PTH08080W_14 Datasheet, PDF (6/19 Pages) Texas Instruments – 2.25-A, WIDE-INPUT ADJUSTABLE SWITCHING REGULATOR

PTH08080W
SLTS235D – FEBRUARY 2005 – REVISED SEPTEMBER 2013
TYPICAL CHARACTERISTICS (12-V INPUT) ^{(1) (2)}
EFFICIENCY
vs
OUTPUT CURRENT
100
V_O = 2.5 V ^{VO = 3.3 V VO = 5 V}
90
OUTPUT RIPPLE
vs
OUTPUT CURRENT
100
80
V_O = 1.8 V
80
V_O = 1.5 V
V_O = 1.2 V
70
60
40
V_O = 1.8 V
V_O = 3.3 V
V_O = 2.5 V
V_O = 5 V
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60
50
0
0.5
1
1.5
2
2.5
I_O − Output Current − A
Figure 6.
20
0
V_O = 1.5 V
V_O = 1.2 V
0
0.5
1
1.5
2
2.5
I_O − Output Current − A
Figure 7.
POWER DISSIPATION
vs
OUTPUT CURRENT
1
0.75
0.5
V_O = 5 V
V_O = 3.3 V
V_O = 2.5 V
V_O = 1.8V
0.25
0
0
V_O = 1.5 V
V_O = 1.2 V
0.5
1
1.5
2
2.5
I_O − Output Current − A
Figure 8.
TEMPERATURE DERATING
vs
OUTPUT CURRENT
90
80
Airflow
Nat Conv
70
60
50
40
30
20
0.25
0.75
1.25
1.75
2.25
I_O − Output Current − A
Figure 9.
(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 6, Figure 7, and Figure 8.
(2) The temperature derating 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 100-mm × 100-mm, double-sided PCB with 2-oz. copper.
Applies to Figure 9.
6
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