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AdjustingtheOutputVoltageofthePTV12010xSeries
R
设置
10 k
0.8 V
V
输出
V
最小值
R
s
k
(1)
PTV12010L
PTV12010W
SLTS234–DECEMBER2004
applicationinformation(持续)
table1.输入/outputcapacitors(持续)
CapacitorCharacteristicsQuantity
最大值.irms
capacitorvendor,
Vendor
WorkingMaxESRRipplePhysicalOptional
类型/序列
ValueInput
PartNumber
Voltageat100kHzCurrentSizeOutput
(样式)
(µf)总线
(v)(
Ω
)at85
°
c(mm)总线
(毫安)
594d,tantalum(smd)101500.0901100n/r
(2)
≤
5594D157X0010C2T
7.3l
×
6W
×
4.1h
25680.09516002
≤
5594D686X0025R2T
94sp,organic(放射状的)161000.075289010
×
10.51
≤
294SP107X0016FBP
kemet,ceramicx5r(smd)16100.002—
≥
1
(3)
≤
5C1210C106M4PAC
6.3470.0023225mmn/r
(2)
≤
5C1210C476K9PAC
murata,ceramicx5r(smd)6.3100n/r
(2)
≤
3GRM32ER60J107M
6.347n/r
(2)
≤
5GRM32ER60J476M
0.002—3225mm
1622
≥
1
(3)
≤
5GRM32ER61C226K
1610
≥
1
(3)
≤
5GRM32DR61C106K
tdk,ceramicx5r(smd)6.3100n/r
(2)
≤
3C3225X5R0J107MT
6.347n/r
(2)
≤
5C3225X5R0J476MT
0.002—3225mm
1622
≥
1
(3)
≤
5C3225X5R1C226MT
1610
≥
1
(3)
≤
5C3225X5R1C106MT
(3)ceramiccapacitorsarerequiredtocomplementelectrolytictypesattheinputandtoreducehigh-frequencyripplecurrent.
TheV
O
adjustcontrol(pin8)setstheoutputvoltageoftheptv12010product.theadjustmentrangeisfrom
1.2vto5.5vforthew-suffixmodulesand0.8vto1.8vforl-suffixmodules.theadjustmentmethodrequires
theadditionofasingleexternalresistor,r
设置
,thatmustbeconnecteddirectlybetweenthev
O
AdjustandGND
(pin1or2).table2givesthepreferredvalueoftheexternalresistorforanumberofstandardvoltages,along
withtheactualoutputvoltagethatthisresistancevalueprovides.figure11showstheplacementoftherequired
电阻.
table2.standardvaluesofr
设置
forCommonOutputVoltages
PTV12010WPTV12010L
V
O
R
设置
V
O
R
设置
V
O
(必需的)(standardvalue)(真实的)(standardvalue)(actual)
5V280
Ω
5.009vn/一个/一个
3.3v2.0k
Ω
3.294vn/一个/一个
2.5v4.32k
Ω
2.503vn/一个/一个
2v8.06k
Ω
2.010vn/一个/一个
1.8v11.5k
Ω
1.801v130
Ω
1.800v
1.5v24.3k
Ω
1.506v3.57k
Ω
1.499v
1.2vopen1.200v12.1k
Ω
1.201v
1.1vn/一个/a18.7k
Ω
1.101v
1.0vn/一个/a32.4k
Ω
0.999v
0.9vn/一个/a71.5k
Ω
0.901v
0.8vn/一个/aopen0.800v
forotheroutputvoltages,thevalueoftherequiredresistorcaneitherbecalculatedorsimplyselectedfromthe
rangeofvaluesgivenintable4.equation1maybeusedforcalculatingtheadjustresistorvalue.selectthe
appropriatevaluefortheparameters,r
s
andV
最小值
,fromtable3.
10
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