LM2576
TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 15)
Figure 2. Normalized Output Voltage
Figure 3. Line Regulation
1.0
0.8
0.6
1.4
V
I
= 20 V
1.2
1.0
0.8
0.6
in
I
T
= 500 mA
Load
= 25°C
= 500 mA
Load
Normalized at T = 25
J
°C
J
0.4
0.2
3.3 V, 5.0 V and ADJ
0
–0.2
–0.4
0.4
0.2
0
12 V and 15 V
–0.2
–0.4
–0.6
–0.6
–0.8
–1.0
–50
–25
0
25
50
75
100
125
0
5.0
10
15
V , INPUT VOLTAGE (V)
in
20
25
30
35
40
T , JUNCTION TEMPERATURE (
°
C)
J
Figure 4. Dropout Voltage
Figure 5. Current Limit
2.0
1.5
1.0
0.5
0
6.5
6.0
5.5
V
= 25 V
I
Load
= 3.0 A
in
5.0
4.5
4.0
I
= 500 mA
Load
L1 = 150 µH
R
= 0.1
Ω
ind
–50
–25
0
25
50
75
100
125
–50
–25
0
25
50
75
100
125
T , JUNCTION TEMPERATURE (
°C)
T , JUNCTION TEMPERATURE (°C)
J
J
Figure 6. Quiescent Current
Figure 7. Standby Quiescent Current
20
18
200
V
= 5.0 V
V
= 5.0 V
180
160
140
120
100
80
out
ON/OFF
Measured at
Ground Pin
16
T
= 25°C
J
14
V
= 40 V
in
I
= 3.0 A
Load
12
10
V
= 12 V
in
60
I
= 200 mA
Load
8.0
6.0
4.0
40
20
0
–50
0
5.0
10
15
20
25
30
35
40
–25
0
25
50
75
100
125
V
, INPUT VOLTAGE (V)
T , JUNCTION TEMPERATURE (°C)
in
J
5
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA ]
