Datasheet

3.3-V EFFICIENCY
vs
OUTPUT CURRENT
0
20
40
60
80
100
0.001 0.01 0.1 1 10
I
OUT2
- 3.3-V Output Current - A
h - Efficiency - %
Auto-skip
PWM Only
OOA
5-V Switcher ON
VIN=8V
VIN=12V
VIN=20V
3.3-VOUTPUTVOLTAGE
vs
INPUTVOLTAGE
3.240
3.270
3.300
3.330
3.360
6 8 10 12 14 16 18 20 22 24 26
V
IN
-InputVoltage-V
V
OUT2
- 3.3-V Output Voltage - V
I
O
=0A
I
O
=6A
0
20
40
60
80
100
0.001 0.01 0.1 1 10
h – Efficiency – %
V
IN
= 20 V
V
IN
= 12 V
V
IN
= 8 V
OOA
Auto-Skip
PWM Only
I
OUT1
– 5-V Output Current – A
5-V EFFICIENCY
vs
OUTPUT CURRENT
TPS51123
SLUS890E –DECEMBER 2008–REVISED JANUARY 2013 www.ti.com
TYPICAL CHARACTERISTICS (continued)
Figure 25. Figure 26.
Figure 27.
16 Submit Documentation Feedback Copyright © 2008–2013, Texas Instruments Incorporated
Product Folder Links: TPS51123