Datasheet

0.01 0.1 1 10
I - Output Current - A
O
0
100
200
300
400
500
600
700
800
900
1000
f - Switching Frequency - kHz
sw
V = 12 V
I
0 5 10 15 20
V - Input Voltage - V
I
400
450
500
550
600
650
700
750
800
850
900
f - Switching Frequency - kHz
sw
I = 1 A
O2
V = 12 V
I
V = 5 V
I
V = 18 V
I
0
10
20
30
40
50
60
70
80
90
100
Efficiency - %
0.001 0.01 0.1
I - Output Current - A
O
I =1 A
O1
400
450
500
550
600
650
700
750
800
850
900
f - Switching Frequency - kHz
sw
0 5 10 15 20
V - Input Voltage - V
I
0
10
20
30
40
50
60
70
80
90
100
Efficiency - %
0.001 0.01 0.1
I - Output Current - A
O
V = 12 V
I
V = 5 V
I
V = 18 V
I
40
50
60
70
80
90
100
Efficiency - %
0 0.5 1 1.5 2
I - Output Current - A
O
V = 12 V
I
V = 5 V
I
V = 18 V
I
TPS54294
www.ti.com SLVSB00D –OCTOBER 2011–REVISED SEPTEMBER 2013
TYPICAL CHARACTERISTICS
One output is enabled unless otherwise noted. VI = VIN1 or VIN2.
VIN = 12 V, T
A
= 25°C (unless otherwise noted).
Figure 13. VO1=3.3V, Efficiency vs Output Current Figure 14. VO1=1.5V, Efficiency vs Output Current
Figure 15. VO2=1.5V, Efficiency vs Output Current Figure 16. VO1=3.3V, SW-frequency vs Input Voltage
Figure 17. VO2=1.5V, SW-frequency vs Input Voltage Figure 18. VO1=3.3V, SW-frequency vs Output Current
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