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MIC5162 dualregulatorcontrollerforddr3 gddr3/4/5memoryandhighspeed bustermination micrelinc.?2180fortunedrive?sanjose,ca951 31?usa?tel+1(408)9440800?fax+1(408)47 41000?http://www.micrel.com march2010 m9999033110 generaldescription the MIC5162 is a dual regulator controller designed for high speed bus termination. it offers a simple, low cost jedeccompliantsolutionforterminatinghighspeed ,low voltagedigitalbuses(i.e.ddr,ddr2,ddr3,scsi, gtl, sstl,hstl,lvttl,rambus,lvpecl,lvecl,etc). theMIC5162controlstwoexternalnchannelmosfets to form two separate regulators. it operates by swi tching between either the highside mosfet or the lowside mosfet depending upon whether the current is being sourcedtotheloadorsunkbytheregulator. designed to provide a universal solution for bus termination regardless of input voltage, output vol tage, or load current. the desired MIC5162 output voltage ca n be programmedbyforcingthereferencevoltageexterna llyto desiredvoltage. theMIC5162operatesfromaninputof1.35vto6v, with a second bias supply input required for operation. it is available in a tiny msop10 package with operating junctiontemperaturerangeof40 cto+125 c. data sheets and support documentation can be found on micrelswebsiteat:www.micrel.com. features ? inputvoltagerange:1.35vto6v ? upto7av tt current ? trackingprogrammableoutput ? widebandwidth ? logiccontrolledenableinput ? requiresminimalexternalcomponents ? ddr,ddr2,ddr3,memorytermination ? 40c micrel,inc. MIC5162 march2010 2 m9999033110 orderinginformation partnumber temperaturerange package leadfinish MIC5162ymm C40to+125c 10pinmsop pbfree note :msopisagreenrohscompliantpackage.leadfin ishisnipdau.moldcompoundishalogenfree. pinconfiguration 10pinmsop(mm) pindescription pinnumber pinname pinfunction 1 vcc biassupplyinput.apply3v6vtothisinputfori nternalbiastothecontroller. 2 en enable(input):cmoscompatibleinput.logic high=enable,logiclow=shutdown. theenablepincanbetieddirectlytov ddq orv cc forfunctionality.donotfloatthe enablepin.floatingthispincausestheenableto beinanundeterminedstate. 3 vddq inputsupplyvoltage. 4 vref referencevoltageequaltohalfofvddq. forinternaluseonly. 5 gnd ground. 6 fb feedbackinputtotheinternalerroramplifier . 7 comp compensation (output): connect a capacitor and resistor from comp pin to feedbackpinforcompensationoftheinternalcontr olloop. 8 ld lowsidedrive:connectstothegateofthee xternallowsidemosfet. 9 hd highsidedrive:connectstothegateofthe externalhighsidemosfet. 10 nc notinternallyconnected.
micrel,inc. MIC5162 march2010 3 m9999033110 absolutemaximumratings (1) supplyvoltage(v cc ) ....................................... ? 0.3vto+7v supplyvoltage(v ddq ) ..................................... ? 0.3vto+7v enableinputvoltage(v en ).................... ? 0.3vto(v in +0.3v) junctiontemperaturerange(t j )...... ? 40c1.2v(controllerenable) 5.5 a driver highsidemosfetfullyon 4.8 4.97 v highsidegatedrivevoltage highsidemosfetfullyoff 0.03 0.2 v lowsidemosfetfullyon 4.8 4.97 v lowsidegatedrivevoltage lowsidemosfetfullyoff 0.03 0.2 v notes: 1.exceedingtheabsolutemaximumratingmaydamag ethedevice. 2.thedeviceisnotguaranteedtofunctionoutsid eitsoperatingrating. 3.devicesareesdsensitive.handlingprecaution srecommended.humanbodymodel1.5kinserieswi th100pf. 4.specificationforpackagedproductonly. 5.thev tt voltageaccuracyismeasuredasadeltavoltagefr omthereferenceoutput(v tt v ref ). 6.shutdowncurrentismeasuredonlyonthev cc pin.thev ddq pinwillalwaysdrawaminimumamountofcurrentw henvoltageisapplied. 7.startuptimeisdefinedastheamountoftime fromen=v cc tohsd=90%ofv cc .
micrel,inc. MIC5162 march2010 4 m9999033110 testcircuit
micrel,inc. MIC5162 march2010 5 m9999033110 typicalcharacteristics 5 4 3 2 1 0 1 2 3 4 5 3 2 1 0 1 2 3 [v tt v ref ](mv) outputcurrent(a) [v tt v ref ] vs.outputcurrent 10 8 6 4 2 0 2 4 6 8 10 40 20 0 20 40 60 80 100 120 [v tt v ref ](mv) temperature(oc) [v tt v ref ] vs.temperature sink3a 10 8 6 4 2 0 2 4 6 8 10 40 20 0 20 40 60 80 100 120 [v tt v ref ](mv) temperature(oc) [v tt v ref ] vs.temperaute source3a 1.2375 1.2400 1.2425 1.2450 1.2475 1.2500 1.2525 1.2550 1.2575 1.2600 1.2625 40 20 0 20 40 60 80 100 120 v ref (v) temperature(oc) v ref vs.temperature v ddq =2.5v 0 2 4 6 8 10 12 14 16 18 0 1 2 3 4 5 6 sourcecurrent(ma) inputvoltage(v) i cc current vs.v cc 0 2 4 6 8 10 12 14 16 18 20 40 20 0 20 40 60 80 100 120 sourcecurrent(ma) temperature(oc) i cc current vs.temperature v cc =5v
micrel,inc. MIC5162 march2010 6 m9999033110 functionaldiagram
micrel,inc. MIC5162 march2010 7 m9999033110 applicationinformation high performance memory requires high speed signaling. this means special attention must be pai d to maintain signal integrity. bus termination provides a means to increase signaling speed while maintaining good signal integrity. an example of bus terminatio n is the series stub termination logic or sstl. figure 1 is an example of an sstl 2 single ended series paralle l terminated output. sstl 2 is a jedec signaling standard operating off a 2.5v supply. it consists o f a series resistor (r s ) and a terminating resistor (r t ). valuesofr s rangebetween10to30withatypicalof 22, while r t ranges from 22 to 28 with a typical value of 25. v ref must maintain 1/2 vdd with a 1% tolerance, while v tt will dynamically sink and source currenttomaintainaterminationvoltageof40mv from the v ref line under all conditions. this method of bus termination reduces common mode noise, settling tim e, voltageswings,emi/rfiandimprovesslewrates. the MIC5162 is a high performance linear controller , utilizing scalable nchannel mosfets to provide jedeccompliant bus termination. termination is achieved by dividing down the v ddq voltage by half, providing the reference (v ref ) voltage. an internal error amplifier compares the termination voltage (v tt ) and v ref ,controlling2externalnchannelmosfetstosink and source current to maintain a termination voltag e (v tt ) equal to v ref . the nchannels receive their enhancement voltage from a separate v cc pin on the device. although this document focuses mostly on sstl, the MIC5162 is also capable of providing bus terminatio ns for scsi, gtl, hstl, lvttl, rambus, lvpecl, ddr, ddr2, ddr3 memory termination and other systems. figure1.sstl2termination v ddq the v ddq pin on the MIC5162 provides the source current through the highside nchannel and the reference voltage to the device. the MIC5162 can operate at v ddq voltages as low as 1.35v. due to the possibilityoflargetransientcurrentsbeingsourc edfrom this line, significant bypass capacitance will aid in performance by improving the source impedance at higherfrequencies.sincethereferenceissimplyv ddq /2, perturbations on the v ddq will also appear at half the amplitude on the reference. for this reason, low es r capacitors such as ceramics or oscon are recommendedonv ddq . v tt v tt is the actual termination point. v tt is regulated to v ref .duetohighspeedsignaling,theloadcurrentsee n by v tt is constantly changing. to maintain adequate large signal transient response, large oscon and ceramics are recommended on v tt . the proper combinationandplacementoftheosconandceramic capacitors is important to reduce both esr and esl suchthathighcurrentandhighspeedtransientsdo not exceed the dynamic voltage tolerance requirement of v tt .thelargerosconcapacitorsprovidebulkcharge storage while the smaller ceramic capacitors provid e currentduringthefastedgesofthebustransition .using several smaller ceramic capacitors distributed near the termination resistors is typically important to red uce the effectsofpcbtraceinductance. v ref two resistors dividing down the v ddq voltage provide v ref (figure 3). the resistors are valued at around 17k.aminimumcapacitorvalueof120pffromv ref to ground is required to remove high frequency signals reflected from the source. large capacitance values (>1500pf) should be avoided. values greater than 1500pf slow down v ref and detract from the reference voltages ability to track v ddq during high speed load transients. figure2.MIC5162asaddrmemorytermination for3.5aapplication
micrel,inc. MIC5162 march2010 8 m9999033110 figure3.vreffollowsvddq v ref can also be manipulated for different applications . aseparatevoltagesourcecanbeusedtoexternally set thereferencepoint,bypassingthedividernetwork. also, external resistors can be added from v ref tov ddq or v ref togroundtoshiftthereferencepointupordown. v cc v cc supplies the internal circuitry of the MIC5162 and provides the drive voltage to enhance the external n channel mosfets. a 1f ceramic capacitor is recommended for bypassing the v cc pin. the minimum v cc voltage should be a gatesource voltage above v tt or greater than 3v without exceeding 6v. for exampl e, onansstlcompliantterminator,v ddq equals2.5vand v tt equals 1.25v. if the nchannel mosfet selected requiresagatesourcevoltageof2.5v,v cc shouldbea minimumof3.75v. feedbackandcompensation thefeedbackprovidesthepathfortheerroramplif ierto regulate v tt . an external resistor must be placed between the feedback and v tt . this allows the error amplifiertobecorrectlyexternallycompensated. the comp pin on the MIC5162 is the output of the internal error amplifier. by placing a capacitor be tween the comp pin and the feedback pin, this coupled wit h the feedback resistor places an external pole on th e erroramplifier.witha1kor510feedbackresist or,a minimum 220pf capacitor is recommended for a 3.5a peak termination circuit. increases in load, multip le n channel mosfets and/or increase in output capacitancemayrequirefeedbackand/orcompensatio n capacitor values to be increased to maintain stabil ity. feedback resistor values should not exceed 10k and compensationcapacitorsshouldnotbelessthan40p f. enable theMIC5162featuresanactivehighenable(en)inp ut. in the offmode state, leakage currents are reduced to microamperes. en has thresholds compatible with ttl/cmos for simple logic interfacing. en can be ti ed directly to v ddq or v cc for functionality. do not float the enpin.floatingthispincausestheenablecircuit rytobe inanundeterminedstate. inputcapacitance although the MIC5162 does not require an input capacitorforstability,usingonegreatlyimproves device performance. due to the highspeed nature of the MIC5162, low esr capacitors such as oscon and ceramicsarerecommendedforbypassingtheinput.t he recommended value of capacitance will depend greatl y uponproximitytothebulkcapacitance.althougha 10f ceramiccapacitorwillsufficeformostapplication s,input capacitance may need to be increased in cases where the termination circuit is greater than 1 inch away from thebulkcapacitance. outputcapacitance large, low esr capacitors are recommended for the output (vtt) of the MIC5162. although low esr capacitors are not required for stability, they are recommended to reduce the effects of highspeed currenttransientsonvtt.thechangeinvoltagedu ring the transient condition will be the effect of the p eak currentmultipliedbytheoutputcapacitorsesr.f orthat reason, oscon type capacitors are excellent for th is application. they have extremely low esr and large capacitancetosize ratio. ceramic capacitors are a lso well suited to termination due to their low esr. th ese capacitorsshouldhaveadielectricratingofx5ro rx7r. y5v and z5u type capacitors are not recommended, due to their poor performance at high frequencies a nd over temperature. the minimum recommended capacitance for a 3 amp peak circuit is 100f. outp ut capacitance can be increased to achieve greater transientperformance. mosfetselection the MIC5162 utilizes external nchannel mosfets to sinkandsourcecurrent.mosfetselectionwillsett leto twomaincategories:sizeandgatethreshold(v gs ). mosfetpowerrequirements one of the most important factors is to determine t he amount of power the mosfet required to dissipate. powerdissipation inansstlcircuitwillbeidenti calfor both the highside and lowside mosfets. since the supply voltage is divided by half to supply v tt , both mosfetshavethesamevoltagedroppedacrossthem. theyarealsorequiredtobeabletosinkandsourc ethe sameamountofcurrent(foreitherall0sorall1s ).this equates to each side being able to dissipate the sa me amount of power. power dissipation calculation for the highsidedriverisasfollows: p d =(v ddq ?v tt )i_source wherei_sourceistheaveragesourcecurrent.power dissipationforthelowsidemosfetisasfollows: p d =v tt i_sink
micrel,inc. MIC5162 march2010 9 m9999033110 wherei_sinkistheaveragesinkcurrent. in a typical 3a peak sstl_2 circuit, power considerations for mosfet selection would occur as follows. p d =(v ddq ?v tt )i_source p d =(2.5v?1.25v)1.6a p d =2w thistypicalsstl_2applicationwouldrequireboth high side and lowside nchannel mosfets to be able to handle 2 watts each. in applications where there is excessive power dissipation, multiple nchannel mosfets may be placed in parallel. these mosfets will share current, distributing power dissipation across eachdevice. themaximummosfetdie(junction)temperaturelimit s maximumpowerdissipation.theabilityofthedevic eto dissipateheatawayfromthejunctionisspecified bythe junctiontoambient ( ja ) thermal resistance. this is the sum of junctiontocase ( jc ) thermal resistance, case tosink ( cs ) thermal resistance and sinktoambient ( sa )thermalresistance; ja = jc + cs + sa intheexampleofa3apeaksstl_2terminationcirc uit, a dpack nchannel mosfet that has a maximum junction temperature of 125c has been selected. th e device has a junctiontocase thermal resistance of 1.5c/watt. the application has a maximum ambient temperature of 60c. the required junctiontoambie nt thermalresistancecanbecalculatedasfollows: d a j ja p t t ? = wheret j isthemaximumjunctiontemperature,t a isthe maximum ambient temperature and p d is the power dissipation. inthisexample: d a j ja p t t ? = w 2 c 60 c 125 ja = - w / c 5. 32 ja = this shows that our total thermal resistance must b e betterthan32.5c/w.sincethetotalthermalresis tance isacombinationofalltheindividualthermalresi stances, the amount of heat sink required can be calculated as follows: sa = ja ?( jc + cs ) inthisexample: ( ) c 5.0 w / c 5.1 w / c 5. 32 sa + = - w / c 5. 30 sa = in most cases, casetosink thermal resistance can be assumedtobeabout0.5c/w. thesstlterminationcircuitforthisexample,usin g2d pack nchannel mosfets (one high side and one on the low side) will require at least a 30.5c/w heat sink per mosfet. this may be accomplished with an external heat sink or even just the copper area tha t the mosfetissolderedto.insomecases,airflowmaya lso berequiredtoreducethermalresistance. mosfetgatethreshold nchannel mosfets require an enhancement voltage greater than its source voltage. typical nchannel mosfets have a gatesource threshold (v gs ) of 1.8v andhigher.sincethesourceofthehighsidencha nnel is connected to v tt , the MIC5162 v cc pin requires a voltage greater than the v gs voltage. for example, the sstl_2 termination circuit has a v tt voltage of 1.25v. forannchannelthathasav gs ratingof2.5v,thev cc voltagecanbeaslowas3.75v,butnotlessthan3 .0v. with an nchannel that has a 4.5v v gs , the minimum v cc required is 5.75v. although these nchannels are driven below their full enhancement threshold, it i s recommended that the v cc voltage has enough margin tobeabletofullyenhancethemosfetsforlarges ignal transient response. in addition, low gate threshold s mosfets are recommended to reduce the v cc requirements.
micrel,inc. MIC5162 march2010 10 m9999033110 vddq vcc en gnd vref comp hd ld fb + 1k 220pf 1k 1k vddq=1.35vto6.0v vcc=5.0v en 120pf + 100f vtt=?vddq vinorvddq MIC5162ymm 100f 1f 100f sud50n0206p sud50n0206p 100f figure4.ddr2termination(fourmosfetssupportup to7a) sstl2application (twomosfetssupportupto3.5a)
micrel,inc. MIC5162 march2010 11 m9999033110 ripplemeasurements toproperlymeasurerippleoneitherinputoroutpu tofa switching regulator, a proper ring in tip measureme nt is required. standard oscilloscope probes come with a grounding clip, or a long wire with an alligator cl ip. unfortunately, for high frequency measurements, thi s ground clip can pick up high frequency noise and erroneouslyinjectitintothemeasuredoutputripp le. the standard evaluation board accommodates a home made version by providing probe points for both the input and output supplies and their respective grou nds. this requires the removing of the oscilloscope prob e sheath and ground clip from a standard oscilloscope probeandwrappinganonshieldedbuswirearoundt he oscilloscope probe. if there does not happen to be any nonshielded bus wire immediately available, the le ads from axial resistors will work. by maintaining the shortest possible ground lengths on the oscilloscop e probe,trueripplemeasurementscanbeobtained. figure5.lownoisemeasurement
micrel,inc. MIC5162 march2010 12 m9999033110 pcblayoutguideline warning!!!tominimizeemiandoutputnoise,follow theselayoutrecommendations. pcb layout is critical to achieve reliable, stable and efficient performance. a ground plane is required t o control emi and minimize the inductance in power, signalandreturnpaths. the following guidelines should be followed to insu re properoperationoftheMIC5162controllerapplicat ion. icandmosfet ? placetheicclosetothepointofload(pol). ? the trace connecting controller drive pins to mosfets gates should be short and wide to avoid oscillations.theseoscillationsaretheresultof tank circuit formed by trace inductance and gate capacitance. ? use fat traces to route the input and output power lines. ? signal and power grounds should be kept separate andconnectedatonlyonelocation. inputcapacitor ? placetheinputcapacitornext. ? place the input capacitors on the same side of the board and as close to the mosfet and ic as possible. ? placeaceramicbypasscapacitornexttomosfet. ? keepboththevddqandgndconnectionsshort. ? place several vias to the ground plane close to th e inputcapacitorgroundterminal,butnotbetweenth e inputcapacitorsandmosfet. ? use either x7r or x5r dielectric input capacitors. donotusey5vorz5utypecapacitors. ? donotreplacetheceramicinputcapacitor withan y othertypeofcapacitor.anytypeofcapacitorcan be placedinparallelwiththeinputcapacitor. ? if a tantalum input capacitor is placed in paralle l withtheinputcapacitor,itmustberecommendedfo r switching regulator applications and the operating voltagemustbederatedby50%. ? inhotplugapplications,atantalumorelectrol ytic bypass capacitor must be used to limit the over voltagespikeseenontheinputsupplywithpoweri s suddenlyapplied. outputcapacitor ? use a wide trace to connect the output capacitor ground terminal to the input capacitor ground terminal. ? phase margin will change as the output capacitor value and esr changes. contact the factory if the output capacitor is different from what is shown in thebom. ? the feedback trace should be separate from the power trace and connected as close as possible to the output capacitor. sensing a long high current loadtracecandegradethedcloadregulation.
micrel,inc. MIC5162 march2010 13 m9999033110 designexample micrelsMIC5162asaddr3memoryterminationdevic efor3.5aapplication(vddqandmosfetinputtied together) billofmaterials item partnumber manufacturer description qty. grm21br60j226me39l murata (1) c2012x5r0j226m tdk (2) c1,c2, c3,c4 08056d226mat2a avx (3) 22f,6.3v,ceramiccapacitor,x5r,0805 4 grm188r60j106me47d murata (1) c1608x5r0j106m tdk (2) c5 06036d106mat2a avx (3) 10f,6.3v,ceramiccapacitor,x5r,0603 1 grm1885c1h390ja01d murata (1) 39pf,50v,ceramiccapacitor,npo,0603 c6 c1608c0g1h390j tdk (2) 39pf,25v,ceramiccapacitor,npo,0603 1 c7 06035c101mat2a avx (3) 100pf,50v,ceramiccapacitor,x7r,0603 1 c8 grm188r71h391ka01d murata (1) 390pf,50v,ceramiccapacitor,x7r,0603 1 grm31cr60j476me19l murata (1) c3216x5r0j476m tdk (2) c9,c10 12066d476mat2a avx (3) 47f,6.3v,ceramiccapacitor,x5r,1206 2 c13 grm188r71h102ka01d murata (1) 1nf,50v,ceramiccapacitor,x7r,0603 1 c14 grm188r71h103ka01d murata (1) 10nf,50v,ceramiccapacitor,x7r,0603 1 0603zd105kat2a avx (3) c22 grm188r61a105k murata (1) 1f,10v,ceramiccapacitor,x5r,0603 1 vj0603a121jxacw1bc vishay (4) c23,c12 06033a121jat2a avx (3) 120pf,25v,ceramiccapacitor,npo,0603 2 vj0603y221kxacw1bc vishay (4) 220pf,50v,ceramiccapacitor,x7r,0603 c27 06033c221jat2a avx (3) 220pf,25v,ceramiccapacitor,x7r,0603 1 c26 tcjb107m006r0070 avx (3) 100f,6.3v,tantalumcapacitor,1210 1 c24,c11 n.u.0603ceramiccap
micrel,inc. MIC5162 march2010 14 m9999033110 item partnumber manufacturer description qty. c30,c32, c21 c4532x5r0j107m tdk (2) 100f,6.3v,ceramiccapacitor,x5r,1812 3 c31 open(2sepc2700m) sanyo (5) 2700f,2.5vosconcap 1 cin eeefpa122uap panasonic (8) 1200f,10v,electrolyticcapacitor,smd,10x10.2 case 1 l1 cdep105me1r2mc sumida (6) 1.2h,21a,inductor,10.4mmx10.4mm 1 q1 2n7002e(sot23) vishay (4) signalmosfet,sot236 1 q21,q22 sud50n0206p vishay (4) lowvgs(th)nchannel20v(ds) 2 r1 crcw0603820rfrt1 vishaydale (4) 820 ,resistor,1%,0603 1 r2 crcw0603698rfrt1 vishaydale (4) 698,resistor,1%,0603 1 r3 crcw06032002frt1 vishaydale (4) 20k,resistor,1%,0603 1 r4 crcw06034752frt1 vishaydale (4) 47.5k,resistor,1%,0603 1 r5 crcw06031003frt1 vishaydale (4) 100k,resistor,1%,0603 1 r21 crcw0805510rfkta vishaydale (4) 510,resistor,1%,0805 1 r23,r24 crcw06031k00fkta vishaydale (4) 1k,resistor,1%,0603 2 r22 crcw06030000fkta vishaydale (4) 0,resistor,1%,0603 1 u1 mic22950yml micrel (7) buckregulator10a,0.4mhz2mhzsynchronous buckregulator 1 u21 MIC5162ymm micrel (7) dualregulatorcontrollerforddr3 1 notes: 1.murata:www.murata.com. 2.tdk:www.tdk.com. 3.avx:www.avx.com. 4.vishay:www.vishay.com. 5.sanyo:www.sanyo.com 6.sumida:www.sumida.com 7. micrel,inc.:www.micrel.com. 8.panasonic.:www.panasonic.com
micrel,inc. MIC5162 march2010 15 m9999033110 pcblayoutrecommendations(vddqandmosfetinputt iedtogether) toplayer topcomponentlayer
micrel,inc. MIC5162 march2010 16 m9999033110 middlelayer1 middlelayer2
micrel,inc. MIC5162 march2010 17 m9999033110 bottomlayer
micrel,inc. MIC5162 march2010 18 m9999033110 designexample micrelsMIC5162asaddr3memoryterminationdevic efor3.5aapplication(vddqandmosfetinputsepar ated) billofmaterials item partnumber manufacturer description qty. grm21br60j226me39l murata (1) c2012x5r0j226m tdk (2) c1,c2, c3,c4 08056d226mat2a avx (3) 22f,6.3v,ceramiccapacitor,x5r,0805 4 grm188r60j106me47d murata (1) c1608x5r0j106m tdk (2) c5 06036d106mat2a avx (3) 10f,6.3v,ceramiccapacitor,x5r,0603 1 grm1885c1h390ja01d murata (1) 39pf,50v,ceramiccapacitor,npo,0603 c6 c1608c0g1h390j tdk (2) 39pf,25v,ceramiccapacitor,npo,0603 1 c7 06035c101mat2a avx (3) 100pf,50v,ceramiccapacitor,x7r,0603 1 c8 grm188r71h391ka01d murata (1) 390pf,50v,ceramiccapacitor,x7r,0603 1 grm31cr60j476me19l murata (1) c3216x5r0j476m tdk (2) c9,c10 12066d476mat2a avx (3) 47f,6.3v,ceramiccapacitor,x5r,1206 2 c13 grm188r71h102ka01d murata (1) 1nf,50v,ceramiccapacitor,x7r,0603 1 c14 grm188r71h103ka01d murata (1) 10nf,50v,ceramiccapacitor,x7r,0603 1 0603zd105kat2a avx (3) c22,c28 grm188r61a105k murata (1) 1f,10v,ceramiccapacitor,x5r,0603 2 vj0603a121jxacw1bc vishay (4) c23,c12 06033a121jat2a avx (3) 120pf,25v,ceramiccapacitor,npo,0603 2 vj0603y221kxacw1bc vishay (4) 220pf,50v,ceramiccapacitor,x7r,0603 c27 06033c221jat2a avx (3) 220pf,25v,ceramiccapacitor,x7r,0603 1 c26 tcjb107m006r0070 avx (3) 100f,6.3v,tantalumcapacitor,1210 1 c24,c11 n.u.0603ceramiccap
micrel,inc. MIC5162 march2010 19 m9999033110 item partnumber manufacturer description qty. c30,c32, c21 c4532x5r0j107m tdk (2) 100f,6.3v,ceramiccapacitor,x5r,1812 3 c31 open(2sepc2700m) sanyo (5) 2700f,2.5vosconcap 1 cin eeefpa122uap panasonic (8) 1200f,10v,electrolyticcapacitor,smd,10x10.2 case 1 l1 cdep105me1r2mc sumida (6) 1.2h,21a,inductor,10.4mmx10.4mm 1 q1 2n7002e(sot23) vishay (4) signalmosfet,sot236 1 q21,q22 sud50n0206p vishay (4) lowvgs(th)nchannel20v(ds) 2 r1 crcw0603820rfrt1 vishaydale (4) 820,resistor,1%,0603 1 r2 crcw0603698rfrt1 vishaydale (4) 698,resistor,1%,0603 1 r3 crcw06032002frt1 vishaydale (4) 20k,resistor,1%,0603 1 r4 crcw06034752frt1 vishaydale (4) 47.5k,resistor,1%,0603 1 r5 crcw06031003frt1 vishaydale (4) 100k,resistor,1%,0603 1 r21 crcw0805510rfkta vishaydale (4) 510,resistor,1%,0805 1 r23,r24 crcw06031k00fkta vishaydale (4) 1k,resistor,1%,0603 2 r22 crcw06030000fkta vishaydale (4) 0,resistor,1%,0603 1 u1 mic22950yml micrel (7) buckregulator10a,0.4mhz2mhzsynchronous buckregulator 1 u21 MIC5162ymm micrel (7) dualregulatorcontrollerforddr3 1 notes: 1.murata:www.murata.com. 2.tdk:www.tdk.com. 3.avx:www.avx.com. 4.vishay:www.vishay.com. 5.sanyo:www.sanyo.com 6.sumida:www.sumida.com 7. micrel,inc.:www.micrel.com. 8.panasonic.:www.panasonic.com
micrel,inc. MIC5162 march2010 20 m9999033110 pcblayoutrecommendations(vddqandmosfetinputs eparated) toplayer topcomponentlayer
micrel,inc. MIC5162 march2010 21 m9999033110 middlelayer1 middlelayer2
micrel,inc. MIC5162 march2010 22 m9999033110 bottomlayer
micrel,inc. MIC5162 march2010 23 m9999033110 packageinformation 10pinmsop(mm)
micrel,inc. MIC5162 march2010 24 m9999033110 recommendedlandingpattern 10pinmsop(mm) micrel,inc.2180fortunedrivesa njose,ca95131usa tel+1(408)9440800fax+1(408)4741000webh ttp://www.micrel.com theinformationfurnishedbymicrelinthisdatash eetisbelievedtobeaccurateandreliable.howeve r,noresponsibilityisassumedbymicrelforits use.micrelreservestherighttochangecircuitry andspecificationsatanytimewithoutnotification tothecustomer. micrelproductsarenotdesignedorauthorizedfor useascomponentsinlifesupportappliances,devic esorsystemswheremalfunctionofaproduct canreasonablybeexpectedtoresultinpersonalin jury.lifesupportdevicesorsystemsaredeviceso rsystemsthat(a)areintendedforsurgicalimplan t intothebodyor(b)supportorsustainlife,andw hosefailuretoperformcanbereasonablyexpected toresultinasignificantinjurytotheuser.a purchasersuseorsaleofmicrelproductsforuse inlifesupportappliances,devicesorsystemsisa purchasersownriskandpurchaseragreestofully indemnifymicrelforanydamagesresultingfromsuc huseorsale. ?2003micrel,incorporated.

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