Datasheet

TPS76815-Q1, TPS76818-Q1, TPS76825-Q1, TPS76827-Q1
TPS76828-Q1, TPS76830-Q1 TPS76833-Q1, TPS76850-Q1, TPS76801-Q1
FAST-TRANSIENT-RESPONSE 1-A LOW-DROPOUT VOLTAGE REGULATORS
SGLS155A − FEBRUARY 2003 − REVISED SEPTEMBER 2008
14
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 22
0.1
0 200 400 600 800 1000
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
†
vs
OUTPUT CURRENT
10
I
O
− Output Current − mA
ESR − Equivalent Series Resistance − Ω
1
V
O
= 3.3 V
C
o
= 4.7 µF
V
I
= 4.3 V
T
A
= 25°C
Region of Stability
Region of Instability
Figure 23
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
†
vs
OUTPUT CURRENT
I
O
− Output Current − mA
ESR − Equivalent Series Resistance −
Ω
0.1
0 200 400 600 800 1000
10
1
V
O
= 3.3 V
C
o
= 4.7 µF
V
I
= 4.3 V
T
J
= 125°C
Region of Stability
Region of Instability
Figure 24
0.1
0 200 400 600 800 1000
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
†
vs
OUTPUT CURRENT
10
I
O
− Output Current − mA
ESR − Equivalent Series Resistance − Ω
1
Region of Instability
Region of Stability
V
O
= 3.3 V
C
o
= 22 µF
V
I
= 4.3 V
T
A
= 25°C
ESR − Equivalent Series Resistance − Ω
Figure 25
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
†
vs
OUTPUT CURRENT
0.1
0 200 400 600 800 1000
10
1
I
O
− Output Current − mA
V
O
= 3.3 V
C
o
= 22 µF
V
I
= 4.3 V
T
J
= 125°C
Region of Stability
Region of Instability
†
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
.