Input: 9-36 V
Output: 1.8 V
Current: 40 A
Part ꢀo.: IQ18018QTC40
Technical Specification
IQ18018QTC40 ꢁꢃꢁCTRICꢂꢃ CꢅꢂRꢂCTꢁRISTICS (1.8 VOUT)
TAꢀ=ꢀ25ꢀ°C,ꢀairflowꢀrateꢀ=ꢀ300ꢀLFM,ꢀVINꢀ=ꢀ18ꢀVDCꢀunlessꢀotherwiseꢀnoted;ꢀfullꢀoperatingꢀtemperatureꢀrangeꢀisꢀ-40ꢀ°Cꢀtoꢀ+100ꢀ°Cꢀ
ambientꢀtemperatureꢀwithꢀappropriateꢀpowerꢀderating.ꢀꢀSpecificationsꢀsubjectꢀtoꢀchangeꢀwithoutꢀnotice.
Parameter
Min.
Typ.
Max. Units ꢀotes & Conditions
IꢀPUT CꢅꢂRꢂCTꢁRISTICS
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
MaximumꢀInputꢀCurrentꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
182ꢀ
2.5ꢀ
12.8ꢀ
Aꢀ
mA
mA
Vꢀ
mAꢀ
Aꢀ
9ꢀVIN;ꢀtrimꢀup;ꢀinꢀcurrentꢀlimit
No-LoadꢀInputꢀCurrentꢀ
230ꢀ
DisabledꢀInputꢀCurrentꢀ
4.0ꢀ
ꢀ
ꢀ
ResponseꢀtoꢀInputꢀTransientꢀ
InputꢀTerminalꢀRippleꢀCurrentꢀ
RecommendedꢀInputꢀFuseꢀ
InputꢀFilterꢀComponentꢀValuesꢀ(L\C)ꢀ
0.18ꢀ
285ꢀ
ꢀ
300ꢀV/msꢀinputꢀtransient;ꢀ100ꢀµFꢀoutputꢀcap.
RMS
30ꢀ
ꢀ
Fastꢀactingꢀexternalꢀfuseꢀrecommended
µH\µFꢀ Internalꢀvalues;ꢀseeꢀFigureꢀE
0.47\18ꢀ
OUTPUT CꢅꢂRꢂCTꢁRISTICS
OutputꢀVoltageꢀSetꢀPointꢀ
OutputꢀVoltageꢀRegulation
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
1.782ꢀ
1.800ꢀ
1.818ꢀ
V
ꢀ
ꢀ
ꢀ
OverꢀLineꢀ
ꢀ
ꢀ
+0.1ꢀ
+0.1ꢀ
ꢀ
ꢀ
ꢀ
106ꢀ
16ꢀ
ꢀ
+0.3ꢀ
%
%
OverꢀLoadꢀ
+0.3ꢀ
OverꢀTemperatureꢀ
-27ꢀ
27ꢀ
mV
TotalꢀOutputꢀVoltageꢀRangeꢀ
1.755ꢀ
1.845ꢀ
Vꢀ
ꢀ
Overꢀsample,ꢀline,ꢀload,ꢀtemperatureꢀ&ꢀlife
20ꢀMHzꢀbandwidth
FullꢀLoad
FullꢀLoad
Subjectꢀtoꢀthermalꢀderating
OutputꢀVoltageꢀ10%ꢀLow
OutputꢀVoltageꢀRippleꢀandꢀNoiseꢀ1ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Peak-to-Peakꢀ
RMSꢀ
ꢀ
210ꢀ
mVꢀ
mVꢀ
Aꢀ
ꢀ
30ꢀ
OperatingꢀOutputꢀCurrentꢀRangeꢀ
0ꢀ
40ꢀ
OutputꢀDCꢀCurrent-LimitꢀInceptionꢀ
OutputꢀDCꢀCurrent-LimitꢀShutdownꢀVoltageꢀ
Back-DriveꢀCurrentꢀLimitꢀwhileꢀEnabledꢀ
Back-DriveꢀCurrentꢀLimitꢀwhileꢀDisabledꢀ
MaximumꢀOutputꢀCapacitanceꢀ
44ꢀ
48ꢀ
0.9ꢀ
1.1ꢀ
15ꢀ
ꢀ
52ꢀ
Aꢀ
ꢀ
ꢀ
ꢀ
ꢀ
V
Aꢀ
Negativeꢀcurrentꢀdrawnꢀfromꢀoutput
Negativeꢀcurrentꢀdrawnꢀfromꢀoutput
Voutꢀnominalꢀatꢀfullꢀloadꢀ(resistiveꢀload)
0ꢀ
50ꢀ
mAꢀ
µFꢀ
ꢀ
ꢀ
10,000ꢀ
OutputꢀVoltageꢀduringꢀLoadꢀCurrentꢀTransientꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ForꢀaꢀStepꢀChangeꢀinꢀOutputꢀCurrentꢀ(0.1ꢀA/µs)ꢀ
SettlingꢀTimeꢀ
ꢀ
88ꢀ
100ꢀ
ꢀ
ꢀ
mVꢀ
µsꢀ
%ꢀ
%ꢀ
%ꢀ
ꢀ
50%ꢀtoꢀ75%ꢀtoꢀ50%ꢀIOUTꢀmax
Toꢀwithinꢀ1%ꢀVOUTꢀnom
MeasuredꢀacrossꢀPinsꢀ8ꢀ&ꢀ4;ꢀCommonꢀFigureꢀ3
MeasuredꢀacrossꢀPinsꢀ8ꢀ&ꢀ4
Overꢀfullꢀtempꢀrange;ꢀ%ꢀofꢀnominalꢀVOUT
SeeꢀOutputꢀLoadꢀCurrentꢀapp.ꢀnoteꢀonꢀourꢀweb
ꢀ
-20ꢀ
ꢀ
ꢀ
OutputꢀVoltageꢀTrimꢀRangeꢀ
+10ꢀ
+10ꢀ
127ꢀ
ꢀ
OutputꢀVoltageꢀRemoteꢀSenseꢀRangeꢀ
OutputꢀOver-VoltageꢀProtectionꢀ
LoadꢀCurrentꢀScaleꢀFactorꢀ
ꢀ
117ꢀ
ꢀ
122ꢀ
2667ꢀ
ꢁFFICIꢁꢀCꢄ
ꢀ
ꢀ
100%ꢀLoadꢀ
50%ꢀLoadꢀ
ꢀ
ꢀ
83ꢀ
85ꢀ
ꢀ
ꢀ
%ꢀ
%ꢀ
SeeꢀFigureꢀ1ꢀforꢀefficiencyꢀcurve
SeeꢀFigureꢀ1ꢀforꢀefficiencyꢀcurve
ꢀote 1:ꢀOutputꢀisꢀterminatedꢀwithꢀ1ꢀµFꢀceramicꢀandꢀ15ꢀµFꢀlow-ESRꢀtantalumꢀcapacitors.ꢀ
ꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀꢀForꢀapplicationsꢀrequiringꢀreducedꢀoutputꢀvoltageꢀrippleꢀandꢀnoise,ꢀconsultꢀSynQorꢀapplicationsꢀsupportꢀ(e-mail:ꢀsupport@synqor.com)
Product # IQ18xxxQTCxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-IQ18QTX Rev. B
09/23/08
Page 6
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