Datasheet

Time (µs)
4.0
3.5
2.5
0.5
0
3.0
1.0
1.5
2.0
V
OUT
(V)
4000 800 1200 1600 2000
V
OUT
= 2.5 V
R
L
= 1.6 Ω
C
NR
= 0.01 µF
V
IN
V
OUT
0
100
200
300
400
500
600
0 200 400 600 800 1000 1200 1400
V
DO
(mV)
I
OUT
(mA)
T
J
= 125°C
T
J
= −40°C
T
J
= 25°C
0
50
100
150
200
250
300
350
400
450
500
2.5 3.0 3.5 4.0 4.5 5.0
V
DO
(mV)
V
IN
(V)
T
J
= 125°C
T
J
= −40°C
T
J
= 25°C
I
OUT
= 1.5 A
C
OUT
= 10 µF
C
NR
= 0.01 µF
ESR − Equivalent Series Resistance (Ω)
I
OUT
(mA)
Region of
Instability
100
10
1
0.1
0.01
C
OUT
= 1 µF
Region of Stability
1 500 1000 150030 125
ESR − Equivalent Series Resistance (Ω)
I
OUT
(mA)
Region of
Instability
100
10
1
0.1
0.01
C
OUT
= 2.2 µF
Region of Stability
1 500 1000 150030 125
2.0
2.5
3.0
3.5
4.0
4.5
5.0
1.5 2.0 2.5 3.0 3.5 4.0
MinimumV
IN
(V)
V
OUT
(V)
T
J
=+125°C
I
OUT
=1.5A
T
J
=+25°C
TPS786xx
SLVS389L –SEPTEMBER 2002–REVISED OCTOBER 2010 www.ti.com
TYPICAL CHARACTERISTICS (continued)
TPS78630 TPS78601
TPS78625
DROPOUT VOLTAGE DROPOUT VOLTAGE
POWER-UP/
vs vs
POWER-DOWN OUTPUT CURRENT INPUT VOLTAGE
Figure 16. Figure 17. Figure 18.
TPS78630 TPS78630
TYPICAL REGIONS OF STABILITY TYPICAL REGIONS OF STABILITY
MINIMUM REQUIRED
EQUIVALENT SERIES RESISTANCE EQUIVALENT SERIES RESISTANCE
INPUT VOLTAGE
(ESR) (ESR)
vs
vs vs
OUTPUT VOLTAGE OUTPUT CURRENT OUTPUT CURRENT
Figure 19. Figure 20. Figure 21.
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