www.德州仪器.com
ELECTRICALCHARACTERISTICS
TPS60231
SLVS544–OCTOBER2004
V
I
=3.6v,en1=en2=v
I
,t
一个
=-40
°
Cto85
°
c(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
SUPPLYVOLTAGEANDCURRENT
V
I
InputvoltagerangeI
O
=0mato75ma2.76.5v
V
I
=4.2v,x1-模式,en1=en2=1,iset=20µa200µa
I
Q
Operatingquiescentcurrent
I
O
=0ma,x1.5-mode2.1ma
I
SD
shutdowncurrenten2=en1=gnd0.11µa
CHARGEPUMPSTAGE
V
输出
overvoltagelimitled1unconnected,v
I
=4.2v5.5v
StartuptimeC
O
=1µf,i
DX
≥
0.9i
DX
,set375µs
Softstartduration160µs
fswitchingfrequency0.7511.25mhz
η
EfficiencyV
I
=3.7v,i
LED
=15maeach,v
DX
=3.1v83%
ShutdowntemperatureTemperaturerising160
°
C
Shutdowntemperaturehysteresis20
°
C
inputcurrentlimiten2=en1=1,iset=100µa350ma
CURRENTSINKS
recommendedmaximumcurrentpercur-3.2v
≤
V
I
≤
6.5v25ma
I
Dx
rentsink
CurrentintoeachcurrentsinkwhenISET50mA
I
Dx
3.0v
≤
V
I
≤
6.5v,isetshortedtognd
isshortedtoGND
CurrentmatchingbetweenanytwooutputsV
Dx
=3.1v,t
一个
=25
°
c–2%0.4%2%
3.2v
≤
V
I
≤
6.5v,v
Dx
=3.1v,en1=en2=1,
±
3%
Lineregulation
ISET=80µA
en2=0,en1=1200
V
ISET
referencevoltageforcurrentseten2=1,en1=0400mv
en2=1,en1=1580600620
IsetRecommendedISETpincurrentrange4130µA
KI
Dx
toisetcurrentratioen2=en1=1,iset=80µa230260280
en2=0,en1=1200
V
源
voltageatdxtognden2=1,en1=0300mv
en2=1,en1=1400
enable1,enable2
V
IH
en1,en2highlevelinputvoltage1.3v
V
IL
en1,en2lowlevelinputvoltage0.3v
en1,en2trippointhysteresis50mv
I
IKG
en2inputleakagecurrenten1,en2=gndoren2=v
I
,v
I
=6.5v0.011µa
I
IKG
EN1inputleakagecurrentEN1=V
I
,v
I
=4.2v1115µa
V
(uvlo)
undervoltagelockoutthresholdinputvoltagefalling2.1v
Undervoltagelockouthysteresis50mV
FrequencyrangeatPWM050kHz
recommendedon-timeforpwmsignal2.5µs
DelaytimewhenEN1=EN2gotoGNDafterwhich
shutdowndelaytime0.50.851.5ms
theTPS60231shutsdowncompletely
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