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ELECTRICALCHARACTERISTICS
TPS65020
SLVS607–SEPTEMBER2005
recommendedoperatingconditions(持续)
overoperatingfree-airtemperaturerange(unlessotherwisenoted)
MINNOMMAXUNIT
C
i(dcdc2)
InputCapacitoratV
i(dcdc2)
(2)
10
µ
F
C
o(dcdc2)
OutputCapacitoratVDCDC2
(2)
1022
µ
F
I
o(dcdc3)
OutputcurrentatL3800mA
InductoratL3
(2)
2.23.3
µ
H
C
i(dcdc3)
InputCapacitoratV
i(dcdc3)
(2)
10
µ
F
C
o(dcdc3)
OutputCapacitoratVDCDC3
(2)
1022
µ
F
C
i(vcc)
InputCapacitoratVCC
(2)
1
µ
F
C
i(vinldo)
InputCapacitoratVINLDO
(2)
1
µ
F
C
o(vldo1-2)
outputcapacitoratvldo1,vldo2
(2)
2.2
µ
F
I
o(vldo1-2)
outputcurrentatvldo1,vldo250ma
C
o(vrtc)
OutputCapacitoratVRTC
(2)
4.7
µ
F
T
一个
operatingambienttemperature-4085
°
C
T
J
operatingjunctiontemperature-40125
°
C
resistorfromvindcdc3,vindcdc2,vindcdc1tovccusedforfiltering
(3)
110
Ω
(3)upto3macanflowintovccwhenall3convertersarerunninginpwm.thisresistorcausestheuvlothresholdtobeshifted
accordingly.
vindcdc1=vindcdc2=vindcdc3=vcc=vinldo=3.6v,vbackup=3v,t
一个
=–40
°
Cto85
°
c,typicalvaluesare
atT
一个
=25
°
c(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
controlsignals:sclk,sdat(输入),dcdc1_en,dcdc2_en,dcdc3_en,ldo_en
V
IH
highlevelinputvoltagerpullup=4.7kr,pulledtovrtc1.3vccv
V
IL
lowlevelinputvoltagerpullup=4.7kr,pulledtovrtc00.4v
I
H
inputbiascurrent0.010.1
µ
一个
controlsignals:hot_重置
V
IH
highlevelinputvoltage1.3vccv
V
IL
lowlevelinputvoltage00.4v
pullupresistorat/hot_重置,connected1000k
Ω
toVCC
t
glitch
deglitchtimeathot_reset253035ms
controlsignals:lowbat,pwrfail,respwron,int,sdat(输出)
V
OH
Highleveloutputvoltage6V
V
OL
LowleveloutputvoltageI
IL
=5ma00.3v
DurationoflowpulseatRESPWRONExternalcapacitor1nF100ms
resetpwronthresholdvrtcfalling–3%2.43%v
resetpwronthresholdvrtcrising–3%2.523%v
3
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