www.德州仪器.com
ELECTRICALCHARACTERISTICS
PTV12010L
PTV12010W
SLTS234–DECEMBER2004
operatingat25
°
cfree-airtemperature,v
I
=12v,v
O
=3.3v,c1=100µf,c2=10µf,c3=0µf,andi
O
=I
O
最大值(除非
otherwisenoted)
PTV12010W
PARAMETERTESTCONDITIONSUNIT
MINTYPMAX
I
O
OutputcurrentNaturalconvectionairflow08
(1)
一个
V
I
InputvoltagerangeOverI
O
loadrange10.813.2v
设置-pointvoltagetolerance
±
2%
(2)
Temperaturevariation–40
°
c<t
一个
<85
°
C
±
0.5%
LineregulationOverV
I
范围
±
10mV
V
O
LoadregulationOverI
O
范围
±
12mV
totaloutputvariationincludesset-要点,线条,加载,–40
°
C
≤
T
一个
≤
85
°
C
±
3
(2)
%V
o
AdjustrangeOverV
I
range1.25.5v
R
设置
=280
Ω
,v
O
=5V92%
R
设置
=2.0k
Ω
,v
O
=3.3v90%
R
设置
=4.32k
Ω
,v
O
=2.5v88%
η
EfficiencyI
O
=I
O
最大值
R
设置
=11.5k
Ω
,v
O
=1.8v85%
R
设置
=24.3k
Ω
,v
O
=1.5v83%
R
设置
=opencct.,v
O
=1.2v80%
Outputvoltageripple
20-mhzbandwidth20mv
PP
(顶峰-至-顶峰)
I
O
(trip)overcurrentthresholdreset,followedbyauto-recovery16a
1-一个/µsloadstep,50to100%i
O
最大值,c3=100µf
TransientresponseRecoverytime70µs
V
o
在/undershoot100mv
I
IL
inputlowcurrentpintognd–0.13ma
trackcontrol(pin5)
controlslew-ratelimitc3
≤
c3(最大值)1v/ms
V
I
increasing9.510.4
UVLOUndervoltagelockoutV
V
I
decreasing8.89
V
IH
Inputhighvoltage2Open
(3)
ReferencedtoGNDV
inhibitcontrol(pin7)v
IL
inputlowvoltage–0.20.6
I
IL
inputlowcurrentpintognd–0.24ma
I
I
(stby)inputstandbycurrentinhibit(pin7)tognd,追踪(pin5)open10ma
ƒ
S
SwitchingfrequencyOverV
I
andI
O
ranges250325400kHz
nonceramic(c1)100
(4)
ExternalinputcapacitanceµF
陶瓷的(c2)10
(4)
Nonceramic0100
(5)
3,300
(6)
CapacitancevalueµF
externaloutputcapacitance(c3)ceramic0300
equivalentseriesresistance(nonceramic)4
(7)
m
Ω
pertelcordiasr-332,50%stress,t
一个
=40
°
c,地面
MTBFReliability510
6
Hrs
benign
(1)seethermalderatingcurvesforsafeoperatingarea(soa),orconsultfactoryforappropriatederating.
(2)theset-pointvoltagetoleranceisaffectedbythetoleranceandstabilityofr
设置
.thestatedlimitisunconditionallymetifr
设置
hasa
toleranceof1%,with100ppm/
°
corbettertemperaturestability.
(3)thiscontrolpinispulleduptoaninternalsupplyvoltage.toavoidriskofdamagetothemodule,
donot
applyanexternalvoltage
greaterthan7v.ifthisinputisleftopen-电路,themoduleoperateswheninputpowerisapplied.asmalllow-泄漏(<100na)
mosfetisrecommendedforcontrol.forfurtherinformation,consulttherelatedapplicationnote.
(4)a10-µfhigh-frequencyceramiccapacitorand100-µfelectrolyticinputcapacitorarerequiredforproperoperation.theelectrolytic
capacitormustberatedfortheminimumripplecurrentrating.seetheapplicationinformationforfurtherguidanceoninputcapacitor
选择.
(5)anexternaloutputcapacitorisnotrequiredforbasicoperation.adding100µfofdistributedcapacitanceattheloadimprovesthe
transientresponse.
(6)thisisthecalculatedmaximum.theminimumesrlimitationoftenresultsinalowervalue.seetheapplicationinformationforfurther
guidance.
(7)thisisthetypicalesrforalltheelectrolytic(nonceramic)outputcapacitance.use7m
Ω
astheminimumwhenusingmax-esrvalues
tocalculate.
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