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mic5363/4 high-psrr, 300ma, cap ldo in 1.2mm 1.2mm thin mlf ? mlf and micro lead frame 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 general description the mic5363/4 is an advanced, 300ma ldo ideal for powering general purpose portable devices requiring a high power supply rejection ratio (psrr). the mic5363/4 integrates a high-performance, 300ma ldo into a tiny 1.2mm x 1.2mm thin mlf ? package. the mic5363/4 is designed to reject input noise and provide a low output noise regulator with fast transient response to respond to any load change quickly. the mic5364 also incorporates an active discharge feature that switches a 30 ? nfet from vout to gnd to discharge output capacitors when the part is disabled. the mic5363/4 is available in fixed output voltages in lead-free (rohs-compliant) 6-pin 1.2mm x 1.2mm thin mlf ? leadless package. data sheets and support documentation can be found on micrel?s web site at: www.micrel.com . features ? 2.5v to 5.5v input voltage range ? 300ma output ? high output accuracy : 2% ? low quiescent current : typically 38a ? stable with 1f ceramic capacitors ? high psrr (70db @1khz) ? low dropout voltage : 225mv at 300ma ? thermal-shutdown protection ? current-limit protection ? active output discharge circuit : mic5364 ? 6-pin 1.2mm x 1.2mm thin mlf ? package applications ? mobile phones ? gps, pmp, and dsc ? battery-powered electronics ? noise sensitive applications _________________________________________________________________________________________________________________________ typical application camera dsp power supply april 2012 m9999-040412-a
micrel, inc. mic5363/4 april 2012 2 m9999-043012-a ordering information part number marking code voltage (1) junction temperature range package (2) lead finish (3) mic5363-1.2ymt 34 1.2 ?40 c to +125 c 6-pin 1.2 mm 1.2mm thin mlf ? pb-free mic5363-2.8ymt 3g 2.8 ?40 c to +125 c 6-pin 1.2 mm 1.2mm thin mlf ? pb-free mic5363-3.3ymt 3s 3.3 ?40 c to +125 c 6-pin 1.2 mm 1.2mm thin mlf ? pb-free mic5364-1.2ymt (4) 44 1.2 ?40 c to +125 c 6-pin 1.2 mm 1.2mm thin mlf ? pb-free mic5364-2.8ymt (4) 4x 2.8 ?40 c to +125 c 6-pin 1.2 mm 1.2mm thin mlf ? pb-free mic5364-3.3ymt (4) 4s 3.3 ?40 c to +125 c 6-pin 1.2 mm 1.2mm thin mlf ? pb-free notes: 1. other voltages available. contact micrel for details. 2. ? ? = pin 1 identifier. 3. green, rohs-compliant. level finish is nipdau. mold compound is halogen free. 4. mic5364 offers auto-discharge function. pin configuration 6-pin 1.2mm 1.2mm thin mlf ? (mt) pin description pin number pin name pin function 1 n/c not internally connected. 2 n/c not internally connected. 3 gnd ground. 4 vin supply input. decouple with 1 f ceramic capacitor. 5 vout output voltage. decouple with 1 f ceramic capacitor. 6 en enable input. active high. logic high = on, logic low = off. do not leave floating. ep epad exposed heatsink pad. connect to ground for best thermal performance.
micrel, inc. mic5363/4 april 2012 3 m9999-043012-a absolute maximum ratings (1) supply voltage (v in ) ........................................ ? 0.3v to + 6v enable voltage (v en )............................... ? 0.3v to v in +0.3v power dissipation (p d ) ........................... internally limited (3) lead temperature (sol dering, 10s )............................ 260c junction temperature (t j ) ........................?40c to +125c 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 1.2mm 1.2mm thin mlf ? ( ja ).....................173c/w electrical characteristics (5) v in = v en = v out + 1v, 2.5v if v out 1.5v; i out = 100a; c out = 1f; t j = 25c, bold values indicate ?40 c to +125 c, 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 (6) v in = max(v out + 1v, 2.5v) to 5.5v, i out =100a 0.02 0.2 %/v load regulation i out =100a to 300ma 0.3 0.7 % i out =50ma; v out 2.8v 35 65 i out =300ma; v out 2.8v 225 380 i out =50ma; 2.5v v out < 2.8v 55 100 dropout voltage i out =300ma; 2.5v v out < 2.8v 300 600 mv v en = high; i out = 0ma 38 53 ground pin current v en = high; i out = 300ma 55 70 a shutdown current v en = 0v 0.1 1 a supply ripple rejection f = 1khz; c out = 1f 70 db current limit v out = 0v 325 520 680 ma output voltage noise c out = 1f; 10hz to 100khz 200 v rms auto-discharge nfet resistance mic5364 only; v en = 0v; v in = 3.6v; i out = ? 3ma 30 enable inputs (en) logic low 0.2 enable input voltage logic high 1.2 v v il 0.2v 0.01 1 enable input current v ih 1.2v 0.01 1 a turn-on time c out = 1f 60 150 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.
micrel, inc. mic5363/4 april 2012 4 m9999-043012-a typical characteristics output voltage vs. output current 2.78 2.79 2.80 2.81 2.82 0 50 100 150 200 250 300 output current (ma) output voltage (v) v in = 3.8v v out = 2.8v c in = c out = 1f ground current vs. output current 20 40 60 80 100 120 0 0 50 100 150 200 250 300 ground current (a) output current (ma) v in = 3.8v v out = 2.8v c in = c out = 1f dropout voltage vs. output current 20 40 60 80 100 120 140 160 180 200 220 240 output voltage (v) 0 0 50 100 150 200 250 300 output current (ma) v out = 2.8v c in = c out = 1f current limit vs. input voltage 400 450 500 550 600 650 700 current limit (ma) 350 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) v out = 1.2v c in = c out = 1f power supply rejection ratio 0 20 40 60 80 100 120 10 100 1k 10k 100k 1m frequency (hz) psrr (db) v in = v en = 3.8v v out = 2.8v c out = 1f 100a 200ma 100ma output voltage vs. input voltage (v out = 2.8v) 2.00 2.20 2.40 2.60 2.80 3.00 3.20 3.40 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) output voltage (v) 100a 300ma v out = 2.8v c in = c out = 1f output voltage vs. input voltage (v out =1.2v) 1.10 1.14 1.18 1.22 1.26 1.30 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) output voltage (v) 100a 300ma v out = 1.2v c in = c out = 1f ground current vs. input voltage 0 10 20 30 40 50 60 70 2.5 3 3.5 4 4.5 5 5.5 input voltage (v) ground current (a) 300ma no load v out = 2.8v c in = c out = 1f dropout voltage vs. temperature 0 50 100 150 200 250 300 -40 -20 0 20 40 60 80 100 120 temperature( c) dropout voltage (mv) 300ma 150ma 50ma v out = 2.8v c in = c out = 1f
micrel, inc. mic5363/4 april 2012 5 m9999-043012-a typical characteristics (continued) output noise spectral density 0.010 0.100 1.000 10.000 noise uv/ hz 0.001 frequency (hz) v in = 4.5v v out = 2.8v c out = 1f i out = 51ma noise (10hz - 100khz) = 192v 10 100 1k 10k 100k 1m
micrel, inc. mic5363/4 april 2012 6 m9999-043012-a functional characteristics
micrel, inc. mic5363/4 april 2012 7 m9999-043012-a functional diagram mic5363 block diagram mic5364 block diagram
micrel, inc. mic5363/4 april 2012 8 m9999-043012-a application information the mic5363/4 is a 300ma ldo, packaged in a 1.2mm x 1.2mm thin mlf ? package. the mic5364 includes an auto-discharge feature which automatically discharges the output capacitor when the output is disabled. the mic5363/4 consists of an internal reference, error amplifier, p-channel pass transistor, and internal feedback resistors. the error amplifier compares the feedback voltage with that of the reference. depending upon whether the feedback is lower or higher than the reference determines whether the gate of the pass transistor is pulled low to allow more current and increase output voltage or pulled high to reduce current. the mic5363/4 regulator is fully protected from damage due to fault conditions through linear current limiting and thermal shutdown. input capacitor the mic5363/4 is a high-performance, high-bandwidth device. an input capacitor of 1f from the input pin to ground is required to provi de stability. low-esr ceramic capacitors provide optimal performance in small board area. 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 mic5363/4 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. x7r and x5r dielectric ceramic capacitors are recommended for their temperature performance. x7r capacitors change capacitance by 15% over their operating 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 the mic5363/4 will remain stable and in regulation without the need of a minimu m load. this reduces the amount and therefore cost of external components. enable/shutdown the mic5363/4 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 an off-mode current state drawin g virtually zero current. when disabled, the mic5364 switches an internal 30 ? load on the regulator output to discharge the external capacitor. forcing the enable pin high enables the output voltage. the active-high enable pin uses cmos technology and cannot be left floating. a floating enable pin may cause an indeterminate state on the output. thermal considerations the mic5363/4 is designed to provide a 300ma continuous current output in a very-small package. maximum operating temperature can be calculated based on the output currents and the voltage drop across the part. for example, if the input voltage is 3.6v, v out = 2.8v and the output current = 300ma. 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 is a cmos device and the ground current is typically <60a over the load range, the power dissipation contributed by the ground current is < 1% which can be ignored for this calculation: p d = (3.6v ? 2.8v) 300ma p d = 0.24w 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) = 125 c ja = 173 c/w
micrel, inc. mic5363/4 april 2012 9 m9999-043012-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 junction-to- ambient thermal resistance for the standard footprint is 173c/w. the maximum power dissipation must not be exceeded for proper operation. for example, when operating a 2.8v application with an input voltage of 3.6v and 300ma output with a standard footprint layout, the maximum ambient operating temperature t a can be determined as follows: 0.24w = (125 c ? t a ) / (173 c/w) t a = 83 c therefore, a mic5363-2.8ymt application with a 300ma output current can accept an ambient operating temperature of 83c in a 1.2mm x 1.2mm 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. mic5363/4 april 2012 10 m9999-043012-a evaluation board schematic bill of materials item part number manufacturer description qty. c1, c2 grm155r61a105ke15d murata (1) 1f/6.3v ceramic capacitor, x5r, size 0402 2 r1 crcw04021003fked vishay (2 ) resistor, 100k (0403 size), 1% 1 u1 mic5363/4-xxymt micrel, inc. (3) 300ma cap ldo in 1.2mm 1.2mm thin mlf ? 1 no tes: 1. murata tel: www.murata.com . 2. vishay: www.vishay.com . 3. micrel, inc.: www.micrel.com .
micrel, inc. mic5363/4 april 2012 11 m9999-043012-a pcb layout recommendations top layer bottom layer
micrel, inc. mic5363/4 april 2012 12 m9999-043012-a package information 6-pin 1.2mm 1.2mm thin mlf ? 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 micrel makes no representations or warranties with respect to t he accuracy or completeness of the information furnished in this data sheet. this information is not intended as a warranty and micrel does not assume responsibility for its use. micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. no license, whether expre ss, implied, arising by estoppel or other wise, to any intellectual property rights is granted by this document. except as provided in micrel?s terms and conditions of sale for such products, mi crel assumes no liability whatsoever, and micrel disclaims any express or implied warranty relating to the sale and/or use of micrel products including l iability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual p roperty right. 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 si gnificant 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 a nd purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2012 micrel, incorporated.

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