Datasheet

0.10
1.00 10.00 100.00 1000.00
LOAD (mA)
0
10
20
30
40
50
60
70
80
90
100
EFFICIENCY
(%)
4.5V
5.5V
2.7V
3.6V
0.10
1.00 10.00 100.00 1000.00
LOAD (mA)
0
10
20
30
40
50
60
70
80
90
100
EFFICIENCY
(%)
4.5V
5.5V
3.6V
2.7V
2.7 3.4 4.1 4.8 5.5
1.8
1.89
1.98
2.07
2.16
2.25
SWITCH FREQUENCY (MHz)
V
IN
(V)
Buck1 = Buck2
100 200 300 400 500 600
LOAD (mA)
1
1.05
1.1
1.15
1.2
1.25
1.3
1.35
1.4
VOUT (V)
0
1.8V
1.5
1.6
1.7
1.8
1.9
VOUT
(
V
)
1.2V
2.7 3.4 4.1 4.8 5.5
V
IN
(V)
0
50
100
150
200
250
300
350
400
450
500
RDS_ON (m:)
NFET
PFET
3.2 3.7 4.2 4.7 5.2 5.5
V
IN
(V)
700
800
900
1000
1100
1200
ILIMIT (mA)
2.7
1150
1050
950
850
750
85°C
25°C
-40°C
LM3370
www.ti.com SNVS406N –NOVEMBER 2005–REVISED MAY 2013
Typical Performance Characteristics (continued)
LM3370, Circuit of Typical Application Circuit, V
IN
= 3.6V, V
OUT1
= 1.5V and V
OUT2
= 2.5V, L = 2.2 µH (NR3015T2R2M), C
IN
=
4.7 µF (0805) and C
OUT
= 10 µF (0805) and T
A
= 25°C, unless otherwise noted.
R
DS_ON
(WSON) Current Limit
vs. vs.
V
IN
V
IN
Figure 9. Figure 10.
Output Voltage
Switching Frequency vs.
vs. Output Current
V
IN
V
IN
= 3.6V (Forced PWM)
Figure 11. Figure 12.
Efficiency Efficiency
vs. vs.
Output Current Output Current
Forced PWM Mode, V
OUT1
= 1.2V Forced PWM Mode, V
OUT1
= 1.8V
Figure 13. Figure 14.
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