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mic5264 150ma cap dual ldo regulator micro leadframe and mlf are 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 2006 m9999-052406 (408) 955-1690 general description the mic5264 is a dual 150ma ldo in tiny 2.5mm x 2.5mm mlf ? packaging ideal for applications where cost is the priority. the mic5264 is ideal for any application in portable electronics, including both rf and digital applications. with low output noise and high psrr, the mic5264 is ideal for noise sensitive rf applications. while the fast transient response and active shutdown circuitry makes it well-suited for powering digital circuitry. the mic5264 has a 2.7v to 5.5v input operating voltage range, making it ideal for operation from a single cell lithium ion battery or fixed 3.3v and 5v systems. each ldo is completely independent and can be powered independently, making it easier to use in distributed power applications. the mic5264 offers low dropout voltage (210mv at 150ma), low output noise (57vrms), high psrr and integrates an active shutdown circuit on the output of each regulator to discharge the ou tput voltage when disabled. data sheets and supporting documentation can be found on micrel?s web site at: www.micrel.com features ? 2.7v to 5.5v supply voltage. ? low 75a quiescent current per ldo. ? tiny 2.5mm x 2.5mm mlf ? package. ? low noise ? 57vrms. ? high psrr ? 60db at 1khz. ? low dropout voltage ? 210mv at 150ma. ? stable with ceramic output capacitors. ? independent enable pins. ? fast transient response. ? active shutdown on both outputs. applications ? cellular telephones ? pdas ? gps receivers typical application mic5264-xxyml en 2 vin 1 out 1 byp1 gnd vin 2 en 1 byp2 out 2 rx/synth tx rf transceiver 0.01f 1f 1f 1f 0.01f rf power supply 0 -10 -20 -40 -50 -60 -70 0.01 0.1 1 10 100 1000 frequency (khz) power supply rejection ratio -30 -80 v in = v out + 1v v out = 3.0v byp = 0.1f c out = 1f 100ma 150ma 50ma
micrel, inc. mic5264 may 2006 2 m9999-052406 (408) 955-1690 ordering information part number full manufacturing vo1/vo2 marking code junction temp. range package pb-free mic5264-2.5/1.8yml MIC5264-JGYML 2.5v/1.8v majg ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.6/1.8yml mic5264-kgyml 2.6v/1.8v makg ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.6/2.6yml mic5264-kkyml 2.6v/2.6v makk ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.8/1.5yml mic5264-mfyml 2.8v/1.5v mamf ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.8/2.5yml mic5264-mjyml 2.8v/2.5v mamj ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.8/2.6yml mic5264-mkyml 2.8v/2.6v mamk ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.8/2.8yml mic5264-mmyml 2.8v/28v mamm ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.85/1.8yml mic5264-ngyml 2.85v/1.8v mang ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.85/2.85yml mic5264-nnyml 2.85v/2.85v mann ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.9/1.5yml mic5264-ofyml 2.9v/1.5v maof ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.9/1.8yml mic5264-ogyml 2.9v/1.8v maog ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-2.9/2.6yml mic5264-okyml 2.9v/2.6v maok ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-3.0/1.8yml mic5264-pgyml 3.0v/1.8v mapg ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-3.0/2.5yml mic5264-pjyml 3.0v/2.5v mapj ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-3.0/2.8yml mic5264-pmyml 3.0v/2.8v mapm ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-3.0/3.0yml mic5264-ppyml 3.0v/3.0v mapp ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-3.3/1.8yml mic5264-sgyml 3.3v/1.8v masg ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-3.3/2.5yml mic5264-sjyml 3.3v/2.5v masj ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-3.3/3.0yml mic5264-spyml 3.3v/3.0v masp ?40c to +125c 2.5mm x 2.5mm mlf ? mic5264-3.3/3.3yml mic5264-ssyml 3.3v/3.3v mass ?40c to +125c 2.5mm x 2.5mm mlf ? note: 1. other voltage combinations avail able. contact micrel for details.
micrel, inc. mic5264 may 2006 3 m9999-052406 (408) 955-1690 pin configuration en2 gnd2 5 1 gnd1 in1 out1 byp2 10 en1 byp1 out2 in2 9 8 7 2 3 4 6 2.5mm 2.5mm mlf-10l (ml) pin description pin number pin name pin function 1 gnd1 ground 2 in1 supply voltage 3 out1 regulator output 4 byp2 reference bypass: connect external 0.01f <= c byp <= 1.0f capacitor to gnd to reduce output nois e. do not leave open. 5 en2 enable/shutdown (input): cmos compat ible input. logic high = enable; logic low = shutdown. do not leave open. 6 gnd2 ground 7 in2 supply voltage 8 out2 regulator output 9 byp1 reference bypass: connect external 0.01f <= c byp <= 1.0f capacitor to gnd to reduce output nois e. do not leave open. 10 en1 enable/shutdown (input): cmos compat ible input. logic high = enable; logic low = shutdown. do not leave open. ep exposed pad exposed pad. connect to external ground pins.
micrel, inc. mic5264 may 2006 4 m9999-052406 (408) 955-1690 absolute maximum ratings (1) supply input voltage (v in1/in2 ) .............................. 0v to +7v enable input voltage (v en1/en2 )............................ 0v to +7v power dissipation (p d ) .......................... interna lly limited (3) junction temperature (t j ) ...........................-40c to 125c lead temperature (soldering, #sec.)...........-55c to 150c storage temperature (t s ) .......................................... 260c eds rating (4) ................................................................. 2kv operating ratings (2) supply input voltage (v in1/in2 ) ...................... +2.7v to +5.5v enable input voltage (v en1/en2 ) ............................ 0v to +v in junction temperature (t a ) ........................ ?40c to +125c junction thermal resistance mlf-10l ( ja ) ....................................................75c/w electrical characteristics (5) v en = v in = v out + 1v; i l =100a; c l = 1.0f; c byp = 0.01f per output; t a = 25c, bold values indicate ?40c< t a < +85c; unless noted. parameter condition min typ max units output voltage accuracy i out = 100ua -2 -3 2 3 % % line regulation v in = v out +1v to 5.5v 0.05 0.2 % load regulation i out = 0.1ma to 150ma 2 3 % dropout voltage i out = 50ma i out = 150ma 75 210 500 mv mv quiescent current v en < 0.4v 0.2 2 a ground pin current (per regulator) i out = 0ma i out = 150ma 75 80 120 150 a a psrr (ripple rejection) f = 100hz, c byp = 0.1f, i load = 50ma f = 1khz, c byp = 0.1f, i load = 50ma f = 10khz, c byp = 0.1f, i load = 50ma 62 64 64 db db db current limit v out = 0v 225 ma output noise c out = 1.0f, c byp = 0.1f, f = 10hz to 100khz 57 v (rms) enable input (en1 and en2) enable input logic low v in = 2.7v to 5.5v, regulator shutdown 0.2 v enable input logic high v in = 2.7v to 5.5v, regulator enabled 1.6 v enable input current v il < 0.4v, regulator shutdown v ih > 1.6v, regulator enabled 0.01 0.01 a a thermal shutdown thermal shutdown temperature 150 c hysteresis 10 c turn-on/turn-off characteristics turn-on time 40 150 s discharge resistance 500 ? 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 temperature, and the regulator will go into thermal shutdown. the ja of the mic5264x.xyml (all versions) is 75c/w on a pc board (see ?thermal consider ations? section for further details). 4. devices are esd sensitive. handli ng precautions recommended. human body model, 1.5k in series with 100pf. 5. specification for packaged product only.
micrel, inc. mic5264 may 2006 5 m9999-052406 (408) 955-1690 typical characteristics 0 -10 -20 -40 -50 -60 -70 0.01 0.1 1 10 100 1000 frequency (khz) power supply rejection ratio -30 v in = v out + 1v v out = 3.0v byp = 0.01f c out = 1f 100ma 150ma 50ma 0 -10 -20 -40 -50 -60 -70 0.01 0.1 1 10 100 1000 frequency (khz) power supply rejection ratio -30 -80 v in = v out + 1v v out = 3.0v byp = 0.1f c out = 1f 100ma 150ma 50ma 10 100 1000 10000 100000 1000000 0 -10 -20 -40 -50 -60 -70 0.01 0.1 1 10 100 1000 frequency (khz) power supply rejection ratio -30 v in = v out + 1v v out = 3.0v byp = 1f c out = 1f 100ma 150ma 50ma 0.00 0.05 0.10 0.20 0.25 0.30 0 25 50 75 100 125 150 output current (ma) dropout voltage vs. output current 0.15 125c 25c -40c 0.00 0.05 0.10 0.20 0.25 0.30 -40 -15 10 35 60 85 110 temperature (c) dropout voltage vs. temperature 0.15 150ma 50ma 100ma 10ma 1ma 2.80 2.85 2.90 3.00 3.05 3.10 -40 -15 10 35 60 85 110 temperature (c) dropout voltage vs. temperature 2.95 3.15 3.20 iload = 100a v out = 3.0v v in = v out + 1 0 0.5 1 2 2.5 3 0 1 2 3 4 5 input voltage(v) output voltage vs. input voltage 1.5 100a load 150a load 72 73 74 75 76 77 78 79 80 81 82 83 0 30 60 90 120 150 output current (ma) ground pin current vs. output current v in = v out + 1v v out = 3.0v 68 70 72 76 78 -40 -10 20 50 80 110 temperature (c) ground pin current vs. temperature 74 iload = 100a 60 65 70 80 90 -40 -10 20 50 80 110 temperature (c) ground pin current vs. temperature 75 iload = 150ma 85 95 0 10 20 50 70 90 012345 input voltage (v) ground pin current vs. input voltage 30 iload = 100a v out = 3.0v v in = v out + 1 40 60 80 0 10 20 50 70 90 012345 input voltage (v) ground pin current vs. input voltage 30 iload = 150a v out = 3.0v v in = v out + 1 40 60 80
micrel, inc. mic5264 may 2006 6 m9999-052406 (408) 955-1690 typical characteristics (continued) 150 170 190 230 270 290 3 3.5 4 4.5 5 5.5 input voltage (v) short circuit current vs. input voltage 210 250 10 100 1000 10000 100000 1000000 10000000 0.001 0.01 0.1 1 10 0.01 0.1 1 10 100 1000 10000 frequency (khz) output noise spectral density v in = 4.2v v out = 2.8v c out = 1.0f byp = 0.1f i out = 150ma
micrel, inc. mic5264 may 2006 7 m9999-052406 (408) 955-1690 functional characteristics line transient response inpu t volta g e (1v/div) outpu t volta g e (20mv/div) time (400s/div) 5.0v 4.0v c out = 1f ceramic c byp = 0.01f i out = 150ma v out = 3.0v v in = v out + 1v load transient response output voltage (50mv/div) output curren t (50ma/div) time (5s/div) 150ma 100a c out = 1f ceramic c byp = 0.01f v out = 3.0v v in = v out + 1v enable pin dela y outpu t volta g e (1v/div) enable volta g e (1v/div) time (10s/div) c in = 1f ceramic c byp = 0.01f i out = 10ma v out = 3.0v v in = v out + 1v shutdown dela y output volta g e (1v/div) enable volta g e (1v/div) time (100s/div) c in = 1f ceramic c out = 1f ceramic i out = 10ma v out = 3.0v v in = v out + 1v
micrel, inc. mic5264 may 2006 8 m9999-052406 (408) 955-1690 block diagram fault reference voltage thermal sensor error amplifier current amplifier startup/ shutdown control quickstart/ noise cancellation under- voltage lockout active shutdown byp1 out1 gnd1 en1 in1 fault reference voltage thermal sensor error amplifier current amplifier startup/ shutdown control quickstart/ noise cancellation under- voltage lockout active shutdown byp2 out2 gnd2 en2 in2 mic5264 diagram
micrel, inc. mic5264 may 2006 9 m9999-052406 (408) 955-1690 application information enable/shutdown the mic5264 comes with two independent active-high enable pins that allow the regulator in each output to be disabled separately. forcing the enable pin low disables the regulator and sends it into a ?zero? off-mode current state. in this state, current consumed by the regulator goes nearly to zero. forcing the enable pin high enables the output voltage. this part is cmos and the enable pin cannot be left floating; a floating enable pin may cause an indeterminate state on the output. input capacitor the mic5264 is a high performance, high bandwidth device. therefore, it r equires well-bypassed input supplies for optimal performance. a 1uf capacitor 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. output capacitor the mic5264 requires capacitors at both outputs for stability. the design requires 1uf or greater on each output to maintain stability. the design is optimized for use with low-esr ceramic chip capacitors. high esr capacitors may cause high frequency oscillation. the maximum recommended esr is 300m ? . the output capacitor can be increased, but performance has been optimized for a 1uf 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. bypass capacitor a capacitor can be placed from the noise bypass pin to ground to reduce output voltage noise. the capacitor bypasses the internal reference. a 0.01uf capacitor is recommended for applications that require low-noise outputs. the bypass capacitor can be increased, further reducing noise and improving psrr. turn-on time increases slightly with respec t to bypass capacitance. a unique quick-start circuit a llows the mic5264 to drive a large capacitor on the bypass pin without significantly slowing turn-on time. active shutdown the mic5264 also features an active shutdown clamp, which is an n-channel mosfet that turns on when the device is disabled. this allows the output capacitor and load to discharge, de-energizing the load. no-load stability the mic5264 will remain stable and in regulation with no load unlike many other volt age regulators. this is especially important in cmos ram keep-alive applications. thermal considerations the mic5264 is designed to provide 150ma of continuous current per output in a very small package. maximum ambient operating temperature can be calculated based on the output current and the voltage drop across the part. given t hat the input voltage is 5.0v, the v out1 output voltage is 3.0v at 150ma; v out2 output voltage is 2.8v at 100ma. 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 <100ua over the load range, the power dissipation contributed by the ground current is < 1% and can be ignored for this calculation. p d = (5.0v-3.0v) x 150ma + (5.0v-2.8v) x 100ma p d = 0.52w 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 max. junction temperature of the die ja thermal resistance = 63c/w
micrel, inc. mic5264 may 2006 10 m9999-052406 (408) 955-1690 mic5264 junction-to-ambien t thermal resistance package ja recommended minimum footprint jc 2.5mm x 2.5mm mlf-10 75c/w 2c/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 63c/w. the maximum power dissipation must not be exceeded for proper operation. for example, when operating the mic5264pmyml at an input voltage of 5.0v at 150ma on v out1 and 100ma on v out2 with a minimum footprint layout, the maximum ambient operating temperature t a can be determined as follows: ? ? ? ? ? ? ? ? ? = c t c w a 63 125 52 . 0 t a = 92.24c therefore, a 3.0v applicati on at 150ma on ch1 and 2.8v at 100ma on ch2 can accept an ambient operating temperature of 92c in a 10-pin 2.5mm x 2.5mm 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. mic5264 may 2006 11 m9999-052406 (408) 955-1690 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 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 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. ? 2005 micrel, incorporated.

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