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ELECTRICALCHARACTERISTICS
TPS54610
SLVS398E–JUNE2001–REVISEDFEBRUARY2005
dissipationratings(持续)
THERMALIMPEDANCET
一个
=25°CT
一个
=70°CT
一个
=85°C
包装
接合面-至-ambientpowerratingpowerratingpowerrating
28pinpwpwithoutsolder40.5°c/w2.48w1.36w0.99w
overoperatingfree-airtemperaturerangeunlessotherwisenoted
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
supplyvoltage,vin
inputvoltagerange,vin36v
f
s
=350khz,同步
≤
0.8v,rtopen,
1115.8
PHpinopen
I
(q)
Quiescentcurrentf
s
=550khz,同步
≥
2.5v,rtopen,毫安
1623.5
PHpinopen
关闭,ss/ena=0v11.4
UNDERVOLTAGELOCKOUT
startthresholdvoltage,uvlo2.953.0v
stopthresholdvoltage,uvlo2.702.80v
hysteresisvoltage,uvlo0.140.16v
risingandfallingedgedeglitch,uvlo
(1)
2.5µs
BIASVOLTAGE
outputvoltage,vbiasi
(vbias)
=02.702.802.90v
outputcurrent,vbias
(2)
100µA
CUMULATIVEREFERENCE
V
ref
accuracy0.8820.8910.900v
规章制度
I
L
=3a,f
s
=350khz,t
J
=85°c0.04
Lineregulation
(2)(3)
%/v
I
L
=3a,f
s
=550khz,t
J
=85°c0.04
I
L
=0ato6a,f
s
=350khz,t
J
=85°c0.03
Loadregulation
(1)(3)
%/一个
I
L
=0ato6a,f
s
=550khz,t
J
=85°c0.03
振荡器
同步
≤
0.8v,rtopen280350420
Internallyset—freerunningfrequencykHz
同步
≥
2.5v,rtopen440550660
RT=180k
Ω
(1%resistortoagnd)
(1)
252280308
Externallyset—freerunningfrequencyrangeRT=100k
Ω
(1%resistortoagnd)460500540khz
RT=68k
Ω
(1%resistortoagnd)
(1)
663700762
highlevelthreshold,sync2.5v
lowlevelthreshold,sync0.8v
pulseduration,externalsynchronization,
50ns
同步
(1)
frequencyrange,同步
(1)
330700kHz
Rampvalley
(1)
0.75v
rampamplitude(顶峰-至-顶峰)
(1)
1V
Minimumcontrollableontime
(1)
200ns
Maximumdutycycle90%
ERRORAMPLIFIER
Erroramplifieropenloopvoltagegain1k
Ω
COMPtoAGND
(1)
90110dB
ErroramplifierunitygainbandwidthParallel10k
Ω
,160pfcomptoagnd
(1)
35MHz
(1)specifiedbydesign
(2)staticresistiveloadsonly
(3)specifiedbythecircuitusedinfigure10
3
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