Product # IQ12xxxQTCxx

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-IQ12QTX Rev. B

09/23/08

Page 6

Technical Specification

Input:

Output:

Current:

Part no.:

9-22 V

1.8 V

40 A

IQ12018QTC40

Parameter

Min.

Typ.

Max. Units notes & Conditions

InPUT ChaRaCTeRISTICS

MaximumInputCurrent

13.0

A

No-LoadInputCurrent

314

600

mA

DisabledInputCurrent

2.0

4.0

mA

ResponsetoInputTransient

0.2

V

250V/msinputtransient;100µFoutputcap.

InputTerminalRippleCurrent

168

mA

RMS

RecommendedInputFuse

30

A

Fastactingexternalfuserecommended

InputFilterComponentValues(L\C)

0.47\24

µH\µF Internalvalues;seeFigureE

OUTPUT ChaRaCTeRISTICS

OutputVoltageSetPoint

1.782

1.800

1.818

V

OutputVoltageRegulation

OverLine

+0.1

+0.3

%

OverLoad

+0.1

+0.3

%

OverTemperature

-27

27

mV

TotalOutputVoltageRange

1.755

1.845

V

Oversample,line,load,temperature&life

20MHzbandwidth

Peak-to-Peak

82

160

mV

FullLoad

RMS

14

25

mV

FullLoad

OperatingOutputCurrentRange

0

40

A

Subjecttothermalderating

OutputDCCurrent-LimitInception

44

48

52

A

OutputVoltage10%Low

OutputDCCurrent-LimitShutdownVoltage

0.9

V

Back-DriveCurrentLimitwhileEnabled

0.3

A

Negativecurrentdrawnfromoutput

Back-DriveCurrentLimitwhileDisabled

0

15

50

mA

Negativecurrentdrawnfromoutput

MaximumOutputCapacitance

10,000

µF

Voutnominalatfullload(resistiveload)

OutputVoltageduringLoadCurrentTransient

ForaStepChangeinOutputCurrent(0.1A/µs)

90

mV

SettlingTime

200

µs

OutputVoltageTrimRange

-20

+10

%

MeasuredacrossPins8&4;CommonFigure3

OutputVoltageRemoteSenseRange

+10

%

MeasuredacrossPins8&4

OutputOver-VoltageProtection

117

122

127

%

LoadCurrentScaleFactor

2667

SeeOutputLoadCurrentapp.noteonourweb

eFFICIenCy

100%Load

82

%

SeeFigure1forefficiencycurve

50%Load

83

%

SeeFigure1forefficiencycurve

note 1:Outputisterminatedwith1µFceramicand15µFlow-ESRtantalumcapacitors.

Forapplicationsrequiringreducedoutputvoltagerippleandnoise,consultSynQorapplicationssupport(e-mail:support@synqor.com)

ambienttemperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.