www.德州仪器.com
特性
描述
产品
V
I
地
EN
SW
FB
C1
4.7
µ
F
L1
10
µ
H
C2
10
µ
F
TPS62202
V
I
2.5 v − 6 v
V
O
1.8 v / 300 毫安
1
5
2
3
4
40
45
50
55
60
65
70
75
80
85
90
95
100
0.010 0.100 1
10 100 1000
效率 − %
效率
vs
加载 电流
I
L
−load 电流 − 毫安
V
O
= 1.8 v
V
I
= 2.7 v
V
I
= 3.7 v
V
I
= 5 v
tps62200,tps62201
tps62202,tps62203,tps62207
tps62204,tps62205,tps62208
SLVS417D–MARCH2002–REVISEDMAY2004
高-效率,sot23
步伐-向下,直流-dcconverter
•
highefficiencysynchronousstep-向下
thetps6220xdevicesareafamilyofhigh-效率
ConverterWithupto95%Efficiency
synchronousstep-downconvertersideallysuitedfor
•
2.5vto6.0vinputvoltagerange
portablesystemspoweredby1-cellli-ionor3-cell
•
adjustableoutputvoltagerangefrom0.7v
nimh/nicdbatteries.thedevicesarealsosuitableto
toV
I
operatefromastandard3.3-vor5-vvoltagerail.
•
FixedOutputVoltageOptionsAvailable
withanoutputvoltagerangeof6.0vdownto0.7v
•
Upto300mAOutputCurrent
andupto300maoutputcurrent,thedevicesare
idealtopowerlowvoltageDSPsandprocessors
•
1MHzFixedFrequencyPWMOperation
usedinpdas,pocketpcs,andsmartphones.下面
•
HighestEfficiencyOverWideLoadCurrent
nominalloadcurrent,thedevicesoperatewithafixed
RangeDuetoPowerSaveMode
switchingfrequencyoftypically1mhz.atlightload
•
15-µatypicalquiescentcurrent
电流,thepartentersthepowersavemode
运作;theswitchingfrequencyisreducedandthe
•
SoftStart
quiescentcurrentistypicallyonly15µa;thereforeit
•
100%dutycyclelow-dropoutoperation
achievesthehighestefficiencyovertheentireload
•
dynamicoutput-voltagepositioning
currentrange.thetps6220xneedsonlythreesmall
externalcomponents.togetherwiththetinysot23
•
availableinatiny5-pinsot23package
包装,aminimumsystemsolutionsizecanbe
达到.anadvancedfastresponsevoltagemode
controlschemeachievessuperiorlineandloadregu-
•
PDAsandPocketPC
lationwithsmallceramicinputandoutputcapacitors.
•
cellularphones,smartphones
•
LowPowerDSPSupply
•
DigitalCameras
•
PortableMediaPlayers
•
PortableEquipment
figure1.typicalapplication
(fixedoutputvoltageversion)
pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
productiondatainformationiscurrentasofpublicationdate.
copyright©2002–2004,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
necessarilyincludetestingofallparameters.
: 点此下载
