Datasheet

-30
-20
-10
0
10
20
30
40
50
60
70
80
90
TEMPERATURE (
o
C)
1.75
1.80
1.85
1.90
1.95
2.00
2.05
2.10
2.15
2.20
CURREN
T LIMIT (A)
-40
V
OUT
= 8V
V
IN
= 4.2V
V
IN
= 5.5V
V
IN
= 3.0V
-40 -20 0 20 40 60 80
TEMPERATURE (
o
C)
1.40
1.50
1.60
1.70
1.80
1.90
2.00
2.10
CURREN
T LIMIT (A)
-30 -10 10 30 50 70 90
V
IN
= 4.2V
V
IN
= 5.5V
V
IN
= 3.0V
V
OUT
= 15V
90.0
90.5
91.0
91.5
92.0
92.5
93.0
93.5
94.0
-40 -25 -10 5 20
35
50 65
80
95
110 125
TEMPERATURE (
o
C)
MAXIMUM DUTY CYCLE (%)
V
IN
= 7.0V
V
IN
= 2.7V
2.6 5.8
INPUT VOLTAGE (V)
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
CURREN
T LIMIT (A)
3.0 3.4 3.8 4.2 4.6 5.0 5.4
V
OUT
= 15V
V
OUT
= 12V
V
OUT
= 8V
-40 -10 5 65 125
1.16
1.18
1.22
1.24
1.26
1.28
1.30
1.32
1.34
SWITCHING FREQUENCY (MHz)
TEMPERATURE (
o
C)
1.20
-25 20 35 50 80 95
110
V
IN
= 2.7V
V
IN
= 7.0V
-25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (
o
C)
91.5
94.0
MAXIM
UM DUTY C
YCLE (%)
-40
93.5
93.0
92.5
92.0
V
IN
= 7.0V
V
IN
= 2.7V
LM3224
SNVS277C –DECEMBER 2004–REVISED MARCH 2013 www.ti.com
Typical Performance Characteristics (continued)
1.25MHz Switching Frequency vs. Temperature 615kHz Maximum Duty Cycle vs. Temperature
Figure 14. Figure 15.
1.25MHz Maximum Duty Cycle vs. Temperature Switch Current Limit vs. V
IN
Figure 16. Figure 17.
Switch Current Limit vs. Temperature Switch Current Limit vs. Temperature
Figure 18. Figure 19.
8 Submit Documentation Feedback Copyright © 2004–2013, Texas Instruments Incorporated
Product Folder Links: LM3224