Datasheet

EFFICIENCY (%)
0
50
100
150
200
250
LOAD (mA)
0
10
20
30
40
50
60
70
80
90
100
0
20 40 60 80
LOAD (mA)
EFFICIENCY (%)
0
10
20
30
40
50
60
70
80
90
100
EFFICIENCY (%)
700
0
100
200
300
400
500 600
LOAD (mA)
0
10
20
30
40
50
60
70
80
90
100
800
1400
0
200
400
600
800
1000
1200
LOAD (mA)
EFFICIENCY (%)
0
10
20
30
40
50
60
70
80
90
100
350
0
50
100
150
200
250
300
LOAD (mA)
EFFICIENCY (%)
0
10
20
30
40
50
60
70
80
90
100
EFFICIENCY (%)
0
10
20
30
40
50
60
70
80
90
100
350
0
50
100
150
200
250 300
LOAD (mA)
400
TI Confidential - NDA Restrictions
LM2731
SNVS217F –MAY 2004–REVISED NOVEMBER 2012 www.ti.com
Typical Performance Characteristics (continued)
Unless otherwise specified: V
IN
= 5V, SHDN pin tied to V
IN
.
Efficiency Efficiency
vs vs
Load Current - "X" Load Current - "Y"
V
IN
= 5V, V
OUT
= 18V V
IN
= 2.7V, V
OUT
= 5V
Figure 21. Figure 22.
Efficiency Efficiency
vs vs
Load Current - "Y" Load Current - "Y"
V
IN
= 3.3V, V
OUT
= 5V V
IN
= 4.2V, V
OUT
= 5V
Figure 23. Figure 24.
Efficiency Efficiency
vs vs
Load Current - "Y" Load Current - "Y"
V
IN
= 2.7V, V
OUT
= 12V V
IN
= 3.3V, V
OUT
= 12V
Figure 25. Figure 26.
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