Datasheet

–80
–20
20
40
80
Gain – dB
–40
0
60
–60
100 1 k 10 k 100 k 1 M
f – Frequency – Hz
Phase
Gain
Phase – °
–180
45
45
90
180
–90
0
135
–135
V
O
= 5.0 V
V
I
= 12 V
I
O
= 8 A
–20
20
40
80
Gain – dB
–40
0
60
100 1 k 10 k 100 k 1 M
f – Frequency – Hz
Phase – °
–180
45
45
90
180
–90
0
135
–135
–80
–60
V
O
= 3.3 V
V
I
= 12 V
I
O
= 8 A
Phase
Gain
V
I
= 12 V
D-CAP Mode
R
GV
= 10 kW
Auto-Skip
CCM
OOA
4.90
4.94
4.98
5.02
5.06
5.10
V
O1
– 5.0-V Output Voltage – V
4.96
5.00
5.04
5.08
4.92
0 2 4 6 81 3 5 7
I
O1
– 5-V Output Current – A
3.20
3.24
3.28
3.32
3.36
3.40
V
O2
– 3.3-V Output Voltage – V
3.26
3.30
3.34
3.38
3.22
0 2 4 6 81 3 5 7
I
O2
– 3.3-V Output Current – A
CCM
Auto-Skip
and
OOA
V
I
= 12 V
D-CAP Mode
R
GV
= 10 kW
TPS51220A
www.ti.com SLUS897E –DECEMBER 2008–REVISED JANUARY 2013
TYPICAL CHARACTERISTICS (continued)
5-V OUTPUT VOLTAGE 3.3-V OUTPUT VOLTAGE
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 29. Figure 30.
5.0-V BODE-PLOT – GAIN AND PHASE 3.3-V BODE-PLOT – GAIN AND PHASE
vs vs
FREQUENCY FREQUENCY
Figure 31. Figure 32.
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