Datasheet

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10
1
0.1
0.01
0 100 200 300 400 500
I
O
−Output Current −mA
ESR −Equivalent Series Resistance −
Ω
50 m
Ω
REGION OF INSTABILITY
REGION OF INSTABILITY
V
O
= 1.8 V
C
O
= 33 F
T
J
= 25C
10
1
0.1
0.01
0 100 200 300 400 500
I
O
−Output Current −mA
ESR −Equivalent Series Resistance −
Ω
50 m
Ω
REGION OF INSTABILITY
REGION OF INSTABILITY
V
O
= 1.8 V
C
O
= 33 F + 1 F
T
J
= 25C
10
1
0.1
0.01
0 100 200 300 400 500
I
O
−Output Current −mA
ESR −Equivalent Series Resistance −
Ω
REGION OF INSTABILITY
REGION OF INSTABILITY
50m
V
O
= 1.8 V
C
O
= 10 F
T
J
= 25C
10
1
0.1
0.01
0 100 200 300 400 500
I
O
−Output Current −mA
ESR −Equivalent Series Resistance −
Ω
50 m
Ω
REGION OF INSTABILITY
REGION OF INSTABILITY
V
O
= 1.8 V
C
O
= 10 F + 1 F
T
J
= 25C
IN
EN
OUT
GND
C
O
ESR
R
L
V
I
To Load
TPS70145, TPS70148
TPS70151, TPS70158
TPS70102
SLVS222D – DECEMBER 1999 – REVISED NOVEMBER 2004
TYPICAL REGION OF STABILITY TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE EQUIVALENT SERIES RESISTANCE
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 35. Figure 36.
TYPICAL REGION OF STABILITY TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE EQUIVALENT SERIES RESISTANCE
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 37. Figure 38.
Figure 39. Test Circuit for Typical Regions of Stability
20