Datasheet

       
    
 
SLVS293D − NOVEMBER 2000 − REVISED MAY 2002
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
IN
EN
OUT
+
GND
C
o
ESR
R
L
V
I
To Load
Figure 18. Test Circuit for Typical Regions of Stability (Figures 19 and 20) (Fixed Output Options)
Figure 19
0.01
05
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
†
vs
OUTPUT CURRENT
10
I
O
− Output Current − A
ESR − Equivalent Series Resistance −Ω
1
0.1
Region of Stability
0.015
Region of Instability
C
o
= 680 µF
T
J
= 25°C
1234
Figure 20
0.01
05
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
†
vs
OUTPUT CURRENT
10
I
O
− Output Current − A
1
0.2
ESR − Equivalent Series Resistance −Ω
C
o
= 47 µF
T
J
= 25°C
Region of Stability
Region of Instability
1234
†
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
.