TPS7415, TPS7418, TPS7425, TPS7430, TPS7433
FAST-TRANSIENT-RESPONSE USING SMALL OUTPUT CAPACITOR
200-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS212 – DECEMBER 1999
TYPICAL CHARACTERISTICS
To Load
IN
V
I
OUT
+
C
O
R
EN
L
GND
ESR
Figure 18. Test Circuit for Typical Regions of Stability (Figure 19)
TYPICAL REGIONS OF STABILITY
†
EQUIVALENT SERIES RESISTANCE (ESR)
vs
OUTPUT CURRENT
100
10
1
0.1
Region of Instability
0.01
0
50
100
150
200
I
O
– Output Current – mA
Figure 19
†
ESRreferstothetotalseriesresistance, includingtheESRofthecapacitor, anyseriesresistanceaddedexternally, andPWBtraceresistance
to C
.
O
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265