LM2575, NCV2575
TYPICAL PERFORMANCE CHARACTERISTICS
(Circuit of Figure 14)
0.6
Vout , OUTPUT VOLTAGE CHANGE (%)
Vout , OUTPUT VOLTAGE CHANGE (%)
0.4
0.2
0
-0.2
-0.4
-0.6
-50
V
in
= 20 V
I
Load
= 200 mA
Normalized at
T
J
= 25°C
1.0
0.8
0.6
0.4
0.2
0
-0.2
12 V and 15 V
I
Load
= 200 mA
T
J
= 25°C
3.3 V, 5.0 V and Adj
-25
0
25
50
75
100
125
0
5.0
10
15
20
25
30
35
40
T
J
, JUNCTION TEMPERATURE (°C)
V
in
, INPUT VOLTAGE (V)
Figure 2. Normalized Output Voltage
Figure 3. Line Regulation
1.2
Vsat , SATURATION VOLTAGE (V)
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0
125°C
25°C
-40°C
IO , OUTPUT CURRENT (A)
3.0
2.5
2.0
1.5
1.0
0.5
V
in
= 25 V
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0
-50
-25
0
25
50
75
100
125
SWITCH CURRENT (A)
T
J
, JUNCTION TEMPERATURE (°C)
Figure 4. Switch Saturation Voltage
Figure 5. Current Limit
2.0
INPUT-OUTPUT DIFFERENTIAL (V)
IQ , QUIESCENT CURRENT (mA)
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
-50
-25
0
25
50
75
100
125
I
Load
= 200 mA
I
Load
= 1.0 A
DV
out
= 5%
R
ind
= 0.2
W
20
18
16
14
12
10
8.0
6.0
4.0
0
5.0
10
15
20
25
30
35
40
I
Load
= 200 mA
I
Load
= 1.0 A
V
out
= 5.0 V
Measured at
Ground Pin
T
J
= 25°C
T
J
, JUNCTION TEMPERATURE (°C)
V
in
, INPUT VOLTAGE (V)
Figure 6. Dropout Voltage
Figure 7. Quiescent Current
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