mic5302 150ma uldo? in ultra small 1.2mm x 1.6mm thin mlf ? uldo is a trademark of micrel, inc. 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 may 2008 m9999-051508-e general description the mic5302 is an ultra small, ultra low dropout cmos regulator, uldo? that is ideal for today?s most demand- ing portable applications including cellular phone rf power, camera modules, imaging sensors for digital still and video cameras, pdas, port able media players (pmp) and pc cameras where board space is limited. it offers extremely low dropout voltage, very low output noise and can operate from a 2.3v to 5. 5v input while delivering up to 150ma. it offers 2% initial accuracy, low ground current (typically 85a total), thermal and current limit protection. the mic5302 can also be put into a zero-off-mode current state, drawing no current when disabled. the mic5302 is available in the ultra small 4-pin 1.2mm x 1.6mm thin mlf ? package, occupying only 1.92mm 2 of pcb area, a 50% reduction in board area compared to sc-70 and 2mm x 2mm mlf ? packages. it?s operating junction temperature range is ?40c to +125c and is available in fixed output voltages in lead-free (rohs compliant) thin mlf ? package. data sheets and support doc umentation can be found on micrel?s web site at www.micrel.com. features ? ultra small 1.2mm x 1.6mm thin mlf ? package ? low dropout voltage: 50mv at 150ma ? output noise 120vrms ? input voltage range: 2.3v to 5.5v ? 150ma guaranteed output current ? stable with ceramic output capacitors ? low quiescent current 85a total ? 35s turn-on time ? high output accuracy ? 2% initial accuracy ? 3% over temperature ? thermal shutdown and current limit protection applications ? mobile phones ? pdas ? gps receivers ? portable media players ? portable electronics ? digital still & video cameras typical application vout vin en gnd 1f 1f mic5302-x.xymt rf ldo application 0 10 20 30 40 50 60 0 25 50 75 100 125 150 output current (ma) dropout voltage vs. output current v out = 2.8v c out = 1f
micrel, inc. mic5302 may 2008 2 m9999-051508-e block diagram v in en vout gnd current limit ldo quick- start v ref thermal shutdown error amp mic5302 block diagram
micrel, inc. mic5302 may 2008 3 m9999-051508-e ordering information (1) part number marking code voltage temperature range package lead finish mic5302-1.3ymt h13 1.3v ?40c to +1 25c 4-pin 1.2mm x 1.6mm thin mlf ? pb-free mic5302-1.5ymt h15 1.5v ?40c to +1 25c 4-pin 1.2mm x 1.6mm thin mlf ? pb-free mic5302-1.8ymt h18 1.8v ?40c to +1 25c 4-pin 1.2mm x 1.6mm thin mlf ? pb-free mic5302-2.1ymt h21 2.1v ?40c to +1 25c 4-pin 1.2mm x 1.6mm thin mlf ? pb-free mic5302-2.5ymt h25 2.5v ?40c to +1 25c 4-pin 1.2mm x 1.6mm thin mlf ? pb-free mic5302-2.8ymt h28 2.8v ?40c to +1 25c 4-pin 1.2mm x 1.6mm thin mlf ? pb-free mic5302-2.85ymt h2j 2.85v ?40c to +1 25c 4-pin 1.2mm x 1.6mm thin mlf ? pb-free mic5302-2.9ymt h29 2.9v ?40c to +1 25c 4-pin 1.2mm x 1.6mm thin mlf ? pb-free mic5302-3.0ymt h30 3.0v ?40c to +1 25c 4-pin 1.2mm x 1.6mm thin mlf ? pb-free mic5302-3.3ymt h33 3.3v ?40c to +1 25c 4-pin 1.2mm x 1.6mm thin mlf ? pb-free note : 1. other voltages available. c ontact micrel marketing for details. pin configuration 1 2 4 3 vout vin en gnd 4-pin 1.2mm x 1.6mm thin mlf ? (mt) pin description pin number pin name pin function 1 en enable input. active high. high = on, low = off. do not leave floating. 2 gnd ground 3 vin supply input 4 vout output voltage hs pad epad exposed heatsink pad connected to ground internally.
micrel, inc. mic5302 may 2008 4 m9999-051508-e absolute maximum ratings (1) supply voltage (v in ) ............................................. 0v to +6v enable input (v en ) ................................................ 0v to +6v power dissipation (3) ...................................inter nally limited lead temperature (solde ring, 5 se c.) ........................ 260c junction temperature (t j ) ........................?40c to +125c storage temperature (t s ) .........................?65c to +150c operating ratings (2) supply voltage (v in ) ..................................... +2.3v to +5.5v enable input (v en ) .................................................. 0v to v in junction temperature (t a ) ........................ ?40c to +125c junction thermal resistance thin mlf ? -4 ( ja ) ...........................................173 c/w electrical characteristics (4) v in = v out + 1v; c out = 1.0f; i out = 100a; t j = 25c, bold values indicate ?40c to +125c, unless noted. parameter condition min typ max units variation from nominal v out ?2 +2 % output voltage accuracy variation from nominal v out ; ?40c to +125c ? 3 +3 % line regulation v in = v out +1v to 5.5v; i out = 100a 0.02 0.3 0.6 %/v load regulation (5) i out = 100a to 150ma 0.5 2.0 % dropout voltage (6) i out = 100a i out = 50ma i out = 100ma i out = 150ma 0.1 15 30 50 35 100 mv mv mv mv ground pin current (7) i out = 0 to 150ma, en = high 85 120 a ground pin current in shutdown v en = 0v 0.1 2 a ripple rejection f = up to 1khz; c out = 1.0f f = 1khz ? 20khz; c out = 1.0f 65 42 db db current limit v out = 0v 250 400 725 ma output voltage noise c out =1f, 10hz to 100khz 120 v rms enable input 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 c out = 1.0f 35 100 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 temper ature, and the regulator will go into thermal shutdown. 4. specification for packaged product only. 5. regulation is measured at constant junction temperature using lo w duty cycle pulse testing, changes in output voltage due t o heating effects are covered by the thermal regulation specification. 6. dropout voltage is defined as the input-to-output differentia l at which the output voltage drops 2% below its nominal value measured at 1v differential. 7. ground pin current is the regulator quiescent current. the to tal current drawn from the supply is the sum of the load curre nt plus the ground pin current.
micrel, inc. mic5302 may 2008 5 m9999-051508-e typical characteristics 0 10 20 30 40 50 60 70 80 90 100 0 25 50 75 100 125 150 output current (ma) ground pin current vs. output current c out = 1f v out = 2.8v v in = v out + 1v 70 72 78 80 82 84 86 88 90 ground pin current vs. temperature 20 40 60 80 temperature (c) v in = v out + 1v v out = 2.8v c out = 1f 74 76 100a 150ma 0 10 20 30 40 50 60 70 80 90 100 3.0 3.5 4.0 4.5 5.0 5.5 supply voltage (v) ground pin current vs. supply voltage 100a 150ma 0 -10 -20 -30 -40 -50 -60 -70 -80 power supply rejection ratio frequency (khz) 1 0.1 10 100 1,000 v in = v out + 1v v out = 2.8v c out = 1f 50ma 150ma 50 60 70 80 90 dropout voltage vs. temperature 20 40 60 80 temperature (c) v out = 2.8v c out = 1f 100a 50ma 150ma 100ma 0 10 20 30 40 0 10 20 30 40 50 60 0 25 50 75 100 125 150 output current (ma) dropout voltage vs. output current v out = 2.8v c out = 1f 2.77 2.78 2.79 2.80 2.81 2.82 2.83 0 25 50 75 100 125 150 output current (ma) output voltage vs. output current c out = 1f v out = 2.8v v in = v out + 1v 0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 0123456 supply voltage (v) output voltage vs. supply voltage 100a 150ma c out = 1f v out = 2.8v 2.50 2.55 2.60 2.65 2.70 2.75 2.85 2.90 2.95 3.00 output voltage vs. temperature 20 40 60 80 temperature (c) v in = v out + 1v v out = 2.8v c out = 1f i out = 100a 2.80 350 360 370 380 390 400 410 420 430 440 450 3.0 3.5 4.0 4.5 5.0 5.5 input voltage (v) current limit vs. input voltage v out = 2.8v c out = 1f 0.001 0.01 0.1 1 10 output noise spectral density 1 frequency (khz) 0.1 0.01 10 100 1,000 v in = v out + 1v v out = 2.8v c out = 1f
micrel, inc. mic5302 may 2008 6 m9999-051508-e functional characteristics enable turn-on enable (1v/div) output volta g e (1v/div) time (10s/div) v in = v out + 1v v out = 2.8v c out = 1f load transient response output volta g e (20mv/div) output current (50ma/div) time (40s/div) v in = v out + 1v v out = 2.8v c out = 1f 150ma line transient response input volta g e (2v/div) output volta g e (50mv/div) time (40s/div) v in = v out + 1v v out = 2.8v c out = 1f i out = 10ma 5v 4v
micrel, inc. mic5302 may 2008 7 m9999-051508-e application information enable/shutdown the mic5302 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. input capacitor the mic5302 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-g round to provide stability. low-esr ceramic capacitors provide optimal perfor- mance 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 mic5302 requires an output 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 incr eased, 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 mic5302 will remain stable and in regulation with no load. this is especially important in cmos ram keep-alive applications. thermal considerations the mic5302 is designed to provide 150ma of continuous current. maximum ambient operating temperature can be calculated based on the output current and the voltage drop across the part. given that the input voltage is 3.6v, the output voltage is 2.8v and the output current = 150ma. the actual power dissipation of the regulator circuit can be determined using the equation: p d = (v in ? v out ) i out + 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 = (3.6v ? 2.8v) 150ma p d = 0.12w 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: p d(max) = t j(max) - t a ja ? ? t j(max) = 125c, the maximum junction temperature of the die ja thermal resistance = 173c/w. the table below shows junc tion-to-ambient thermal resistance for the mic5302 in the 4-pin 1.2mm x 1.6mm mlf ? package. package ja recommended minimum footprint 4-pin 1.2x1.6 mlf ? 173c/w thermal resistance 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 junction-to- ambient thermal resistance for the minimum footprint is 173c/w. the maximum power dissipati on must not be exceeded for proper operation. for example, when operat ing the mic5302-2.8yml at an input voltage of 3.6v and 150ma load with a minimum footprint layout, the maximum ambient operating temperature t a can be determined as follows: 0.12w = (125c ? t a )/(173c/w) t a =104c therefore, a 2.8v applicati on with 150ma of output current can accept an ambient operating temperature of 104c in a 1.2mm x 1.6mm mlf ? package. for a full discussion of heat sinking and thermal effects on voltage regulators, refer to the ?regul ator 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. mic5302 may 2008 8 m9999-051508-e package information 4-pin 1.2mm 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 personal injury. life suppo rt devices or systems are devices or systems that (a) are int ended 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. ? 2006 micrel, incorporated.
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