LM2575
Figure 8. Standby Quiescent Current
Istby , STANDBY QUIESCENT CURRENT (
µ
A)
120
100
80
60
40
20
0
0
5.0
10
15
20
25
30
35
40
Vin, INPUT VOLTAGE (V)
Istby , STANDBY QUIESCENT CURRENT (
µ
A)
TJ = 25°C
120
100
80
60
40
20
0
–50
Figure 9. Standby Quiescent Current
Vin = 12 V
VON/OFF = 5.0 V
–25
0
25
50
75
100
125
TJ, JUNCTION TEMPERATURE (°C)
Figure 10. Oscillator Frequency
2.0
0
–2.0
–4.0
–6.0
–8.0
–10
–50
IFB , FEEDBACK PIN CURRENT (nA)
NORMALIZED FREQUENCY (%)
Vin = 12 V
Normalized at 25°C
40
Figure 11. Feedback Pin Current
Adjustable
Version Only
20
0
–20
–25
0
25
50
75
100
125
–40
–50
–25
0
25
50
75
100
125
TJ, JUNCTION TEMPERATURE (°C)
TJ, JUNCTION TEMPERATURE (°C)
Figure 12. Switching Waveforms
OUTPUT
VOLTAGE
(PIN 2)
I Load, LOAD CURRENT (A) Vout , OUTPUT VOLTAGE
CHANGE (mV)
Figure 13. Load Transient Response
100
0
10 V
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
µs/DIV
100
µs/DIV
6
MOTOROLA ANALOG IC DEVICE DATA
MOTOROLA [ MOTOROLA, INC ]
