Datasheet

0
10
20
30
40
50
60
70
80
RMS Output Noise (µV
RMS
)
C
NR
(µF)
I
OUT
= 1.5 A
C
OUT
= 10 µF
BW = 100 Hz to 100 kHz
0.001 µF 0.01 µF 0.1 µF0.0047 µF
0
10
20
30
40
50
60
70
80
f (Hz)
1 10k 10M1k
Ripple Rejection − (dB)
I
OUT
= 1 mA
I
OUT
= 1.5 A
V
IN
= 4 V
C
OUT
= 10 µF
C
NR
= 0.01 µF
10 100 100k 1M
0
100
200
300
400
500
600
−40−25−10 5 20 35 50 65 80 95 110 125
V
DO
(mV)
T
J
(°C)
V
IN
= 2.7 V
C
OUT
= 10 µF
I
OUT
= 1.5 A
0
10
20
30
40
50
60
70
80
f (Hz)
1 10k 10M1k
Ripple Rejection (dB)
I
OUT
= 1 mA
I
OUT
= 1.5 A
V
IN
= 4 V
C
OUT
= 10 µF
C
NR
= 0.1 µF
10 100 100k 1M
0
10
20
30
40
50
60
70
80
f (Hz)
1 10k 10M1k
Ripple Rejection (dB)
I
OUT
= 1 mA
I
OUT
= 1.5 A
V
IN
= 4 V
C
OUT
= 2.2 µF
C
NR
= 0.01 µF
10 100 100k 1M
0
10
20
30
40
50
60
70
80
f (Hz)
1 10k 10M1k
Ripple Rejection (dB)
I
OUT
= 1 mA
I
OUT
= 1.5 A
V
IN
= 4 V
C
OUT
= 2.2 µF
C
NR
= 0.1 µF
10 100 100k 1M
5
4
2
−30
−60
3
0
30
60
V
IN
(V)
t (µs)
6040200 80 100 120 140 160 180 200
I
OUT
= 1.5 A
C
OUT
= 10 µF
C
NR
= 0.01 µF
dv
dt
+
1 V
ms
∆V
OUT
(mV)
t (µs)
6
5
3
−40
−80
4
0
40
80
6040200 80 100 120 140 160 180 200
I
OUT
= 1.5 A
C
OUT
= 10 µF
C
NR
= 0.01 µF
dv
dt
+
1 V
ms
V
IN
(V)
∆V
OUT
(mV)
∆V
OUT
(mV)
t (µs)
2
1
−1
−75
−150
0
0
75
150
I
OUT
(A)
3002001000 400 500 600 700 800 900 1000
V
IN
= 3.8 V
C
OUT
= 10 µF
C
NR
= 0.01 µF
di
dt
+
1.5 A
ms
TPS786xx
www.ti.com SLVS389L –SEPTEMBER 2002–REVISED OCTOBER 2010
TYPICAL CHARACTERISTICS (continued)
TPS78630
ROOT MEAN SQUARED TPS78628 TPS78630
OUTPUT NOISE DROPOUT VOLTAGE RIPPLE REJECTION
vs vs vs
BYPASS CAPACITANCE JUNCTION TEMPERATURE FREQUENCY
Figure 7. Figure 8. Figure 9.
TPS78630 TPS78630 TPS78630
RIPPLE REJECTION RIPPLE REJECTION RIPPLE REJECTION
vs vs vs
FREQUENCY FREQUENCY FREQUENCY
Figure 10. Figure 11. Figure 12.
TPS78618 TPS78630 TPS78628
LINE TRANSIENT RESPONSE LINE TRANSIENT RESPONSE LOAD TRANSIENT RESPONSE
Figure 13. Figure 14. Figure 15.
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