Datasheet

TPS79015, TPS79018, TPS79025, TPS79028, TPS79030
ULTRALOW-POWER LOW-NOISE 50-mA
LOW-DROPOUT LINEAR REGULATORS
SLVS299B – SEPTEMBER 2000 – REVISED MAY 2001
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 24
1
02550
100
I
O
– Output Current – mA
ESR – Equivalent Series Resistance – Ω
10
TPS79030
TYPICAL REGIONS OF STABILITY
EQUIVALENT SERIES RESISTANCE (ESR)
vs
OUTPUT CURRENT
5 1015 20 30354045
Region of Stability
0.1
V
I
= 4 V
C
o
= 4.7 µF
V
O
= 3 V
Region of Instability
Figure 25
I
O
– Output Current – mA
1
02550
100
ESR – Equivalent Series Resistance – Ω
10
TPS79030
TYPICAL REGIONS OF STABILITY
EQUIVALENT SERIES RESISTANCE (ESR)
vs
OUTPUT CURRENT
V
I
= 4 V
C
o
= 10 µF
V
O
= 3 V
5 1015 20 30354045
Region of Stability
Region of Instability