www.德州仪器.com
ELECTRICALCHARACTERISTICS
TPS65020
SLVS607–SEPTEMBER2005
vindcdc1=vindcdc2=vindcdc3=vcc=vinldo=3.6v,vbackup=3v,t
一个
=–40
°
Cto85
°
c,typicalvaluesare
atT
一个
=25
°
c(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
vdcdc1step-downconverter
V
I
inputvoltagerange,vindcdc12.56.0v
I
O
Maximumoutputcurrent1200mA
I
(sd)
shutdownsupplycurrentinvindcdc1dcdc1_en=gnd0.11
µ
一个
r
ds(在)
p-channelmosfeton-resistancevindcdc1=v
(gs)
=3.6v125261m
Ω
I
lkg
p-channelleakagecurrentvindcdc1=6v2
µ
一个
r
ds(在)
n-channelmosfeton-resistancevindcdc1=v
(gs)
=3.6v130260m
Ω
I
lkg
n-channelleakagecurrentv
(ds)
=6V710
µ
一个
forwardcurrentlimit(p-andn-频道)2.5v<v
i(主要的)
<6v1.551.751.95a
f
S
oscillatorfrequency1.31.51.7mhz
vindcdc1=3.3vto6v;
3V–2%2%
0mA
≤
I
O
≤
1.2a
Fixedoutputvoltage
FPWMDCDC1=0
vindcdc1=3.6vto6v;
3.3v–2%2%
0mA
≤
I
O
≤
1.2a
vindcdc1=3.3vto6v;
3V–1%1%
0mA
≤
I
O
≤
1.2a
Fixedoutputvoltage
FPWMDCDC1=1
vindcdc1=3.6vto6v;
3.3v–1%1%
0mA
≤
I
O
≤
1.2a
adjustableoutputvoltagewithresistordiv-vindcdc1=vdcdc1+0.3v(min2.5v)
–2%2%
ideratdefdcdc1fpwmdcdc1=0to6v;0ma
≤
I
O
≤
1.2a
adjustableoutputvoltagewithresistordiv-vindcdc1=vdcdc1+0.3v(min2.5v)
–1%1%
ideratdefdcdc1;fpwmdcdc1=1to6v;0ma
≤
I
O
≤
1.2a
vindcdc1=vdcdc1+0.3v(最小值.2.5v)
lineregulation0%/v
to6v;i
O
=10mA
LoadRegulationI
O
=10mato1200ma0.25%/一个
VDCDC1rampingfrom5%to95%oftarget
Softstartramptime750
µ
s
值
InternalresistancefromL1toGND1M
Ω
VDCDC1dischargeresistance300
Ω
6
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