Datasheet

2.000
2.100
2.200
2.300
2.400
2.500
2.600
2.700
2.800
2.900
3.000
-
40
-
30
-
20
-
10
0 10 20 30 40 50 60 70 80
Temperature (ºC)
Current Limit
2A
1A
Rds on
0.000
0.050
0.100
0.150
0.200
0.250
0.300
-40 -30 -20 -10 0 10 20 30 40
50
60 70 80
Temperature (ºC)
-50 0 50 100
Temperatur
e
0.800
0.90
0
1.00
0
1.100
1.20
0
1.30
0
Start-Up Voltage
1.2 1.7 2.2 2.7 3.2
3.7
4.2
Vin (V)
0
0.5
1
1.5
2
Frequency (Mhz)
300k
225k
150
75k
V
DD
= 3.3V
TEMPERATURE (ºC)
-40 -25 -10 5 20 35 50 65 80
1.2365
1.236
1.2355
1.235
1.2345
1.234
1.2335
1.233
1.2325
V
FB
(V)
300mA
600mA
10mA
60.0
65.0
70.0
75.0
80.0
85.0
90.0
95.0
1.8 2.1 2.4 2.7 3.0 3.3 3.6 3.9 4.2 4.5
Vin
Efficiency (%)
LM2623
www.ti.com SNVS188G –MAY 2004–REVISED DECEMBER 2005
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency
vs V
FB
V
IN
vs
V
OUT
= 5.0V Temperature
Figure 3. Figure 4.
Frequency
vs Maximum Start Up Voltage vs
V
IN
Temperature
Figure 5. Figure 6.
Typical R
DS(ON)
vs Typical Current Limit vs
Temperature Temperature
Figure 7. Figure 8.
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