Datasheet

0.1
0.01
10
1
0 0.2
REGIONOF INSTABILITY
0.1 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
V
OUT1
=3.3V
C
o
50mW
=22 Fm
I OutputCurrent- - A
O
ESR EquivalentSeriesResistance- W-
0.1
0.01
10
1
0 0.2
REGION OFINSTABILITY
0.1 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
V
OUT1
=3.3V
C
o
15mW
=220 Fm
I OutputCurrent- - A
O
ESR EquivalentSeriesResistance- W-
0.1
0.01
10
1
0 0.20.1 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
REGION OFINSTABILITY
V
OUT2
=1.8V
C
o
15mW
=680 Fm
I OutputCurrent- - A
O
ESR EquivalentSeriesResistance- W-
0.1
0.01
10
1
0 0.2
REGION OFINSTABILITY
0.1 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
50mW
V
OUT2
=1.8V
C
o
=47 Fm
I OutputCurrent- - A
O
ESR EquivalentSeriesResistance- W-
TPS70345, TPS70348
TPS70351, TPS70358
TPS70302
www.ti.com SLVS285H –AUGUST 2000–REVISED APRIL 2010
TYPICAL CHARACTERISTICS (continued)
TYPICAL REGION OF STABILITY TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
(1)
EQUIVALENT SERIES RESISTANCE
(1)
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 29. Figure 30.
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.
(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
.
Copyright © 2000–2010, Texas Instruments Incorporated Submit Documentation Feedback 21