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LM2575 数据表(PDF) 7 Page - First Components International

部件名 LM2575
功能描述  1.0A Step - Down Voltage Switching Regulators 1A output current
PDF  10 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  FCI [First Components International]
网页  http://www.cotra.com.tw/
标志 FCI - First Components International

LM2575 数据表(HTML) 7 Page - First Components International

Back Button LM2575 Datasheet HTML 2Page - First Components International LM2575 Datasheet HTML 3Page - First Components International LM2575 Datasheet HTML 4Page - First Components International LM2575 Datasheet HTML 5Page - First Components International LM2575 Datasheet HTML 6Page - First Components International LM2575 Datasheet HTML 7Page - First Components International LM2575 Datasheet HTML 8Page - First Components International LM2575 Datasheet HTML 9Page - First Components International LM2575 Datasheet HTML 10Page - First Components International  
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 7 / 10 page
background image
7V - 40V
Unregulated
DC Input
+V
IN
1
C
IN
GND 3
5
2
4
D1
MBR360
L1
R2
R1
Output
Feedback
V
=5.0V
OUT
C
OUT
+
+
L
O
A
D
Figure 1(b).Adjustable Output Voltage Versions
V
= V
( 1 +
)
OUT
REF
R2 = R1 (
-1)
where V
= 1.23V, R1 between 1k and 5k.
REF
R2
R1
V
OUT
V
REF
330 µF
100 µF
330 µH
ON/ OFF
Figure 2. Switch Saturation Voltage
1.2
1.0
0.8
0.6
0.4
0
0.2
0.4
0.6
0.8
1.0
SWITCH CURRENT (A)
T = - 55°C
J
2.0
1.5
1.0
0.5
0
-75 -50 -25
0
25
50
75 100 125 150
JUNCTION TEMPERATURE (°C)
Figure 3. Dropout Voltage
DVOUT = 5%
R
= 0.2W
IND
I
= 1A
LOAD
I
= 200mA
LOAD
Typical Performance Characteristics
T = - 25°C
J
T = 150°C
J
LM2575-adj
LM2575 1.0A Step - Down Voltage Switching Regulators



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