Datasheet

t – Time – 500 ms/div
I
OUT
(10 A/div)
LL (10 V/div)
V
OUT
(500 mV/div)
t – Time – 500 ms/div
I
OUT
(10 A/div)
LL (10 V/div)
V
OUT
(500 mV/div)
I
OUT
– Output Current – A
100.001 0.1 10.01
1.2
V
OUT
(V)
3.3
1.8
50
40
100
h – Efficiency – %
60
80
90
70
V
IN
= 12 V
1.05
50
40
100
h – Efficiency – %
V
IN
= 12 V
60
80
90
70
I
OUT
– Output Current – A
100.001 0.1 10.01
1.1
1.5
V
OUT
(V)
5.0
2.5
Not Recommended for New Designs
TPS51315
SLUS881B –MAY 2009–REVISED AUGUST 2012 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At V
IN
= 12 V, V
V5IN
= 5 V, R
T(on)
= 237 kΩ, and T
A
= 25°C, unless otherwise noted.
EFFICIENCY EFFICIENCY
vs vs
OUTPUT CURRENT OUTPUT CURRENT
Figure 17. X Figure 18. X
X X
X X
Figure 19. 1.05-V Start-Up Waveforms (Heavy Load) Figure 20. 1.05-V Shut-Down Waveforms (Heavy Load)
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