www.德州仪器.com
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
I
i(auxin)
200320
Normaloperation
I
i(3.3vin)
17.525µa
ofTPS2236
outputsareunloaded,t
J
[–40,
I
i(1.5vin)
5.515
120
°
c](includecppexandcpusbx
I
i(auxin)
120210
logicpullupcurrents)
Normaloperation
I
i(3.3vin)
1015µA
ofTPS2231
I
i(1.5vin)
2.510
Totalinput
I
I
quiescentcurrent
I
i(auxin)
250440
Shutdownmodeof
I
i(3.3vin)
3.520µa
CPUSB=CPPE=0VSHDN=0V
TPS2236
(dischargefetsareon)(包含
I
i(1.5vin)
0.120
CPPExandCPUSBxlogicpullup
I
i(auxin)
144270
currentsandshdnpullupcurrent)t
J
Shutdownmodeof
[–40,120
°
C]
I
i(3.3vin)
3.510µa
TPS2231
I
i(1.5vin)
0.510
I
i(auxin)
40100
shdn=3.3v,
TPS2236I
i(3.3vin)
0.1100µa
cpusb=cppe=3.3v(nocard
I
i(1.5vin)
0.1100
forwardleakagepresent,dischargefetsareon);
I
lkg(fwd)
currentcurrentmeasuredatinputpins
I
i(auxin)
2050
T
J
=120
°
c,includesrclken
TPS2231I
i(3.3vin)
0.150µa
pullupcurrent
I
i(1.5vin)
0.150
T
J
=25
°
c0.110
I
i(auxout)
µA
T
J
=120
°
C50
V
o(auxout)
=V
o(3.3vout)
=3.3v;
Reverseleakage
T
J
=25
°
c0.110
V
o(1.5vout)
=1.5v;allvoltageinputs
I
lkg(rvs)
电流(tps2236i
i(3.3vout)
µA
aregrounded(currentmeasured
T
J
=120
°
C50
andtps2231)
fromoutputpinsgoingin)
T
J
=25
°
c0.110
I
i(1.5vout)
µA
T
J
=120
°
C50
logicsection(sysrst,shdnx,stbyx,perstx,rclkenx,ocx,cpusbx,cppex)
sysrst=3.6v,sinking01
I
(/sysrst)
InputµA
sysrst=0v,sourcing1030
shdnx=3.6v,sinking01
I
(/shdnx)
InputµA
shdnx=0v,sourcing1030
Logicinput
stbyx=3.6v,sinking01
supplycurrent
I
(/stbyx)
InputµA
stbyx=0v,sourcing1030
I
(rclkenx)
inputrclkenx=0v,sourcing1030µa
cpusborcppe=0v,sinking01
I
(/cpusbx)
或者
InputsµA
I
(/cppex)
cpusborcppe=3.6v,sourcing1030
Highlevel2
Logicinput
V
电压
lowlevel0.8
RCLENoutputlowvoltageOutputI
o(rclken)
=60µa0.4v
3.3voutfalling2.73
perstassertionthresholdofoutputvoltage(perst
assertedwhenanyoutputvoltagefallsbelowtheauxoutfalling2.73v
门槛)
1.5voutfalling1.21.35
3.3vout,auxout,or1.5vout
PERSTassertiondelayfromoutputvoltage500ns
下落
3.3vout,auxout,and1.5vout
perstde-assertiondelayfromoutputvoltage41020ms
risingwithintolerance
MaxtimefromSYSRSTassertedor
PERSTassertiondelayfromSYSRST500ns
de-asserted
4
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