mic5335 dual, high performance 300ma cap uldo? uldo is a trademark of micrel, inc. mlf and micro lead frame are registered trademarks of amkor technologies. 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 may 2008 m9999-051508 general description the mic5335 is a high current density, dual ultra low dropout (uldo?) linear regu lator. the mic5335 is ideally suited for portable electronics which demand overall high performance in a very small form factor. the mic5335 is offered in the ultra small 1.6mm x 1.6mm x 0.55mm 6-ld thin mlf ? package, which is only 2.56mm 2 in area. the mic5335 delivers exceptional thermal performance for those applications that demand higher power dissipation in a very small foot print. in addition, the mic5335 integrates two high performance 300ma ldos with independent enable functions and offers high psrr eliminating the need for a bypass capacitor. the mic5335 is a cap design which enables operation with very small output capacitors for stability, thereby reducing required board space and component cost. the mic5335 is available in fixed-output voltages. additional voltages are available. for more information, contact micrel?s marketing department. data sheets and support documentation can be found on micrel?s web site at: www.micrel.com. features ? 2.3v to 5.5v input voltage range ? ultra-low dropout voltage: 75mv at 300ma ? ultra small 1.6mm x 1.6mm x 0.55mm 6 lead mlf ? package ? independent enable pins ? high psrr > 65db @ 1khz ? 300ma output current per ldo ? cap stable with 1f ceramic capacitor ? low quiescent current: 90a/ldo ? fast turn-on time: 30s ? thermal shutdown protection ? current limit protection applications ? mobile phones ? pdas ? gps receivers ? portable electronics ? portable media players ? digital still an d video cameras typical application
micrel, inc. mic5335 may 2008 2 m9999-051508 mic5335 block diagram
micrel, inc. mic5335 may 2008 3 m9999-051508 ordering information part number manufacturing part number marking voltage* junction temp. range package mic5335-1.8/1.5ymt mic5335-gfymt gpf 1.8v/1 .5v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-1.8/1.6ymt mic5335-gwymt gpw 1.8v/1 .6v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-1.8/1.8ymt mic5335-ggymt gpg 1.8v/1 .8v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.5/1.8ymt mic5335-jgymt jpg 2.5v/1 .8v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.5/2.5ymt mic5335-jjymt jpj 2.5v/2 .5v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.6/1.85ymt mic5335-kdymt kpd 2.6v/1 .85 ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.6/1.8ymt mic5335-kgymt kpg 2.6v/1 .8v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.7/2.7ymt mic5335-llymt lpl 2.7v/2 .7v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.8/1.5ymt mic5335-mfymt mpf 2.8v/1 .5v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.8/1.8ymt mic5335-mgymt mpg 2.8v/1 .8v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.8/2.6ymt mic5335-mkymt mpk 2.8v/2 .6v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.8/2.8ymt mic5335-mmymt mpm 2.8v/2 .8v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.85/1.85ymt mic5335-ndymt npd 2.85v/1 .85v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.85/2.6ymt mic5335-nkymt npk 2.85v/2 .6v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.85/2.85ymt mic5335-nnymt npn 2.85v/2 .85v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.9/1.5ymt mic5335-ofymt opf 2.9v/1 .5v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.9/1.8ymt mic5335-ogymt opg 2.9v/1 .8v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-2.9/2.9ymt mic5335-ooymt opo 2.9v/2 .9v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.0/1.8ymt mic5335-pgymt ppg 3.0v/1 .8v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.0/2.5ymt mic5335-pjymt ppj 3.0v/2 .5v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.0/2.6ymt mic5335-pkymt ppk 3.0v/2 .6v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.0/2.8ymt mic5335-pmymt ppm 3.0v/2 .8v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.0/2.85ymt mic5335-pnymt ppn 3.0v/2 .85v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.0/3.0ymt mic5335-ppymt ppp 3.0v/3 .0v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/1.5ymt mic5335-sfymt spf 3.3v/1 .5v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/1.8ymt mic5335-sgymt spg 3.3v /1.8v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/2.5ymt mic5335-sjymt spj 3.3v/2 .5v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/2.6ymt MIC5335-SKYMT spk 3.3v/2 .6v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/2.7ymt mic5335-slymt spl 3.3v/2 .7v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/2.8ymt mic5335-smymt spm 3.3v/2 .8v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/2.85ymt mic5335-snymt spn 3.3v/2 .85v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/2.9ymt mic5335-soymt spo 3.3v/2 .9v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/3.0ymt mic5335-spymt spp 3.3v/3 .0v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/3.2ymt mic5335-srymt spr 3.3v/3 .2v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? mic5335-3.3/3.3ymt mic5335-ssymt sps 3.3v/3 .3v ?40c to +125c 6-pin 1.6x1.6 thin mlf ? note: * for other voltages available. contact micrel marketing for details.
micrel, inc. mic5335 may 2008 4 m9999-051508 pin configuration 1 vin gnd en2 6 vout1 vout2 en1 5 4 2 3 6-pin 1.6mm 1.6mm thin mlf ? top view pin description pin number thin mlf-6 pin name pin function 1 vin supply input. 2 gnd ground 3 en2 enable input (regulator 2). active high input. logic high = on; logic low = off; do not leave floating. 4 en1 enable input (regulator 1). active high input. logic high = on; logic low = off; do not leave floating. 5 vout2 regulator output ? ldo2 6 vout1 regulator output ? ldo1 hs pad epad exposed heatsink pad connected to ground internally.
micrel, inc. mic5335 may 2008 5 m9999-051508 absolute maximum ratings (1) supply voltage (v in ) .....................................0v to +6v enable input voltage (v en )...........................0v to +6v power dissipation...........................in ternally limited (3) lead temperature (sol dering, 3s ec ...................260c storage temperature (t s ) ................. -65c to +150c esd rating (4) .........................................................2kv operating ratings (2) supply voltage (v in )............................... +2.3v to +5.5v enable input voltage (v en ).............................. 0v to v in junction temperature ......................... -40c to +125c junction thermal resistance thin mlf ? -6 ( ja ) ................................... 100c/w electrical characteristics (5) v in = en1 = en2 = v out + 1.0v; higher of the two regulator outputs, i outldo1 = i outldo2 = 100a; c out1 = c out2 = 1f; t j = 25c, bold values indicate ?40c t j +125c, unless noted. parameter conditions 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 0.6 %/v %/v load regulation i out = 100a to 300ma 0.3 2.0 % dropout voltage ( note 6 ) i out = 100a i out = 100ma i out = 150ma i out = 300ma 0.1 25 35 75 75 100 200 mv mv mv mv ground current en1 = high; en2 = low; i out = 100a to 300ma en1 = low; en2 = high; i out = 100a to 300ma en1 = en2 = high; i out1 = 300ma, i out2 = 300ma 90 90 150 125 125 220 a a a ground current in shutdown en1 = en2 = 0v 0.01 2 a ripple rejection f = 1khz; c out = 1.0f f = 20khz; c out = 1.0f 65 45 db current limit v out = 0v 340 550 950 ma output voltage noise c out = 1.0f; 10hz to 100khz 90 v rms enable inputs (en1 / en2) logic low 0.2 v enable input voltage logic high 1.1 v v il 0.2v 0.01 1 a enable input current v ih 1.0v 0.01 1 a turn-on time (see timing diagram) turn-on time (ldo1 and 2) c out = 1.0f 30 100 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 te mperature, and the regulator will go into thermal shutdown. 4. devices are esd sensitive. handling precautions re commended. human body model, 1.5k in series with 100pf. 5. specification for packaged product only. 6. dropout voltage is defined as the input-to-output different ial at which the output voltage drops 2% below its nominal v out . for outputs below 2.3v, the dropout voltage is the input-to-output differential with the minimum input voltage 2.3v.
micrel, inc. mic5335 may 2008 6 m9999-051508 typical characteristics
micrel, inc. mic5335 may 2008 7 m9999-051508 functional characteristics
micrel, inc. mic5335 may 2008 8 m9999-051508 applications information enable/shutdown the mic5335 comes with dual active-high enable pins that allow each regulator to be enabled independently. forcing the enable pin low disables the regulator and sends it into a ?zero? off-m ode-current state. in this 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 stat e on the output. input capacitor the mic5335 is a high-performance, high bandwidth device. therefore, it requ ires a well-bypassed input supply for optimal performance. a 1f capacitor is required from the input-to-gr ound 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. output capacitor the mic5335 requires an out put capacitor of 1f or greater to maintain stability. the design is optimized for use with low-esr ceramic chip capacitors. high esr capacitors 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 t heir operating temperature range and are the most stable type of ceramic capacitors on the market. z5u and y5v dielectric capacitors change value by as much as 50% and 60%, respectively, over t heir 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 voltag e regulators, the mic5335 will remain stable and in regul ation with no load. this is especially important in cmos ram keep-alive applications. thermal considerations the mic5335 is designed to provide 300ma of continuous current for both outputs in a very small package. maximum ambient operating temperature can be calculated based upon the output current and the voltage drop across the part. given that the input voltage is 3.3v, the output voltage is 2.8v for v out1 , 2.5v for v out2 and the output current = 300ma. 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 i gnd because this device is cmos and the ground current is typically <100a over the load range, the power dissipation contributed by the ground current is < 1% and can be ignored for this calculation. p d = (3.3v ? 2.8v) 300ma + (3.3v ? 2.5v) 300ma p d = 0.39w 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 ja thermal resistance = 100c/w. the table that follows shows junction-to-ambient thermal resistance for the mic5335 in the thin mlf ? package. package ja recommended minimum footprint jc 6-pin 1.6 x1.6 thin mlf? 100c/w 2c/w thermal resistance substituting p d for p d(max) and solving for the ambient operating temperature w ill give the maximum operating conditions for t he regulator circuit. the junction-to-ambient thermal resistance for the minimum footprint is 100c/w. the maximum power dissipation must not be exceeded for proper operation. for example, when operating the mic5335-mfyml at an input voltage of 3.3v and 300ma loads on each output with a minimum footprint layout, the maximum ambient operating temperature t a can be determined as follows: 0.39w = (125c ? t a )/(100c/w)
micrel, inc. mic5335 may 2008 9 m9999-051508 t a =86c therefore, a 2.8v/2.5v appl ication with 300ma at each output current can accept an ambient operating temperature of 86c 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? subsection 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. mic5335 may 2008 10 m9999-051508 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 as sumed by micrel for its use. micrel reserves the right to change circuitry and specificati ons 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 personal injury. li fe 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 resul t in a significant injury to the user. a purchaser?s use or sale of micrel products for use in life s upport appliances, devices or systems is a pu rchaser?s own risk and purchaser agrees to fully indemnify micrel fo r any damages resulting from such use or sale. ? 2006 micrel, inc.
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