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electricalcharacteristics(持续)
TPS51124
SLVS616A–NOVEMBER2005–REVISEDNOVEMBER2005
overoperatingfree-airtemperaturerange,v5in=v5filt=5v(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
uvlo/logicthreshold
wakeup3.74.04.3v
V
UV5VFILT
V5FILTUVLOthreshold
hysteresis0.20.30.4v
wakeup1.01.31.5v
V
EN
ENxthreshold
hysteresis0.2v
I
EN
ENxinputcurrentAbsolutevalue
(1)
0.020.1
µ
一个
快
(1)
V5FILT
V
–0.3
V
TONSEL
TONSELthresholdMedium
(1)
V5FILT
2V
–1.0
慢
(1)
0.5v
tonsel=0v,currentoutofthepin
(1)
1
µ
一个
I
TONSEL
TONSELinputcurrent
tonsel=5v,currentintothepin
(1)
1
µ
一个
CURRENTSENSE
I
TRIP
tripsourcecurrentvtripx<0.3v,t
一个
=25
°
C91011
µ
一个
TC
ITRIP
I
TRIP
temperaturecoeffficentOnthebasisof25
°
C
(1)
4200ppm/
°
C
(v
tripx-地
–V
pgndx-llx
)电压,
V
OCLoff
OCPcompensationoffset–10010mV
V
tripx-地
=60mV
zerocrossdetectioncomparatorvpgndx-llxvoltage,pgoodx=hi
(1)
V
ZC
0.5mv
补偿
CurrentlimitthresholdsettingV
tripx-地
电压,alltemperatures
(1)
V
Rtrip
30200mV
范围
电源-goodcomparator
pginfromlower(pgoodxgoeshi)92.5%95%97.5%
pglowhysteresis(pgoodxgoeslow)–5%
V
THPG
PGthreshold
pginfromhigher(pgoodxgoeshi)102.5%105%107.5%
pghighhysteresis(pgoodxgoeslow)5%
I
PGMAX
pgsinkcurrentpgoodx=0.5v2.55.0ma
T
PGDEL
PGdelayDelayforPGin400510620
µ
s
OUTPUTUNDERVOLTAGEANDOVERVOLTAGEPROTECTION
V
OVP
OutputOVPtripthresholdOVPdetect110%115%120%
T
OVPDEL
outputovppropdelay1.5
µ
s
UVPdetect65%70%75%
V
UVP
OutputUVPtripthreshold
hysteresis(恢复<20
µ
s)10%
T
UVPDEL
OutputUVPdelay203240
µ
s
T
UVPEN
outputuvpenabledelayafter1.7
×
tss,uvpprotectionengaged1.422.4ms
THERMALSHUTDOWN
Shutdowntemperature
(1)
160
T
SDN
Thermalshutdownthreshold
°
C
Hysteresis
(1)
10
(1)ensuredbydesign.notproductiontested.
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