Datasheet

TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
23
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 34
1
0.1
0 50 100 150 200 250 300
TYPICAL REGIONS OF STABILITY
COMPENSATION SERIES RESISTANCE
vs
OUTPUT CURRENT
350 400 450 500
10
100
I
O
– Output Current – mA
Region of Instability
Region of Instability
V
I
= V
O(nom)
+ 1 V
No Input Capacitance
C
O
= 4.7 µF
No Added Ceramic Capacitance
T
A
= 25°C
Compensation Series Resistance – Ω
CSR –
Figure 35
1
0.1
0 50 100 150 200 250 300 350 400 450 500
10
100
I
O
– Output Current – mA
Region of Instability
Region of Instability
V
I
= V
O(nom)
+ 1 V
No Input Capacitance
C
O
= 4.7 µF + 0.5 µF of
Ceramic Capacitance
T
A
= 25°C
TYPICAL REGIONS OF STABILITY
COMPENSATION SERIES RESISTANCE
vs
OUTPUT CURRENT
Compensation Series Resistance – ΩCSR –
Figure 36
1
0.1
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
10
100
Ceramic Capacitance – µF
Region of Instability
Region of Instability
TYPICAL REGIONS OF STABILITY
COMPENSATION SERIES RESISTANCE
vs
ADDED CERAMIC CAPACITANCE
V
I
= V
O(nom)
+ 1 V
No Input Capacitance
I
O
= 100 mA
C
O
= 4.7 µF
T
A
= 25°C
Compensation Series Resistance – ΩCSR –
Figure 37
1
0.1
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
10
100
Ceramic Capacitance – µF
Region of Instability
Region of Instability
TYPICAL REGIONS OF STABILITY
COMPENSATION SERIES RESISTANCE
vs
ADDED CERAMIC CAPACITANCE
V
I
= V
O(nom)
+ 1 V
No Input Capacitance
I
O
= 500 mA
C
O
= 4.7 µF
T
A
= 25°C
Compensation Series Resistance – ΩCSR –