Datasheet

TPS7101Q, TPS7133Q, TPS7148Q, TPS7150Q
TPS7101Y, TPS7133Y, TPS7148Y, TPS7150Y
LOW-DROPOUT VOLTAGE REGULATORS
SLVS092G – NOVEMBER 1994 – REVISED JANUARY 2003
24
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 38
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
V
I
= V
O(nom)
+ 1 V
No Input Capacitance
C
O
= 10 µF
No Ceramic Capacitance
T
A
= 25°C
Compensation Series Resistance – ΩCSR –
0.2
Figure 39
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
V
I
= V
O(nom)
+ 1 V
No Input Capacitance
C
O
= 10 µF + 0.5 µF of
Added Ceramic Capacitance
T
A
= 25°C
Compensation Series Resistance – ΩCSR –
0.2
Figure 40
1
0.1
0 0.1 0.2 0.3 0.4 0.5 0.6
TYPICAL REGIONS OF STABILITY
†
COMPENSATION SERIES RESISTANCE
vs
ADDED CERAMIC CAPACITANCE
0.7 0.8 0.9 1
10
100
Ceramic Capacitance – µF
Region of Instability
V
I
= V
O(nom)
+ 1 V
No Input Capacitance
C
O
= 10 µF
I
O
= 100 mA
T
A
= 25°C
Compensation Series Resistance – ΩCSR –
0.2
Figure 41
1
0.1
0 0.1 0.2 0.3 0.4 0.5 0.6
TYPICAL REGIONS OF STABILITY
†
COMPENSATION SERIES RESISTANCE
vs
ADDED CERAMIC CAPACITANCE
0.7 0.8 0.9 1
10
100
Ceramic Capacitance – µF
Region of Instability
V
I
= V
O(nom)
+ 1 V
No Input Capacitance
C
O
= 10 µF
I
O
= 500 mA
T
A
= 25°C
Compensation Series Resistance – ΩCSR –
0.2
†CSR values below 0.1 Ω are not recommended.