LM2575
Istby , STANDBY QUIESCENT CURRENT (
µ
A)
T
J
= 25°C
Istby , STANDBY QUIESCENT CURRENT (
µ
A)
120
100
80
60
40
20
0
0
5.0
10
15
20
25
30
35
40
V
in
, INPUT VOLTAGE (V)
120
100
80
60
40
20
0
−50
V
in
= 12 V
V
ON/OFF
= 5.0 V
−25
0
25
50
75
100
125
T
J
, JUNCTION TEMPERATURE (°C)
Figure 8. Standby Quiescent Current
Figure 9. Standby Quiescent Current
2.0
0
−2.0
−4.0
−6.0
−8.0
−10
−50
IFB , FEEDBACK PIN CURRENT (nA)
NORMALIZED FREQUENCY (%)
V
in
= 12 V
Normalized at 25°C
40
Adjustable
Version Only
20
0
−20
−25
0
25
50
75
100
125
−40
−50
−25
0
25
50
75
100
125
T
J
, JUNCTION TEMPERATURE (°C)
T
J
, JUNCTION TEMPERATURE (°C)
Figure 10. Oscillator Frequency
Figure 11. Feedback Pin Current
OUTPUT
VOLTAGE
(PIN 2)
10 V
0
I Load, LOAD CURRENT (A) Vout , OUTPUT VOLTAGE
CHANGE (mV)
100
0
OUTPUT
1.0 A
CURRENT
(PIN 2)
0
INDUCTOR
CURRENT
−100
1.0 A
0.5 A
1.0
0.5
0
OUTPUT
20 mV
RIPPLE
/DIV
VOLTAGE
5.0
ms/DIV
100
ms/DIV
Figure 12. Switching Waveforms
Figure 13. Load Transient Response
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