TPS76815Q, TPS76818Q, TPS76825Q
TPS76827Q, TPS76828Q, TPS76830Q
TPS76833Q, TPS76850Q, TPS76801Q
SLVS211J 鈥?JUNE 1999 鈥?REVISED OCTOBER 2004
www.ti.com
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
.
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
OUTPUT CURRENT
10
ESR 鈭?Equivalent Series Resistance 鈭?鈩?/div>
ESR 鈭?Equivalent Series Resistance 鈭?/div>
鈩?/div>
Region of Instability
10
Region of Instability
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
OUTPUT CURRENT
1
V
O
= 3.3 V
C
o
= 4.7 碌F
V
I
= 4.3 V
T
A
= 25掳C
0.1
1
V
O
= 3.3 V
C
o
= 4.7
碌F
V
I
= 4.3 V
T
J
= 125掳C
0.1
Region of Stability
Region of Stability
Region of Instability
0.01
0
200
400
600
800
1000
I
O
鈭?Output Current 鈭?mA
0.01
0
200
Region of Instability
400
600
800
1000
I
O
鈭?Output Current 鈭?mA
Figure 22.
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
OUTPUT CURRENT
10
ESR 鈭?Equivalent Series Resistance 鈭?鈩?/div>
Region of Instability
ESR 鈭?Equivalent Series Resistance 鈭?/div>
鈩?/div>
10
Figure 23.
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
OUTPUT CURRENT
Region of Instability
1
V
O
= 3.3 V
C
o
= 22 碌F
V
I
= 4.3 V
T
A
= 25掳C
0.1
1
V
O
= 3.3 V
C
o
= 22
碌F
V
I
= 4.3 V
T
J
= 125掳C
0.1
Region of Stability
Region of Stability
Region of Instability
0.01
0
200
400
600
800
1000
I
O
鈭?Output Current 鈭?mA
Region of Instability
0.01
0
200
400
600
800
1000
I
O
鈭?Output Current 鈭?mA
Figure 24.
Figure 25.
14
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