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LM2574 Datasheet(PDF) 5 Page - ON Semiconductor

Part No. LM2574
Description  0.5 A, Adjustable Output Voltage, Step−Down Switching Regulator
Download  26 Pages
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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LM2574 Datasheet(HTML) 5 Page - ON Semiconductor

 
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LM2574, NCV2574
http://onsemi.com
5
TJ, JUNCTION TEMPERATURE (°C)
TJ, JUNCTION TEMPERATURE (°C)
Vin, INPUT VOLTAGE (V)
Vin, INPUT VOLTAGE (V)
TJ, JUNCTION TEMPERATURE (°C)
Figure 2. Normalized Output Voltage
TJ, JUNCTION TEMPERATURE (°C)
Figure 3. Line Regulation
Vin = 20 V
ILoad = 100 mA
Normalized at TJ = 25°C
Figure 4. Dropout Voltage
Figure 5. Current Limit
Figure 6. Quiescent Current
Figure 7. Standby Quiescent Current
ILoad = 100 mA
TJ = 25°C
3.3 V, 5.0 V and ADJ
12 V and 15 V
Vin = 25 V
ILoad = 100 mA
ILoad = 500 A
Vin = 12 V
Vin = 40 V
L = 300
mH
ILoad = 500 mA
ILoad = 100 mA
Vout = 5.0 V
Measured at
Ground Pin
TJ = 25°C
VON/OFF = 5.0 V
TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 16)
1.0
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
−0.8
−1.0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
−0.2
−0.4
−0.6
2.0
1.5
1.0
0.5
0
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
20
18
16
14
12
10
8.0
6.0
4.0
200
180
160
140
120
100
80
60
40
20
0
125
100
75
60
25
0
−25
−50
40
35
30
25
20
15
10
5.0
0
125
100
75
60
25
0
−25
−50
125
100
75
60
25
0
−25
−50
40
35
30
25
20
15
10
5.0
0
125
100
75
60
25
0
−25
−50


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