LM2575D2T-005 Datasheet, PDF (5/28 Pages) ON Semiconductor – 1.0 A, Adjustable Output Voltage, Step-Down

LM2575, NCV2575
TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 14)
0.6
V_in = 20 V
0.4
I_Load = 200 mA
Normalized at
T_J = 25°C
0.2
1.0
I_Load = 200 mA
0.8 ^TJ ^{= 25°C}
0.6
3.3 V, 5.0 V and Adj
0
0.4
-0.2
0.2
-0.4
0
12 V and 15 V
-0.6
-50
-25
0
25
50
75 100 125
T_J, JUNCTION TEMPERATURE (°C)
Figure 2. Normalized Output Voltage
-0.2
0
5.0 10 15 20 25 30 35 40
V_in, INPUT VOLTAGE (V)
Figure 3. Line Regulation
1.2
1.1
1.0
0.9
-40°C
0.8
0.7
25°C
0.6
125°C
0.5
0.4
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
SWITCH CURRENT (A)
Figure 4. Switch Saturation Voltage
3.0
2.5
2.0
1.5
1.0
0.5
0
-50
V_in = 25 V
-25
0
25
50
75
100 125
T_J, JUNCTION TEMPERATURE (°C)
Figure 5. Current Limit
2.0
1.8
I_Load = 1.0 A
1.6
DV_out = 5%
R_ind = 0.2 W
1.4
1.2
1.0 _{ILoad = 200 mA}
0.8
0.6
0.4
-50 -25
0
25
50
75 100 125
T_J, JUNCTION TEMPERATURE (°C)
Figure 6. Dropout Voltage
20
V_out = 5.0 V
18
Measured at
Ground Pin
16
T_J = 25°C
14
I_Load = 1.0 A
12
10
8.0
I_Load = 200 mA
6.0
4.0
0 5.0 10 15 20 25 30 35 40
V_in, INPUT VOLTAGE (V)
Figure 7. Quiescent Current
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