Datasheet

50
60
70
80
90
100
Efficiency − %
I
L
− Load Current − A
V
O
= 1.5 V
V
O
= 1 V
0 10 20 30 40 50 60
I
L
− Load Current − A
Output Ripple − mV
V
O
= 1.5 V
0
5
10
15
20
25
V
O
= 1 V
0 10 20 30 40 50 60
0
3
6
9
12
15
I
L
− Load Current − A
− Power Dissipation − W
P
D
0 10 20 30 40 6050
T
A
− Ambient Temperature −
5
C
I
L
− Load Current − A
0 10 20 30 60
400 LFM
200 LFM
Nat Cinv
20
30
40
50
60
70
80
90
40 50
PTH04040W
SLTS238C –SEPTEMBER 2005–REVISED JUNE 2010 www.ti.com
TYPICAL CHARACTERISTICS (V
I
= 3.3 V)
(1) (2)
CHARACTERISTIC DATA
EFFICIENCY OUTPUT RIPPLE POWER DISSIPATION
vs vs vs
LOAD CURRENT LOAD CURRENT LOAD CURRENT
Figure 1. Figure 2. Figure 3.
TEMPERATURE DERATING
vs
LOAD CURRENT
Figure 4. Safe Operating Area
(1) The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the
converter. Applies to Figure 1, Figure 2, and Figure 3.
(2) SOA curves represent the conditions at which internal components are at or below the manufacturer’s maximum operating
temperatures. Derating limits apply to modules soldered directly to a 4 inches × 4 inches double-sided PCB with 1 oz. copper. Applies to
Figure 4.
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