Datasheet

I
LOAD
(mA)
40
45
50
55
60
65
70
75
80
85
90
95
100
EFFICIENCY (%)
V
IN
= 5.0V
V
IN
= 2.7V
V
IN
= 3.7V
10
3
10
2
10
1
10
-2
10
-1
10
0
2.5 3 3.5 4 4.5 5 5.5 6
V
IN
(V)
75
80
85
90
95
100
70
EFFICIENCY (%)
I
LOAD
= 1 mA
I
LOAD
= 300 mA
I
LOAD
= 150 mA
0 50 100 150 200 250 300 350
I
LOAD
(mA)
1.7
1.72
1.74
1.76
1.78
1.8
1.82
1.84
1.86
1.88
1.9
V
OUT
(V)
PFM Mode
PWM Mode
-40
TEMPERATURE (°C)
1.77
1.78
1.79
1.80
1.81
1.82
1.83
V
OUT
(V)
806040200-20
I
OUT
= 10 mA
PFM mode
I
OUT
= 150 mA
PWM mode
V
IN
= 3.6V
V
IN
= 2.5V
V
IN
= 3.6V
V
IN
= 5.5V
2.5 3 3.5 4 4.5 5 5.5
V
IN
(V)
10
15
20
NO LOAD I
QUIESCENT
(PA)
TA = 85°C
TA = 25°C
TA = -40°C
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
0
0.05
0.1
I
SHUTDOWN
(PA)
LM3670
www.ti.com
SNVS250E NOVEMBER 2004REVISED FEBRUARY 2013
Typical Performance Characteristics
(unless otherwise stated: V
IN
= 3.6V, V
OUT
= 1.8V)
I
Q
(Non-switching) vs. V
IN
I
Q
vs. Temp
Figure 5. Figure 6.
V
OUT
vs. V
IN
V
OUT
vs. I
OUT
Figure 7. Figure 8.
Efficiency vs. I
OUT
Efficiency vs. V
IN
Figure 9. Figure 10.
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