Datasheet

EN
GND
ESR
ToLoad
R
V
IN
IN
OUT
C
OUT
+
R
L
0.1
0
10
1
Region of Stability
Region of Instability
0.01
Region of Instability
I
OUT
- -OutputCurrent mA
100 200
300
400
500
ESR
EquivalentSeriesResistance- W-
V =3.3V
C =22 F
V =4.3V
T =+125 C
OUT
J
OUT
IN
m
°
10
Region of Stability
Region of Instability
Region of Instability
V =3.3V
C =22 F
V =4.3V
T =+25 C
OUT
A
OUT
IN
m
°
0.1
0
1
0.01
I
OUT
- -OutputCurrent mA
100 200
300
400
500
ESR
EquivalentSeriesResistance- W-
TPS775xx, TPS776xx
SLVS232J – SEPTEMBER 1999 – REVISED MARCH 2009 .............................................................................................................................................. www.ti.com
TYPICAL CHARACTERISTICS (continued)
Over operating temperature range (T
J
= – 40 ° C to +125 ° C) unless otherwise noted. Typical values are at T
J
= +25 ° C.
Test Circuit for Typical Regions of Stability (Figure 22 and Figure 23 ) (Fixed Output Options)
Figure 21.
TYPICAL REGION OF STABILITY TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
(1)
EQUIVALENT SERIES RESISTANCE
(1)
vs OUTPUT CURRENT vs OUTPUT CURRENT
(1) Equivalent series resistance (ESR) refers to (1) Equivalent series resistance (ESR) refers to
the total series resistance, including the ESR the total series resistance, including the ESR
of the capacitor, any series resistance added of the capacitor, any series resistance added
externally, and PWB trace resistance to C
OUT
. externally, and PWB trace resistance to C
OUT
.
Figure 22. Figure 23.
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