Datasheet

10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
OUTPUT CURRENT (mA)
40
50
60
70
80
90
100
EFFICIENCY (%)
V
IN
= 5.5V
V
IN
= 4.3V
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
OUTPUT CURRENT (mA)
40
50
60
70
80
90
100
EFFICIENCY (%)
V
IN
= 5.5V
V
IN
= 4.3V
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
OUTPUT CURRENT (mA)
0
10
20
30
40
50
60
70
80
90
100
EFFICIENCY (%)
V
IN
= 5.5V
V
IN
= 4.3V
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
OUTPUT CURRENT (mA)
0
10
20
30
40
50
60
70
80
90
100
EFFICIENCY (%)
V
IN
= 5.5V
V
IN
= 4.3V
10
-3
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
OUTPUT CURRENT (mA)
30
40
50
60
70
80
90
100
EFFICIENCY (%)
V
IN
= 5.5V
V
IN
= 3.6V
V
IN
= 2.8V
10
-2
10
-1
10
0
10
1
10
2
10
3
10
4
OUTPUT CURRENT (mA)
30
40
50
60
70
80
90
100
EFFICIENCY (%)
V
IN
= 2.8V
V
IN
= 5.5V
V
IN
= 3.6V
LP3906
www.ti.com SNVS456M –AUGUST 2006–REVISED MAY 2013
TYPICAL PERFORMANCE CHARACTERISTICS — BUCK (continued)
T
A
= 25°C unless otherwise noted
Buck 1 Efficiency Buck 1 Efficiency
vs vs
Output Current Output Current
(PFM to PWM mode, Vout =1.2V, L= 2.2µH) (PFM to PWM mode, Vout =2.0V, L= 2.2µH)
Figure 18. Figure 19.
Buck 2 Efficiency Buck 2 Efficiency
vs vs
Output Current Output Current
(Forced PWM Mode, Vout =1.8V, L= 2.2µH) (Forced PWM Mode, Vout =3.3V, L= 2.2µH)
Figure 20. Figure 21.
Buck 2 Efficiency Buck 2 Efficiency
vs vs
Output Current Output Current
(PFM to PWM Mode, Vout =1.8V, L= 2.2µH) (PFM to PWM Mode, Vout =3.3V, L= 2.2µH)
Figure 22. Figure 23.
Copyright © 2006–2013, Texas Instruments Incorporated Submit Documentation Feedback 13
Product Folder Links: LP3906