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V
o(3.3vout)
V
o(1.5vout)
V
i(1.5vin)
t − time − 500
s/div
V
o(auxvout)
R
l(3.3vout)
= 3.6
R
l(1.5vout)
= 2.7
R
l(auxout)
= 12
C
l(3.3v/1.5v/auxout)
= 68
F
2v/div
2 v/div
2 v/div
2 v/div
V
o(oc)
2 v/div
I
o(3.3vout)
0.5 一个/div
t − time − 5 ms/div
0
20
40
60
80
100
120
140
160
180
−40 −20 0 20 40 60 80 100 120
3.3v_aux
1.5vin
3.3vin
on−state 阻抗 −
T
J
− 接合面 temperature −
C
Ω
r
ds(在)
− 静态的 流-源
m
0
50
100
150
200
250
−40 −20 0 20 40 60 80 100 120
auxin + cpxx+ shdn+ rclken
auxin + cpxx
AUXIN
CC
I 供应 电流 − − 一个
µ
T
J
− 接合面 temperature −
C
TPS2231
TPS2236
SLVS536B–JULY2004–REVISEDJANUARY2005
OCRESPONSEWHENPOWEREDINTOASHORT
outputvoltagewhen1.5vinisremoved(3.3vout)
vsvs
TIMETIME
figure8.figure9.
supplycurrentofauxinstaticdrain-sourceon-stateresistance
vsvs
JUNCTIONTEMPERATUREJUNCTIONTEMPERATURE
figure10.figure11.
16