LM2576
TYPICAL PERFORMANCE CHARACTERISTICS
(Circuit of Figure 15)
Figure 2. Normalized Output Voltage
1.0
Vout , OUTPUT VOLTAGE CHANGE (%)
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
–50
Vin = 20 V
ILoad = 500 mA
Normalized at TJ = 25°C
Vout , OUTPUT VOLTAGE CHANGE (%)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
0
5.0
10
15
20
25
30
35
40
12 V and 15 V
3.3 V, 5.0 V and ADJ
ILoad = 500 mA
TJ = 25°C
Figure 3. Line Regulation
–25
0
25
50
75
100
125
TJ, JUNCTION TEMPERATURE (°C)
Vin, INPUT VOLTAGE (V)
Figure 4. Dropout Voltage
2.0
INPUT – OUTPUT DIFFERENTIAL (V)
I O, OUTPUT CURRENT (A)
ILoad = 3.0 A
1.5
6.5
Figure 5. Current Limit
Vin = 25 V
6.0
5.5
5.0
4.5
4.0
–50
1.0
ILoad = 500 mA
0.5
L1 = 150
µH
Rind = 0.1
Ω
0
–50
–25
0
25
50
75
100
125
–25
0
25
50
75
100
125
TJ, JUNCTION TEMPERATURE (°C)
TJ, JUNCTION TEMPERATURE (°C)
Figure 6. Quiescent Current
I stby , STANDBY QUIESCENT CURRENT (
µA)
20
I Q, QUIESCENT CURRENT (mA)
18
16
14
12
10
8.0
6.0
4.0
0
5.0
10
15
20
25
30
35
40
ILoad = 200 mA
ILoad = 3.0 A
Vout = 5.0 V
Measured at
Ground Pin
TJ = 25°C
200
180
160
140
120
100
80
60
40
20
0
–50
Figure 7. Standby Quiescent Current
VON/OFF = 5.0 V
Vin = 40 V
Vin = 12 V
–25
0
25
50
75
100
125
Vin, INPUT VOLTAGE (V)
TJ, JUNCTION TEMPERATURE (°C)
MOTOROLA ANALOG IC DEVICE DATA
5
MOTOROLA [ MOTOROLA, INC ]
