Datasheet

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
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and
OOA
CCM
V
I
= 12 V
Current Mode
(Non-droop)
R
GV
= 9.1 kW
C = 1.8 nF
V
I
= 12 V
Current Mode
(Non-droop)
R
GV
= 10 kW
C = 1.8 nF
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and
OOA
CCM
0 2 4 6 81 3 5 7
I
O1
– 5-V Output Current – A
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
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 8
1 3 5 7
I
O1
– 5-V Output Current – A
V
I
= 12 V
Current Mode
R
GV
= 18 kW
Auto-Skip
CCM
OOA
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
Auto-Skip
and
OOA
CCM
V
I
= 12 V
Current Mode
R
GV
= 12 kW
TPS51220A
SLUS897E –DECEMBER 2008–REVISED JANUARY 2013 www.ti.com
TYPICAL CHARACTERISTICS (continued)
5-V OUTPUT VOLTAGE 3.3-V OUTPUT VOLTAGE
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 25. Figure 26.
5-V OUTPUT VOLTAGE 3.3-V OUTPUT VOLTAGE
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 27. Figure 28.
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