LM2576-12 데이터 시트보기 (PDF) - Motorola => Freescale
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LM2576-12 Datasheet PDF : 28 Pages
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LM2576
TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 15)
Figure 2. Normalized Output Voltage
1.0
0.8 Vin = 20 V
0.6
ILoad = 500 mA
Normalized at TJ = 25°C
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
–50 –25
0
25
50
75 100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 3. Line Regulation
1.4
1.2 ILoad = 500 mA
1.0 TJ = 25°C
0.8
0.6
3.3 V, 5.0 V and ADJ
0.4
0.2
0
12 V and 15 V
–0.2
–0.4
–0.6
0 5.0 10 15 20 25 30 35 40
Vin, INPUT VOLTAGE (V)
Figure 4. Dropout Voltage
2.0
ILoad = 3.0 A
1.5
1.0
ILoad = 500 mA
0.5
L1 = 150 µH
Rind = 0.1 Ω
0
–50 –25
0
25
50
75 100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 5. Current Limit
6.5
Vin = 25 V
6.0
5.5
5.0
4.5
4.0
–50 –25
0
25
50
75 100 125
TJ, JUNCTION TEMPERATURE (°C)
Figure 6. Quiescent Current
20
18
Vout = 5.0 V
Measured at
16
Ground Pin
TJ = 25°C
14
12
ILoad = 3.0 A
10
8.0
ILoad = 200 mA
6.0
4.0
0 5.0 10 15 20 25 30 35 40
Vin, INPUT VOLTAGE (V)
Figure 7. Standby Quiescent Current
200
180
VON/OFF = 5.0 V
160
140
120
Vin = 40 V
100
80
60
Vin = 12 V
40
20
0
–50 –25
0
25
50
75 100 125
TJ, JUNCTION TEMPERATURE (°C)
MOTOROLA ANALOG IC DEVICE DATA
5
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