LM2576-12 MOTOROLA [Motorola, Inc], LM2576-12 Datasheet - Page 5

• Manufacturer Part Number: LM2576-12
• Description: Easy Switcher 3.0A Step-Down Voltage Regulator
• Manufacturer: MOTOROLA [Motorola, Inc]

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