Datasheet

LOAD (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0 1 10 100 1000
V
IN
= 5.5V
V
IN
= 5.0V
V
IN
= 3.6V
V
IN
= 2.7V
LOAD (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0 1 10 100 1000
V
IN
= 5.5V
V
IN
= 5.0V
V
IN
= 3.6V
V
IN
= 2.7V
LOAD (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0 1 10 100 1000
V
IN
= 5.5V
V
IN
= 5.0V
V
IN
= 3.6V
V
IN
= 2.5V
V
IN
= 2.7V
LOAD (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0 1 10 100 1000
V
IN
= 5.5V
V
IN
= 3.6V
V
IN
= 2.7V
V
IN
= 5V
LOAD (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0 1 10 100 1000
V
IN
= 3.3V
V
IN
= 3.6V
V
IN
= 2.5V
V
IN
= 2.7V
V
IN
= 5.5V
LOAD (mA)
EFFICIENCY (%)
100
90
80
70
60
50
40
30
20
10
0
0 1 10 100 1000
V
IN
= 5.0V
V
IN
= 3.6V
V
IN
= 2.5V
V
IN
= 2.7V
V
IN
= 5.5V
LM3668
SNVS449M –JUNE 2007–REVISED MAY 2013 www.ti.com
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Typical Application Circuit (Figure 1): V
IN
= 3.6V, L = 2.2 µH, C
IN
= 10 µF, C
OUT
= 22 µF
(1)
, T
A
= 25°C , unless otherwise
stated.
Efficiency at V
OUT
= 3.3V Efficiency at V
OUT
= 3.4V
(Auto Mode) (Forced PWM Mode)
Figure 16. Figure 17.
Efficiency at V
OUT
= 3.4V Efficiency at V
OUT
= 4.5V
(Auto Mode) (Forced PWM Mode)
Figure 18. Figure .
Efficiency at V
OUT
= 4.5V Efficiency at V
OUT
= 5.0V
(Auto Mode) (Forced PWM Mode)
Figure 19. Figure 20.
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