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SWITCHINGCHARACTERISTICS
TPS2231
TPS2236
SLVS536B–JULY2004–REVISEDJANUARY2005
electricalcharacteristics(持续)
T
J
=25
°
c,v
i(3.3vin)
=V
i(auxin)
=3.3v,v
i(1.5vin)
=1.5v,v
i(/shdnx)
,v
i(/stbyx)
=3.3v,v
i(/cppex)
=V
i(/cpusbx)
=0v,
V
i(/sysrst)
=3.3v,ocxandrclkenxandperstxareopen,allvoltageoutputsunloaded(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
3.3vout,auxout,or1.5vout
t
w(perst)
PERSTminimumpulsewidthfallingoutoftoleranceortriggeredby100250µs
SYSRST
perstoutputlowvoltage0.4v
I
o(perst)
=500µA
perstoutputhighvoltage2.4v
OCoutputlowvoltageI
o(/oc)
=2ma0.4v
OCleakagecurrentV
o(/oc)
=3.6v1µa
Fallingintooroutofanovercurrent
OCdeglitch620mS
情况
undervoltagelockout(uvlo)
3.3vinlevel,belowwhich3.3vin
3.3vinuvlo2.62.9
and1.5vinswitchesareoff
1.5vinlevel,belowwhich3.3vin
1.5vinuvlo11.25v
and1.5vinswitchesareoff
auxinlevel,belowwhichall
auxinuvlo2.62.9
switchesareoff
UVLOhysteresis100mV
T
J
=25
°
c,v
i(3.3vin)
=V
i(auxin)
=3.3v,v
i(1.5vin)
=1.5v,v
i(/shdnx)
,v
i(/stbyx)
=3.3v,v
i(/cppex)
=V
i(/cpusbx)
=0v,
V
i(/sysrst)
=3.3v,ocxandrclkenxandperstxareopen,allvoltageoutputsunloaded(unlessotherwisenoted)
PARAMETERTESTCONDITIONSMINTYPMAXUNIT
3.3vinto3.3voutc
l(3.3vout)
=0.1µf,i
o(3.3vout)
=0a0.13
AUXINtoAUXOUTC
l(auxout)
=0.1µf,i
o(auxout)
=0a0.13
1.5vinto1.5voutc
l(1.5vout)
=0.1µf,i
o(1.5vout)
=0a0.13
t
r
Outputrisetimesms
3.3vinto3.3voutc
l(3.3vout)
=100µf,r
L
=V
i(3.3vin)
/1a0.16
AUXINtoAUXOUTC
l(auxout)
=100µf,r
L
=V
i(auxin)
/0.250a0.16
1.5vinto1.5voutc
l(1.5vout)
=100µf,r
L
=V
i(1.5vin)
/0.500a0.16
3.3vinto3.3voutc
l(3.3vout)
=0.1µf,i
o(3.3vout)
=0A10150
AUXINtoVAUXOUTC
l(auxout)
=0.1µf,i
o(auxout)
=0A10150µs
Outputfalltimes
1.5vinto1.5voutc
l(1.5vout)
=0.1µf,i
o(1.5vout)
=0A10150
whencardremoved
t
f
(bothcpusband
3.3vinto3.3voutc
l(3.3vout)
=20µf,i
o(3.3vout)
=0A230
cppede-asserted)
AUXINtoVAUXOUTC
l(auxout)
=20µf,i
o(auxout)
=0A230ms
1.5vinto1.5voutc
l(1.5vout)
=20µf,i
o(1.5vout)
=0A230
3.3vinto3.3voutc
l(3.3vout)
=0.1µf,i
o(3.3vout)
=0A10150
AUXINtoVAUXOUTC
l(auxout)
=0.1µf,i
o(auxout)
=0A10150µs
Outputfalltimes
1.5vinto1.5voutc
l(1.5vout)
=0.1µf,i
o(1.5vout)
=0A10150
whenSHDN
t
f
asserted(cardis
3.3vinto3.3voutc
l(3.3vout)
=100µf,r
L
=V
i(3.3vin)
/1a0.15
呈现)
AUXINtoVAUXOUTC
l(auxout)
=100µFR
L
=V
i(auxin)
/0.250a0.15ms
1.5vinto1.5voutc
l(1.5vout)
=100µf,r
L
=V
i(1.5vin)
/0.500a0.15
3.3vinto3.3voutc
l(3.3vout)
=0.1µf,i
o(3.3vout)
=0a0.11
AUXINtoVAUXOUTC
l(auxout)
=0.1µf,i
o(auxout)
=0a0.050.5
1.5vinto1.5voutc
l(1.5vout)
=0.1µf,i
o(1.5vout)
=0a0.11
转变-onpropagation
t
pd(在)
ms
延迟
3.3vinto3.3voutc
l(3.3vout)
=100µf,r
L
=V
i(3.3vin)
/1a0.11.5
AUXINtoVAUXOUTC
l(auxout)
=100µf,r
L
=V
i(auxin)
/0.250a0.051
1.5vinto1.5voutc
l(1.5vout)
=100µf,r
L
=V
i(1.5vin)
/0.500a0.11.5
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