lm2574dw ON Semiconductor, lm2574dw Datasheet - Page 5

• Manufacturer Part Number: lm2574dw
• Description: 0.5 A, Adjustable Output Voltage, Stepdown Switching Regulator
• Manufacturer: ON Semiconductor

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