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REGIONOFINSTABILITY
0.1
10
1
250mW
V
O
=3.3V
C
O
=6.8 F
T
J
=25 C
REGIONOFINSTABILITY
V
O
=3.3V
C =6.8 F
O
m
T =25 C
J
°
0 50 100 150 200 250
I OutputCurrent- -
O
mA
ESR EquivalentSeriesResistance
- W-
0.1
0.01
10
1
V
O
=3.3V
REGIONOFINSTABILITY
REGIONOFINSTABILITY
C =10 Fm
O
T =25 C°
J
0 50 100 150 200 250
I OutputCurrent- -
O
mA
ESR EquivalentSeriesResistance - W-
50mW
REGIONOFINSTABILITY
0.1
1
V
O
=1.8V
C =6.8 F
O
m
T =25 C
J
°
10
REGIONOFINSTABILITY
250mW
0 25 50 75 100 125
I mA
O
OutputCurrent- -
ESR - - WEquivalentSeriesResistance
0.1
0.01
10
1
REGIONOFINSTABILITY
50mW
REGIONOFINSTABILITY
V
O
=1.8V
V
O
=1.8V
C =10 F
O
m
T =25 C
J
°
0 25 50 75 100 125
I - -
O
OutputCurrent mA
ESR EquivalentSeriesResistance - W-
TPS70745, TPS70748
TPS70751, TPS70758
TPS70702
SLVS291D – MAY 2000 – REVISED DECEMBER 2007
TYPICAL REGION OF STABILITY TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
(1)
EQUIVALENT SERIES RESISTANCE
(1)
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 31. Figure 32.
TYPICAL REGION OF STABILITY TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
(1)
EQUIVALENT SERIES RESISTANCE
(1)
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 33. Figure 34.
(1)
Equivalent series resistance (ESR) refers to the total series resistance, including the ESR of the capacitor, any
series resistance added externally, and PWB trace resistance to C
O
.
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