LM2576
TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 15)
Figure 8. Standby Quiescent Current
Figure 9. Switch Saturation Voltage
200
1.6
180
160
140
120
100
80
1.4
1.2
T
= 25
°C
–40°C
J
1.0
0.8 25
°C
0.6
125°C
60
40
0.4
0.2
0
20
0
0
5
10
15
20
25
30
35
40
0
0.5
1.0
1.5
2.0
2.5
3.0
V
, INPUT VOLTAGE (V)
SWITCH CURRENT (A)
in
Figure 10. Oscillator Frequency
Figure 11. Minimum Operating Voltage
8.0
6.0
4.0
5.0
4.5
4.0
3.5
3.0
2.5
2.0
Adjustable Version Only
V
= 12 V
in
Normalized at
25
°C
2.0
0
–2.0
V
1.23 V
= 500 mA
–4.0
out
1.5
1.0
0.5
0
I
Load
–6.0
–8.0
–10
–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 12. Feedback Pin Current
100
80
Adjustable Version Only
60
40
20
0
–20
–40
–60
–80
–100
–50
–25
0
25
50
75
100
125
T , JUNCTION TEMPERATURE (
°C)
J
6
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA ]
