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LM2575 数据表(PDF) 21 Page - Motorola, Inc

部件名 LM2575
功能描述  EASY SWITCHERE??1.0 A STEP-DOWN VOLTAGE REGULATOR
PDF  28 Pages
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制造商  MOTOROLA [Motorola, Inc]
网页  http://www.freescale.com
标志 MOTOROLA - Motorola, Inc

LM2575 数据表(HTML) 21 Page - Motorola, Inc

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LM2575
21
MOTOROLA ANALOG IC DEVICE DATA
Figure 33. Adjustable Power Supply with Low Ripple Voltage
D1
1N5819
L1
150
µH
Output
2
4
Feedback
R2
50 k
R1
1.1 k
L2
20
µH
Regulated
Output Voltage
1.2 V to 35 V @1.0 A
Optional Output
Ripple Filter
Unregulated
DC Input
+
Cout
2200
µF
C1
100
µF
Cin
100
µF
/50 V
LM2575–Adj
1
5
3ON/OFF
Gnd
+Vin
30
40
50
60
70
80
1.0
1.5
2.0
2.5
3.0
3.5
010
20
30
25
15
5.0
L, LENGTH OF COPPER (mm)
Minimum
Size Pad
2.0 oz. Copper
L
L
Free Air
Mounted
Vertically
Figure 34. D2PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
PD(max) for TA = 50°C
R
θJA



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