www.德州仪器.com
ELECTRICALCHARACTERISTICS
tps61020,tps61024
tps61025,tps61027
SLVS451A–SEPTEMBER2003–REVISEDAPRIL2004
overrecommendedfree-airtemperaturerangeandoverrecommendedinputvoltagerange(typicalatanambienttemperature
rangeof25
°
c)(unlessotherwisenoted)
直流/dcstage
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
Minimuminputvoltagerangefor
R
L
=120
Ω
0.91.2
开始-向上
V
I
V
inputvoltagerange,afterstart-up0.96.5
V
O
tps61020outputvoltagerange1.85.5v
V
FB
TPS61020feedbackvoltage490500510mV
fOscillatorfrequency480600720kHz
I
SW
switchcurrentlimitvout=3.3v120015001800ma
开始-upcurrentlimit0.4xi
SW
毫安
swnswitchonresistancevout=3.3v260m
Ω
swpswitchonresistancevout=3.3v290m
Ω
totalaccuracy(includinglineand
-3%3%
loadregulation)
lineregulation0.6%
loadregulation0.6%
VBAT13µA
I
O
=0ma,v
EN
=vbat=1.2v,
Quiescentcurrent
vout=3.3v,t
一个
=25
°
C
VOUT2545µA
ShutdowncurrentV
EN
=0v,vbat=1.2v,t
一个
=25
°
c0.11µa
CONTROLSTAGE
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
V
UVLO
UndervoltagelockoutthresholdV
LBI
voltagedecreasing0.8v
V
IL
LBIvoltagethresholdV
LBI
voltagedecreasing490500510mV
LBIinputhysteresis10mV
lbiinputcurrenten=vbatorgnd0.010.1µa
V
OL
LBOoutputlowvoltageV
O
=3.3v,i
OI
=100µa0.040.4v
LBOoutputlowcurrent100µA
V
lkg
LBOoutputleakagecurrentV
LBO
=7v0.010.1µa
0.2
×
V
V
IL
en,psinputlowvoltage
VBAT
0.8
×
V
V
IH
en,psinputhighvoltage
VBAT
en,psinputcurrentclampedongndorvbat0.010.1µa
Overtemperatureprotection140
°
C
Overtemperaturehysteresis20
°
C
3
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