v) 3 3.1 3.2 3.3 3.4 3.5 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature (c) output voltage(v) v in = v en1 = v out1 +1v v out1 = 3.3v c in = c out1 = 1f i out1 = 150ma output voltage vs temperature (v out = 1.8v) 1.4 1.6 1.8 2 2.2 -40 -25 -10 5 20 35 50 65 80 95 110 125 temperature (c) output voltage (v) v in = v en2 = v out2 +1v v out2 = 1.8v c in = c out2 = 1f i out2 = 150ma
micrel, inc. mic5385 december 2009 5 m9999-122109-a typical characteristics (continued) output voltage vs temperature (v out = 1.5v) 1.3 1.4 1.5 1.6 1.7 -40 -20 0 20 40 60 80 100 120 temperature (c) output voltage(v) v in = v en3 = v out3 +1v v out3 = 1.5v c in = c out3 = 1f i out3 = 150ma output noise spectral density 0.001 0.01 0.1 1 10 100 1,000 10,000 100,000 1,000,000 frequency (hz) noise v/ hz v in = v en3 = 5.38v v out3 = 1.5v c out3 = 1f i out3 = 100a output voltage- noise=152vrms output noise spectral density 0.01 0.1 1 10 100 1,000 10,000 100,000 1,000,000 frequency (hz) noise v/ hz v in = v en3 = 5.36v v out3 = 1.5v c out3 = 1f i out3 = 150ma output vol tage noise = 127vrms current limit vs. input voltage 300 320 340 360 380 400 420 440 460 23456 input voltage (v) current limit (ma) v en1 = v en2 = v en3 = v in c in = c out1 = c out2 = c out3 = 1f v out3 = 1.5v v out2 = 1.8v v out1 = 3.3v
micrel, inc. mic5385 december 2009 6 m9999-122109-a functional characteristics
micrel, inc. mic5385 december 2009 7 m9999-122109-a
micrel, inc. mic5385 december 2009 8 m9999-122109-a block diagram
micrel, inc. mic5385 december 2009 9 m9999-122109-a application information mic5385 is a triple output low noise 150ma ldo. the mic5385 regulator is fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. input capacitor the mic5385 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, such as small-valued npo dielectric-type capacitors, 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 mic5385 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 equiva lent operating temperature range. no-load stability unlike many other voltage regulators, the mic5385 will remain stable and in regulation with no load. this is especially important in cmos ram keep-alive applications. enable/shutdown the mic5385 comes with an active-high enable pin that allows the regulator to be disabled. forcing the enable pin low disables the regulator and sends it into a ?zero? off-mode-current state. in th is state, current consumed by the regulator goes nearly to zero. 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. thermal considerations the mic5385 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 3.6v and the output voltages are 3.3v,1.8v, and 1.5v 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 out + v in i gnd as the mic5385 is a cmos device, the ground current is typically <100a over the load range, the power dissipation contributed by t he ground current is < 1% and may be ignored for this calculation. p d = (3.6v ? 3.3v)150ma+(3.6v-1.8v)150ma+ (3.6v-1.5v)150ma p d = 0.63w 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(max) d(max) t t p t j(max) = 125c, the maximum junction temperature of the die, and ja thermal resistance = 90c/w for the thin mlf ? package. 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.
micrel, inc. mic5385 december 2009 10 m9999-122109-a for example, when operating the MIC5385-SGFYMT at an input voltage of 3.6v and 450ma load with a minimum footprint layout, the maximum ambient operating temperature t a can be determined as follows: 0.63w = (125c ? t a )/(90c/w) t a = 68.3c/w therefore, the maximum ambient operating temperature of 68.3c is allowed in a 2mm x 2mm thin mlf ? package. for a full discussion of heat sinking and thermal effects on voltage regulators, refer to the ?regulator thermals? section of micrel?s 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
micrel, inc. mic5385 december 2009 11 m9999-122109-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 MIC5385-SGFYMT micrel, inc. (2) high performance triple 150ma ldo 1 notes: 1. tdk: www.tdk.com 2. micrel, inc.: www.micrel.com
micrel, inc. mic5385 december 2009 12 m9999-122109-a pcb layout recommendations (2mm x 2mm thin mlf ? ) top layer bottom layer
micrel, inc. mic5385 december 2009 13 m9999-122109-a package information 8-pin 2mm x 2mm 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 purchaser?s use or sale of micrel produc ts for use in life support app liances, 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. ? 2009 micrel , incor p orated.

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