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Technical Reference Note
Embedded Power for Business-Critical Continuity
SXX06E
Rev. 08.010.6
Page 1 of 2
LGA C Series
3/6/10/20 A
Total Power: 15-100 Watts No. of Outputs: Single
Rev. 12.07.09 LGA C Series 1 of 28
Special Features
*3,6,10and20Aoutput current rating *Wideinputvoltage range: up to 14 Vdc *Adjustableoutput voltage: 0.59-5.1 V *Excellenttransient response *Highefficiency *Outputmargining *Powerenable *Minimalairflow requirement *Terminationvoltage capability *Ultracompactprofile and footprint *RoHScompliant *Remotesense
Product Family: Function: Usage:
LGA C Series Embedded Power Device ASIC, Memory, FPGAs, Telecom and Networking Equipment, Servers, Industrial Equipment, POL Regulation
Definition: The LGA C Series is a new high density, non-isolated converter for space sensitive applications. This Embedded Power Device (EPD) has a wide input range up to14.0 V and offers a 0.59-5.1 V adjustable output with 3, 6, 10 and 20 A capability without derating. This EPD offers a complete feature set of of enable, remote sense, and power good inclusive of a wide adjustable output range.
Standards
Designed to meet EN60950 whenutilizedinenduse equipment. International Standards for Solderability: J-STD-002B IEC-60068-2-58
Technical Reference Note
Embedded Power for Business-Critical Continuity
Electrical Description
Electrical Description TheLGACSeriesisimplementedusingavoltagemode single-phasesynchronousbucktopology.Ablock diagramoftheconverterisshowninFigure1. Theoutputvoltageisadjustableoverarangeof 0.59 - 5.1 V by using a resistor or voltage as described on Page 5. (Factory preset is 0.591Vout.) TheconvertercanbeshutdownviatheremoteON/ OFF.TheremoteON/OFFoperateswithpositivelogic thatiscompatiblewithpopularlogicdevices.Positive logicimpliesthattheconverterisenablediftheremoteON/OFFinputishigh(orfloating),anddisabledif it is low.
Vin Trim Vout +Sense -Sense
+ -
Rev. 12.07.09 LGA C Series 2 of 28
Fixed Frequency Voltage Mode Controlled PWM Remote ON/OFF PGood
Vout GND
Figure1-ElectricalBlockDiagram
ThepowergoodsignalisanopencollectoroutputthatispulledlowbythePWMcontrollerwhenit detectstheoutputisnotwithin10% of its set value. Theoutputismonitoredforovercurrentandshort-circuitconditions.WhenthePWMcontrollerdetects anovercurrentcondition,itforcesthemoduleintohiccupmode. AtypicalapplicationisshowninFigure2.
RofsRofs+
Wide Operating Temperature Range TheLGACSeries'sabilitytoaccommodateawide rangeofambienttemperaturesistheresultofits extremelyhighpowerconversionefficiencyand resultantlowpowerdissipation,combinedwith theexcellentthermalperformanceofthe thermallyenhancedcover.Themaximumoutput powerthatthemoduledeliverswilldependona numberofparameters,primarily: * * * * Input voltage range Output load current Air velocity (forced or natural convection) Additionofheatisnk
Rmargin
Margin Control Enable On/Off
23 21
12
13
22 1-4
Power Good
Vout
Ruvlo Vin
LGA C Series 9-10 5-8 24
Rtrim
15
+Sense
Cout
14
R L O A D
Cin
GND
-Sense GND
Figure 2 - Standard Application Drawing
TheLGACSeriesmodulehasanoperatingtemperaturerangeof-40Cto85Cwithsuitablederating.
Technical Reference Note
Embedded Power for Business-Critical Continuity
Features and Functions
Output Voltage Adjustment Theoutputvoltageonallmodelsisadjustablefrom0.59-5.1V. Undervoltage Lockout Thedefaultundervoltagelockoutissetasfollows: LGA 03/06/10C: 2.9 V LGA20C: 4.3 V
Rev. 12.07.09 LGA C Series 3 of 28
Current Limit and Short-Circuit Protection TheLGACmodelshaveabuilt-innon-latchingcurrentlimitfunctionandfullcontinuousshort-circuit protection.ThemodulemonitorscurrentthroughthetopandbottomFET.Whenanovercurrent conditionoccurs,themodulegoesintohiccupmode,whereitattemptstopowerupperiodicallyto determineiftheproblempersists. TheoutputcurrentlevelissensedthroughthevoltagedropacrossthetopandbottomFETsduring theirontime.ThistypeofsensingisaffectedbytemperatureduetothechangeinRdson.Athigher temperatures,theRdsonincreases,whichlowerstheovercurrentpoint. Notethatthemodulespecificationsarenotguaranteedwhentheunitisoperatedinanovercurrent condition. Remote ON/OFF TheremoteON/OFFinputallowsexternalcircuitrytoputtheLGACSeriesconverterintoalowdissipation sleep mode. Positive logic remote ON/OFF is available as standard. TheEPDisturnedoniftheremoteON/OFFpinishighorfloating.PullingthepinlowwillturnofftheEPD. Toguaranteeturn-on,theenablevoltagemustbeabove0.50V.Toturnofftheenablevoltage,itmustbe pulled below 0.2 V. FiguresillustratingtheresponseoftheunittoswitchingonandoffusingtheremoteON/OFFfeatureare includedonpages13,16,20and25.Figures3and4showvariouscircuitsfordrivingtheremoteON/OFF feature.TheremoteON/OFFinputcanbedriventhroughadiscretedevice(e.g.abipolarsignaltransistor) ordirectlyfromalogicgateoutput.Theoutputofthelogicgatemaybeanopen-collector(oropendrain)device.PleasenotetheremoteON/OFFpinshouldonlybedriveninthefollowingrange: If, If, Vin5V,Von/off(max)=Vin Vin>5V,Von/off(max)=5V
Technical Reference Note
Embedded Power for Business-Critical Continuity
FeaturesandFunctions(cont'd)
Remote ON/OFF (cont'd)
LGA C Series
Vin Remote ON/OFF Ground Vout PGood
Rev. 12.07.09 LGA C Series 4 of 28
5V Vin
LGA C Series
Vout PGood
Remote ON/OFF Ground
Figure 3 - Remote ON/OFF Input Drive Circuit for Non-Isolated Biopolar
Figure 4 - Remote ON/OFF Input Drive Circuit for Logic Driver
Power Good TheLGACmoduleshaveapowergoodindicatoroutput.Thisoutputpinusespositivelogicandisopencollector.Also,thepowergoodoutputisabletosink10mA. Whentheoutputofthemoduleiswithin10%ofthenominalsetpoint,thePowerGoodpincanbepulled high.NotethatPowerGoodshouldnotbepulledhigherthanthefollowingconditions: If, Vin5V,Vpgood(max)=Vin
If, Vin>5V,Vpgood(max)=5V Current Sink Capabilities TheLGACseriesofdc-dcconvertersisabletocurrentsinkaswellascurrentsource.TheEPDoperates overthefulloutputcurrentrangeatanyspecifiedoutputvoltage.ThisfeatureallowstheLGACtofitinto any voltage termination application. Setting Output Voltage Theoutputofthemodulecanbeadjustedfrom0.59Vto5.1V.Thisisaccomplishedbyconnectingan externalresistorbetweenTrimand-SenseasshowninFigure5andgraphedinFigure8orbydrivingthe TrimpinwithanexternalvoltageasshowninFigure6.Highaccuracysetpointscanbeachievedwiththe useofapotentiometerasshowninFigure7.
Technical Reference Note
Embedded Power for Business-Critical Continuity
Applications
Setting Output Voltage (cont'd) Setting Output Voltage (cont'd)
LGA C Series Vout Vin Trim Remote ON/OFF -Sense Rtrim Remote ON/OFF -Sense Vin Trim Rtrim 2 Rtrim 1 LGA C Series Vout
Rev. 12.07.09 LGA C Series 5 of 28
Vt
Figure 5 - Output Voltage Trim
Figure 6 - Output Voltage Trim withVoltageSource
ThetrimequationforthebasicconfigurationshowninFigure5is: Rtrim(k)=1.182 (Vout - 0.591) WhereVoutisthedesiredoutputvoltageandRtrimistheresistancerequiredbetweentheTrimpinand -Sense.
ThetrimequationfortheexternalvoltageconfigurationshowninFigure6is: Rtrim2(k)=Rtrim1 (1.182 - 2Vt) Rtrim1 (Vout - 0.591) - 1.182 WhereVoutisthedesiredoutputvoltage,Rtrim1(k)andRtrim2(k)aretheresistorsinFigure6and Vtistheappliedexternaloutputvoltage. Note: If, If, Vin5V,Vpin24(max)=Vin Vin>5V,Vpin24(max)=5V
Technical Reference Note
Embedded Power for Business-Critical Continuity
Applications(cont'd)
Setting Output Voltage (cont'd) ThetrimequationforthepotentiometerconfigurationshowinFigure7. 0.591 Vout= (2Rtrim2 + 2Rpot + Rtrim1Rtrim2 + Rtrim1Rpot + 2Rtrim1) (Rtrim2 + Rpot)Rtrim1 *
Rev. 12.07.09 LGA C Series 6 of 28
WhereVoutisthedesiredoutputvoltage,Rtrim1(k)andRtrim2(k)aretheresistorsinFigure7and Rpotistheresistanceofthepotentiometer.
LGA C Series
REQUIRED TRIM RESISTOR ( )
1000000
Vout
100000 10000 1000 100 10 0 1 2 3 4 5
DESIRED OUTPUT VOLTAGE SETPOINT (V)
Vin
Trim Rtrim1 Rtrim2 Rpot -Sense
Remote ON/OFF
Figure 7 - Output Voltage Trim withPotentiometer
Figure 8 - Typical Trim Curves
Undervoltage Lockout TheseEPD'shavebuilt-inundervoltagelockouttoensurereliableoutputpower.Thelockoutpreventsthe unitfromoperatingwhentheinputvoltageistoolow.TheUVLOfortheLGA03/06/10Ccanbeadjusted withthefollowingequation: 14.8 * 6.81 Ruvlo(k)= 6.81 * Vturn_on - 18.16 TheUVLOfortheLGA20Ccanbeadjustedwiththefollowingequation: Ruvlo(k)= 30.1 * 4.22 8.577 * Vturn_on - 34.32
Technical Reference Note
Embedded Power for Business-Critical Continuity
Applications(cont'd)
Rev. 12.07.09 LGA C Series 7 of 28
Output Capacitance TheLGA C Serieshasoutputcapacitorsinsidetheconverter. Limited output capacitance,10uFforthe 3A/6A/10Aand50uFforthe20A, is required for stable operation. Whenpoweringloadswithlarge dynamiccurrentrequirements,improvedvoltageregulationis obtained by inserting low ESR capacitors ascloseaspossibletotheload. Low ESR ceramiccapacitorswillhandletheshortdurationhigh frequencycomponentsofthedynamiccurrentrequirement. Inaddition,highervaluesofelectrolytic capacitorsshouldbeusedtohandlethemid-frequencycomponents. Itisequallyimportanttousegooddesignpracticeswhenconfiguringthedcdistributionsystem. Low resistanceandlowinductancePCBlayouttracesshouldbeutilized,particularlyinthehighcurrentoutput section.RememberthatthecapacitanceofthedistributionsystemandtheassociatedESRarewithinthe feedbackloopofthepowercapabilities,thusaffectingthestability and dynamic response ofthemodule. Notethatthemaximumratedvalueofoutputcapacitancevariesbetweenmodelsandforeachoutput voltage setpoint. A stability vs. Load Capacitance calculator,(seeyoursalesrepresentative),detailshow anexternalloadcapacitanceinfluencesthegainandphasemarginsoftheLGA C Series modules. Setting Margin Control Tomargintheoutputvoltageup,pullthemargincontrolpinhigh.Tomargindown,pullthemargin controlpinlow.Ifthepinisleftfloating,thefeatureisdisabled.Themaximummarginingrangeis33% oftheoutputvoltagesetting,withmaximumoutputat5.5V.Theequationsformarginingupanddown are as follows: Vmargin_up=0.1182* Rmargin * Rtrim+2k Rtrim Rofs+ Vmargin_down=0.1182* Rmargin * Rtrim+2k Rtrim RofsNote:Themargincontrolpincannotbepulledinthefollowingrange: If,Vin5VthenVmargin(max)=Vin If,Vin>5VthenVmargin(max)=5V
See Table 1 for suggested margining values.
Technical Reference Note
Embedded Power for Business-Critical Continuity
Applications(cont'd)
Setting Margin Control (cont'd)
Margin Up and Down 5%
Vout_nom (V) 0.9 1.2 1.8 2.5 3.3 5.0 Rtrim(k) 3.83 1.96 0.976 0.619 0.432 0.267 Rmargin(k) 2.49 2.49 2.49 2.49 2.49 2.49 Rofs-(k) 10.0 10.0 10.0 10.0 10.0 10.0 Rofs+(k) 10.0 10.0 10.0 10.0 10.0 10.0 Vmargin_down (V) Vout _down (V) Vmargin_up (V) 0.045 0.059 0.090 0.125 0.166 0.250 0.855 1.141 1.710 2.375 3.134 4.750 0.045 0.059 0.090 0.125 0.166 0.250
Rev. 12.07.09 LGA C Series 8 of 28
Vout_up (V) 0.945 1.259 1.890 2.625 3.466 5.250
Margin Up and Down 10%
0.9 1.2 1.8 2.5 3.3 5.0 3.83 1.96 0.976 0.619 0.432 0.267 4.99 4.99 4.99 4.99 4.99 4.99 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 0.090 0.119 0.180 0.250 0.332 0.501 0.810 1.081 1.620 2.250 2.968 4.499 0.090 0.199 0.180 0.250 0.332 0.501 0.990 1.319 1.980 2.750 3.632 5.501
Table1-SuggestedMarginValues
Water Washing Water-washingisnotrecommended. Interface Finish ElectrolessNickelImmersionGold(ENIG). Solder Paste SolderballsarecausedbetweenLGAandsubstrateduetoprintinganexcessiveamountofsolderpaste. Stencilaperturesshouldbewindowpaned;dividingthemintoquadrantsratherthanprintingacontinuous depositovertheentirepad.ThiswillcontroltheamountofsolderavailabletoformajointbetweenLGA andcustomerboard.Additionally,thiswillalsoreducetheformationofvoids. Solder Paste Window Paning
Figure 9: Window Paning
Figure 10: Window Paning
Technical Reference Note
Embedded Power for Business-Critical Continuity
Applications(cont'd)
Rev. 12.07.09 LGA C Series 9 of 28
Recommend Placement Method Useofaplacementmachinewithfrontlightingandpadrecognitionisrecommended.Forbestresults, placetheLGAbasedonthecenterpointofthepadarray(casesilhouettingisnotrecommendedfor placement). Reflow Guidelines ForaSnPbprocess:padsshouldbeabove183C(liquidus)for90secondsmax(60-75secondstypical) withapeaktemperatureof225C.ForaleadfreeSAC305process:padsshouldbeabove217C(liquidus) for90secondsmax(60-75secondstypical)withapeaktemperatureof250C. TheLGASeriesproductspassedsolderabilitytestingperJ-STD-002BandIEC-60068-2-58.Thetestwas conductedbyProcessSciences,IncinAugust,2007 Thermal Hotspot TheelectricaloperatingconditionsoftheLGA(shownbelow)determinehowmuchpowerisdissipated withintheconverter. * Inputvoltage(Vin) * Outputvoltage(Vo) * Outputcurrent(Io) Thefollowingparametersfurtherinfluencethethermalstressesexperiencedbytheconverter: * Ambienttemperature * Airvelocity 1 * Thermalefficiencyoftheendsystemapplication * PartsmountedonsystemPCBthatmayblockairflow * Realairflowcharacteristicsattheconverterlocation Inordertosimplifythethermaldesign,anumberofthermal deratingplotsareprovidedinthisTechnicalReferenceNote. ThesederatinggraphsshowtheloadcurrentoftheLGA versustheambientairtemperatureandforcedairvelocity. However,sincethethermalperformanceisheavilydependent uponthefinalsystemapplication,theuserneedstoensure thethermalreferencepointtemperaturesarekeptwithin therecommendedtemperaturerating.Itisrecommended thatthethermalreferencepointtemperaturesaremeasured usingathermocoupleoranIRcamera.Inordertocomply withstringentEmersonNetworkPowerderatingcriteriathe ambienttemperatureshouldneverexceed85C.Thecase maximumrecommendedtemperatureis100C.Please contactEmersonNetworkPowerforfurthersupport.
2
LGAXXX-0XSADJJ
Figure11:ThermalHotspots 1:WithHeatsink 2:WithoutHeatsink
Technical Reference Note
Embedded Power for Business-Critical Continuity
Applications(cont'd)
Heatsink Accessory Systemshouldbereflowedbeforeattachingheatsink. 1. Cleanthetopsurfaceofthecasewithisopropylalcoholandensurethecasesurfaceisair-dried. 2. Removeclearplasticlinerfrombottomoftheheatsinktoexposetheadhesive. 3. Alignheatsinkwithcaseandapplyevenpressure(10-15PSI)for10-20seconds.
Recommended Air flow direction
Rev. 12.07.09 LGA C Series 10 of 28
Liner
HeatsinkNumberSystemwithOptions
Product Family Product Package Height*
LGA
-
HTSK
Product HTSK=Heatsink
-
KIT
Package KIT=Heatsinkand Adhesive
-
XXX
LGA20 + Heatsink 045=0.45" 048=0.48" 050=0.50"
*HeightisthetotalheightoftheLGA20C-00SADJJwithheatsinkattached.
Technical Reference Note
Embedded Power for Business-Critical Continuity
AllModels
Parameter Absolute Maximums Input Voltage Enable Voltage Operating Ambient Temperature Non-Operating Ambient Temperature Case Temperature Output Specifications Ouput Voltage Output Setpoint Accuracy Output Regulation (Line) Duty Cycle Turn On Specifications TurnOnDelay(withVin) TurnOnDelay(withEnable) Output Rise TIme Enable Specifications SignalLow(UnitOff) Signal Low Current SignalHigh(UnitOn) SignalHighCurrent Material Ratings Flammability MoistureSensitivityLevel MaterialType International Standards Solderability J-STD-002B IEC-60068-2-58 UL94V-0 3 FR4 PCB 12 Vin 0 0 15 1 400 0.4 10% - 90% 2 2.0 1.5 3 3 0.591 -1.0 -0.2 90 5.1 +1.0 +0.2 0 0 -40 -40 14.0 5 85 125 100 Test Conditions Min Typ Max
Rev. 12.07.09 LGA C Series 11 of 28
Units V V C C C V % % % ms ms ms
V uA V uA
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA03C
Parameter Input Specifications Input Voltage InputCurrent(Max) Input Current (No Load) Input Current (Standby) Input Capacitance (Internal) InputCapacitance(External) Output Specifications Output Current Output Capacitance (Internal) OutputCapacitance(External) 12Vin,0.9Vout(Startupcapacitance) 12Vin,2.5Vout(Startupcapacitance) 12Vin,5.0Vout(Startupcapacitance) OutputRipple/Noise(Peak/Peak) 5Vin,0.9Vout,10uFCout 12Vin,2.5Vout,10uFCout 12Vin,5Vout,10uFCout Efficiency 5Vin,0.9Vout,3Aout 12Vin,2.5Vout,3Aout 12Vin,5Vout,3Aout DynamicLoadResponse(PeakDeviation) Dynamic Load Response (Setting Time) DynamicLoadResponse(PeakDeviation) Dynamic Load Response (Setting Time) Protection Specification Over Current Protection General Specifications MTBF Weight SwitchingFrequency JunctiontoCaseThermalResistance TelcordiaSR-332,MethodII,PartsStress, 40CAmbient,400LFM,100%Load 28,037,062 0.1 1,000 3 HiccupMode 6 12Vin,0.9Vout,1.5-3at5A/us,10uFCout 12Vin,0.9Vout,1.5-3at5A/us,10uFCout 12Vin,2.5Vout,1.5-3at5A/us,10uFCout 12Vin,2.5Vout,1.5-3at5A/us,10uFCout 10 10 10 15 20 30 79.1 86.4 91.8 85 8 95 15 0 20 3,000 1,100 450 3 Required for input ripple current 12.0Vin,2.5Vout,0Aout 12.0Vin,Moduledisabled 55 14 10 1 Internalinputcapacitancerated16Vdcmax. 3 14.0 3 Test Conditions Min Typ Max
Rev. 12.07.09 LGA C Series 12 of 28
Units V A mA mA uF uF A uF uF uF uF mV mV mV % % % mV us mV us A Hours oz kHz C/W
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA03C
All Inputs and Outputs
4 3.8 3.6 3.4 3.2 3 2.8 2.6 2.4 2.2 2 30 35 40 45 50 55 60 65 70 75 80 85 Ambient (C) 100 LFM
Rev. 12.07.09 LGA C Series 13 of 28
2.50V Efficiency
0.95 0.9 0.85 0.8 0.75 0 1 2 3 Output Current (A)
Figure13:2.5VEfficiencyvs.Load
Output Current (A)
3 Vin 5 Vin 7 Vin 12 Vin 13.8 Vin
Figure12:ThermalDeratingCurveforAllInputsandOutputs
5.00V Efficiency
1 0.95 0.9 0.85 0.8 0 1 2 3 Output Current (A)
Figure14:5VEfficiencyvs.Load Figure 15: Remote On/Off (Channel1:OutputVoltage,Channel2:PGood, Channel3:Enable)
7 Vin 12 Vin 13.8 Vin
Figure 16: Typical Output Ripple
Figure 17: Transient Response 100% - 50% (Channel4:CurrentStepat1A/div, Channel1:OutputVoltageDeviation)
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA03C
Rev. 12.07.09 LGA C Series 14 of 28
Figure 18: Transient Response 50% - 100% (Channel4:CurrentStepat1A/div, Channel1:OutputVoltageDeviation)
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA06C
Parameter Input Specifications Input Voltage InputCurrent(Max) Input Current (No Load) Input Current (Standby) Input Capacitance (Internal) InputCapacitance(External) Output Specifications Output Current Output Capacitance (Internal) OutputCapacitance(External) 12Vin,0.9Vout(Startupcapacitance) 12Vin,2.5Vout(Startupcapacitance) 12Vin,5.0Vout(Startupcapacitance) OutputRipple/Noise(Peak/Peak) 5Vin,0.9Vout,10uFCout 12Vin,2.5Vout,10uFCout 12Vin,5Vout,10uFCout Efficiency 5Vin,0.9Vout,6Aout 12Vin,2.5Vout,6Aout 12Vin,5Vout,6Aout DynamicLoadResponse(PeakDeviation) Dynamic Load Response (Setting Time) DynamicLoadResponse(PeakDeviation) Dynamic Load Response (Setting Time) Protection Specification Over Current Protection General Specifications MTBF Weight SwitchingFrequency JunctiontoCaseThermalResistance TelcordiaSR-332,MethodII,PartsStress, 40CAmbient,400LFM,100%Load 27,141,984 0.1 1,000 3 HiccupMode 11 12Vin,0.9Vout,3-6at5A/us,10uFCout 12Vin,0.9Vout,3-6at5A/us,10uFCout 12Vin,2.5Vout,3-6at5A/us,10uFCout 12Vin,2.5Vout,3-6at5A/us,10uFCout 10 10 10 20 35 50 80.1 86.5 92.1 125 8 175 8 0 20 7,500 1,500 750 6 Required for input ripple current 12.0Vin,2.5Vout,0Aout 12.0Vin,Moduledisabled 94 14 10 1 Internalinputcapacitancerated16Vdcmax. 3 14.0 6 Test Conditions Min Typ Max
Rev. 12.07.09 LGA C Series 15 of 28
Units V A mA mA uF uF A uF uF uF uF mV mV mV % % % mV us mV us A Hours oz kHz C/W
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA06C
All Inputs and Outputs
6.1 6.08 6.06 6.04 6.02 6 5.98 5.96 5.94 5.92 5.9 30 100 LFM
Rev. 12.07.09 LGA C Series 16 of 28
2.50V Efficiency
0.95 0.9 0.85 0.8 3 Vin 5 Vin 7 Vin 12 Vin 13.8 Vin 0 2 4 6
Output Current (A)
35
40
45
50
55
60
65
70
75
80
85
Ambient (C)
Output Current (A)
Figure20:2.5VEfficiencyvs.Load
Figure19:ThermalDeratingCurveforAllInputsandOutputs
5.01V Efficiency
1 0.95 0.9 0.85 0.8 0 2 4 6
Figure 22: Remote On/Off (Channel1:OutputVoltage,Channel2:PGood, Channel3:Enable)
7 Vin 12 Vin 13.8 Vin
Figure21:5VEfficiencyvs.Load
Figure 23: Typical Output Ripple
Figure 24: Transient Response 100% - 50% (Channel4:CurrentStepat2A/div, Channel1:OutputVoltageDeviation)
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA06C
Rev. 12.07.09 LGA C Series 17 of 28
Figure 25: Transient Response 50% - 100% (Channel4:CurrentStepat2A/div, Channel1:OutputVoltageDeviation)
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA10C
Parameter Input Specifications Input Voltage InputCurrent(Max) Input Current (No Load) Input Current (Standby) Input Capacitance (Internal) InputCapacitance(External) Output Specifications Output Current Output Capacitance (Internal) OutputCapacitance(External) 12Vin,0.9Vout(Startupcapacitance) 12Vin,2.5Vout(Startupcapacitance) 12Vin,5.0Vout(Startupcapacitance) OutputRipple/Noise(Peak/Peak) 5Vin,0.9Vout,10uFCout 12Vin,2.5Vout,10uFCout 12Vin,5Vout,10uFCout Efficiency 5Vin,0.9Vout,10Aout 12Vin,2.5Vout,10Aout 12Vin,5Vout,10Aout DynamicLoadResponse(PeakDeviation) Dynamic Load Response (Setting Time) DynamicLoadResponse(PeakDeviation) Dynamic Load Response (Setting Time) Protection Specification Over Current Protection General Specifications MTBF Weight SwitchingFrequency JunctiontoCaseThermalResistance TelcordiaSR-332,MethodII,PartsStress, 40CAmbient,400LFM,100%Load 27,141,984 0.1 1,000 9 HiccupMode 20 12Vin,0.9Vout,5-10at5A/us,10uFCout 12Vin,0.9Vout,5-10at5A/us,10uFCout 12Vin,2.5Vout,5-10at5A/us,10uFCout 12Vin,2.5Vout,5-10at5A/us,10uFCout 10 10 10 30 40 45 76.6 85.9 91.7 90 8 135 8 0 20 7,500 2,400 1,200 10 Required for input ripple current 12.0Vin,2.5Vout,0Aout 12.0Vin,Moduledisabled 100 14 10 1 Internalinputcapacitancerated16Vdcmax. 3 14.0 10 Test Conditions Min Typ Max
Rev. 12.07.09 LGA C Series 18 of 28
Units V A mA mA uF uF A uF uF uF uF mV mV mV % % % mV us mV us A Hours oz kHz C/W
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA10C
0.9V 3.3Vin
10 9.5 9 8.5 8 7.5 7 6.5 6 5.5 5 30 40 50 60 Ambient (C) 70 80
10 9.5 9 8.5 8 7.5 7 6.5 6 5.5 5 30 40 50 60 Ambient (C) 70 80
Rev. 12.07.09 LGA C Series 19 of 28
0.9V 5Vin
Output Current (A)
100LF M 200LF M 300LF M 400LF M
Output Current (A)
100LF M
Figure26:ThermalDeratingCurve-0.9V
Figure27:2ThermalDeratingCurve-0.9V
0.9V 12Vin
10 9.8 9.6 9.4 9.2 9 8.8 8.6 8.4 8.2 8 30 40 50 60 Ambient (C) 70 80
10 9.5 9 8.5 8 7.5 7 6.5 6 5.5 5 30 40 50
2.5V 3.3Vin
Output Current (A)
100LF M 200LF M 300LF M 400LF M
Output Current (A)
100LF M 200LF M 300LF M 400LF M
60 Ambient (C)
70
80
Figure28:ThermalDeratingCurve-0.9V
Figure29:ThermalDeratingCurve-2.5V
2.5V 5Vin
10 9.5 9 8.5 8 7.5 7 6.5 6 5.5 5 30 40 50 60 Ambient (C) 70 80 100LF M 200LF M 300LF M 400LF M
2.5V 12Vin
10 9.8 9.6 9.4 9.2 9 8.8 8.6 8.4 8.2 8 30 40 50 60 Ambient (C) 70 80
Output Current (A)
Output Current (A)
100LF M 200LF M 300LF M 400LF M
Figure30:ThermalDeratingCurve-2.5V
Figure31:ThermalDeratingCurve-2.5V
Technical Reference Note
Embedded Power for Business-Critical Continuity
Rev. 12.07.09 LGA C Series 20 of 28
5V 12Vin
10 9.8 9.6 9.4 9.2 9 8.8 8.6 8.4 8.2 8 30 40 50 60 Ambient (C) 70 80 100LF M 200LF M 300LF M 400LF M
2.5V Efficiency
0.95 0.9 0.85 0.8 0 5 Output Current (A)
Figure33:2.5VEfficiencyvs.Load
3 Vin 5 Vin 7 Vin 12 Vin 13.8 Vin 10
Output Current (A)
Figure32:ThermalDeratingCurve-5V
5.0V Efficiency
1 0.95 0.9 0.85 0 5 Output Current (A)
Figure34:5VEfficiencyvs.Load Figure 35: Remote On/Off (Channel1:OutputVoltage,Channel2:PGood, Channel3:Enable)
7 Vin 12 Vin 13.8 Vin
10
Figure 36: Typical Output Ripple
Figure 37: Transient Response 100% - 50% (Channel1:OutputVoltageDeviation, Channel2:CurrentStepat2A/div)
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA10C
Rev. 12.07.09 LGA C Series 21 of 28
Figure 38: Transient Response 50% - 100% (Channel1:OutputVoltageDeviation, Channel2:CurrentStepat2A/div)
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA20C
Parameter Input Specifications Input Voltage InputCurrent(Max) Input Current (No Load) Input Current (Standby) Input Capacitance (Internal) InputCapacitance(External) Output Specifications Output Current Output Capacitance (Internal) OutputCapacitance(External) 12Vin,0.9Vout(Startupcapacitance) 12Vin,2.5Vout(Startupcapacitance) 12Vin,5.0Vout(Startupcapacitance) OutputRipple/Noise(Peak/Peak) 5Vin,0.9Vout,10uFCout 12Vin,2.5Vout,10uFCout 12Vin,5Vout,10uFCout Efficiency 5Vin,0.9Vout,20Aout 12Vin,2.5Vout,20Aout 12Vin,5Vout,20Aout DynamicLoadResponse(PeakDeviation) Dynamic Load Response (Setting Time) DynamicLoadResponse(PeakDeviation) Dynamic Load Response (Setting Time) Protection Specification Over Current Protection General Specifications MTBF Weight SwitchingFrequency JunctiontoCaseThermalResistance TelcordiaSR-332,MethodII,PartsStress, 40CAmbient,400LFM,100%Load 28,388,596 0.1 800 2 HiccupMode 27 12Vin,0.9Vout,10-20at5A/us,50uFCout 12Vin,0.9Vout,10-20at5A/us,50uFCout 12Vin,2.5Vout,10-20at5A/us,50uFCout 12Vin,2.5Vout,10-20at5A/us,50uFCout 50 50 50 25 45 70 77.3 86.6 91.2 95 12 175 20 0 20 7,500 2,400 500 20 Required for input ripple current 12.0Vin,2.5Vout,0Aout 12.0Vin,Moduledisabled 87 13 10 10 Internalinputcapacitancerated16Vdcmax. 4.5 14.0 20 Test Conditions Min Typ Max
Rev. 12.07.09 LGA C Series 22 of 28
Units V A mA mA uF uF A uF uF uF uF mV mV mV % % % mV us mV us A Hours oz kHz C/W
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA20C
0.9Vout 5Vin
20 18
Output Current (A)
Output Current (A)
Rev. 12.07.09 LGA C Series 23 of 28
0.9Vout 12Vin
20 18 16 14 12 10 8 6 4 2 100LFM 200LFM 300LFM 400LFM
100LF M 200LF M 300LF M 400LF M
16 14 12 10 8 6 4 2 30 40 50 60 Ambient (C) 70 80
30
40
50
60 Ambient (C)
70
80
Figure39:ThermalDeratingCurve(5Vin-0.9Vout)
Figure40:ThermalDeratingCurve(12Vin-0.9Vout)
2.5Vout 5Vin
20 18
Output Current (A)
Output Current (A)
2.5Vout 12Vin
20 18 16 14 12 10 8 6 4 2 100LFM 200LFM 300LFM 400LFM
100LF M 200LF M 300LF M 400LF M
16 14 12 10 8 6 4 2 30 40 50 60 Ambient (C) 70 80
30
40
50
60 Ambient (C)
70
80
Figure41:ThermalDeratingCurve(5Vin-2.5Vout)
Figure42:ThermalDeratingCurve(12Vin-2.5Vout)
5Vout 12Vin
20 18
Output Current (A) Output Current (A)
0.9Vout 5Vin
20 18 16 14 12 10 8 6 4 2 100LFM 200LFM
100LF M 200LF M 300LF M 400LF M
16 14 12 10 8 6 4 2 30 40 50 60 Ambient (C) 70 80
30
40
50
60 Ambient (C)
70
80
Figure43:ThermalDeratingCurve(12Vin-5Vout)
Figure44:ThermalDeratingCurve(5Vin-0.9Vout) with0.5"Heatsink
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA20C
0.9Vout 12Vin
20 18
Output Current (A)
Rev. 12.07.09 LGA C Series 24 of 28
2.5Vout 5Vin
20 18
Output Current (A)
16 14 12 10 8 6 4 2 30 40 50 60 Ambient (C) 70 80 100LFM 200LFM 300LFM
16 14 12 10 8 6 4 2 30 40 50 60 Ambient (C) 70 80 100LFM 200LFM 300LFM 400LFM
Figure45:ThermalDeratingCurve(12Vin-0.9Vout) with0.5"Heatsink
2.5Vout 12Vin
20 18
Output Current (A) Output Current (A)
Figure46:ThermalDeratingCurve(5Vin-2.5Vout) with0.5"Heatsink
5Vout 12Vin
20 18 16 14 12 10 8 6 4 2 100LFM 200LFM 300LFM 400LFM
16 14 12 10 8 6 4 2 30 40 50 60 Ambient (C) 70 80 100LFM 200LFM 300LFM 400LFM
30
40
50
60 Ambient (C)
70
80
Figure47:ThermalDeratingCurve(12Vin-2.5Vout) with0.5"Heatsink
Figure48:ThermalDeratingCurve(12Vin-5Vout) with0.5"Heatsink
2.51V Efficiency
0.95 0.9 0.85 0.8 0 5 10 15 20 Output Current (A)
Figure49:2.5VEfficiencyvs.Load
5.06V Efficiency
1 5 Vin 7 Vin 12 Vin 13.8 Vin 0.95 0.9 0.85 0.8 0.75 0 5 10 15 20 Output Current (A)
Figure50:5VEfficiencyvs.Load
7 Vin 12 Vin 13.8 Vin
Technical Reference Note
Embedded Power for Business-Critical Continuity
LGA20C
Rev. 12.07.09 LGA C Series 25 of 28
Figure 51: Remote On/Off (Channel1:OutputVoltage,Channel2:PGood, Channel3:Enable)
Figure 52: Typical Output Ripple
Figure 53 Transient Response 50% - 100% (Channel1:OutputVoltageDeviation, Channel4:CurrentStepat5A/div)
Figure 54: Transient Response 100% - 50% (Channel1:OutputVoltageDeviation, Channel4:CurrentStepat5A/div)
Technical Reference Note
Embedded Power for Business-Critical Continuity
Mechanicaldrawings
.139 3.53 MAX .139 A
Rev. 12.07.09 LGA C Series 26 of 28
SECTION A-A SCALE 4 : 1 SECTION A-A SCALE 4 : 1 .020.003 0.510.08 .031 0.79 PCB .020.003 0.510.08 REF
A A
3.53 MAX
.102 2.59 REF
A A
.650 16.51 MAX .650 16.51 MAX .650 16.51 MAX .650 16.51 MAX
.102 2.59 REF A
ComponentHeight .031 0.79 PCB REF Model# DIMAin(mm)
LGA03 LGA06 LGA10
.008 A
0.129 (3.27)
A
LGA20
0.210 (5.33)
.008 A
Recommended Application
System Board Footprint Solder Paste Stencil
RecommendStencilthicknessof6mil (see window paning on page 9)
.487 12.37 .392 9.96 .343 8.71 .294 7.47 .245 6.22 .196 4.98 .147 3.73 .098 2.49
0.220 (5.59) 0.269 (6.83) 0.318 (8.08) 0.367 (9.32) 0.416 (10.57) 0.465 (11.81) 0.514 (13.06) 0.563 (14.30) 0.612 (15.54)
.049 1.24
2X .120 X .110 0.690 (17.53) 0.570 (14.48) PIN 10 0.435 (11.05) PIN 9
0 (0)
00
14X .025 X .025
.104 2.64
0.024" X.024" 14X 13X 00 .042 1.07 .024 0.61 .114 2.90 .177 4.50 0.114" X 0.114" 8X 0.114" X 0.104" 2X .024 0.61 .045 1.14 .090 2.29 .135 3.43 .180 4.57 .225 5.72
PIN 16
PIN 24 PIN 15 0.612 (15.55) 0.567 (14.40) 0.522 (13.26) 0.477 (12.12) 0.432 (10.97) 0.387 (9.83) PIN 11 PIN 8 PIN 4 MODULE OUTLINE
0.295 (7.50) PIN 5 0.125 (3.18) 0 (0) 0.418 (10.62) 0.690 (17.53) 0.564 (14.33) 0 (0) 0.126 (3.20) 0.272 (6.91) 8X .120 X .120 PIN 1
.317 8.05
.114 2.90
.487 12.37
0 (0) KEEP OUT AREA
.114 2.90 .340 8.64 .194 4.93 .048 1.22
ToleranceNote:0.010(0.25)
Technical Reference Note
Embedded Power for Business-Critical Continuity
Packaging
LGA03C,06C,10C EIA DIMENSIONS
W E F So P Po P2 Do D1 T Ao Bo Ko 32.00.30 1.750.10 14.20.10 28.40.10 24.00.10 4.00.10 2.00.10 O 1.5 +0.10 -0.00 O2.0MIN 0.400.05 16.60.10 16.70.10 3.70.10
Rev. 12.07.09 LGA C Series 27 of 28
LGA20C LGA20C EIA DIMENSIONS
W E F So P Po P2 Do D1 T Ao Bo 32.00.30 1.750.10 14.20.10 28.40.10 24.00.10 4.00.10 2.00.10 O 1.5 +0.10 -0.00 O2.0MIN 0.400.05 16.80.10 16.80.10 5.80.10
Notes: a) b) c) d) e)
Ko
T&RpackagingcomesinStandard13"reelsize. Tapematerial:Black,Anti-staticPolystyreneAminefree. Surface Resistivity: <1012 Ohms/Sq Modulequanity/reel: LGA03C,LGA06C,LGA10C =600pcs LGA20C =450pcs. ProductsareMSL3.
Technical Reference Note
Embedded Power for Business-Critical Continuity
ModelNumberSystemwithOptions
Product Family Rated Output Current Performance Input Voltage Type of Output Options RoHS Compliance
Rev. 12.07.09 LGA C Series 28 of 28
Americas
LGA
Land Grid Array
XX
Rated Output Current 03=3Amp 06=6Amp 10=10Amp 20=20Amp
C
Performance C=Cost Optimized
-
XX
Input Voltage 00=3-14.0V 01=4.5-14.0V
SADJ
Type of Output Single Adjustable Output
X
Options X=Various Options (see Sales Rep)
J
RoHS Compliance J=Pbfree(RoHS 6/6 compliant)
5810 Van Allen Way Carlsbad,CA92008 USA Telephone:+17609304600 Facsimile: +1 760 930 0698
Europe (UK)
HeatsinkNumberSystemwithOptions
Product Family Product Package Height*
WaterfrontBusinessPark MerryHill,Dudley WestMidlands,DY51LX UnitedKingdom Telephone:+44(0)1384842211 Facsimile: +44 (0) 1384 843 355
LGA
Land Grid Array
-
HTSK Product HTSK=Heatsink
KIT
Package Heatsinkand Adhesive
-
XXX
LGA20 + Heatsink 045=0.45" 048=0.48" 050=0.50"
Asia (HK)
16th-17thFloors,LuPlaza 2WingYipStreet,KwunTong Kowloon,HongKong Telephone:+85221763333 Facsimile: +852 2176 3888 Forglobalcontact,visit:
*HeightisthetotalheightoftheLGA20C-00SADJJwithheatsinkattached.
Operating Information
Output Power (Max.) 15 W 30 W 50 W 100 W NA Input Voltage 3-14.0 Vdc 3-14.0 Vdc 3-14.0 Vdc 4.5-14.0 Vdc NA Output Voltage 0.59-5.1 Vdc 0.59-5.1 Vdc 0.59-5.1 Vdc 0.59-5.1 Vdc NA Output Current (Min.) 0A 0A 0A 0A NA Output Current (Max.) 3A 6A 10 A 20 A NA Efficiency (Typical) 92% 92% 92% 91% NA Regulation Load 0.5% 0.5% 0.5% 0.5% NA Standard Model Numbers LGA03C-00SADJJ LGA06C-00SADJJ LGA10C-00SADJJ LGA20C-01SADJJ LGA-HTSK-KIT-XXX
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PinChart
Pin Assignments
Single Output 1 Vout 2 Vout 3 Vout 4 Vout 5 GND 6 GND 7 GND 8 GND 9 10 11 12 13 14 15 16 Vin Vin NC - Offset + Offset - Sense + Sense NC 17 18 19 20 21 22 23 24 NC NC NC NC Enable Power Good MarginControl Trim
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