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LM317D2TG View Datasheet(PDF) - ON Semiconductor

Part Name
Description
Manufacturer
LM317D2TG Datasheet PDF : 12 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
LM317, NCV317
80
3.5
PD(max) for TA = +50°C
70
Free Air
Mounted
Vertically
60
50
Minimum
Size Pad
40
RqJA
3.0
2.0 oz. Copper 2.5
L
ÎÎÎÎÎÎÎÎ2.0
L
ÎÎÎÎÎÎÎÎ1.5
30
1.0
0
5.0
10
15
20
25
30
L, LENGTH OF COPPER (mm)
Figure 21. D2PAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
D6*
Vin
32 V to 40 V
Vin1
0.1 mF
LM317
(1)
1N4002
Vout1 RSC
Adjust 1
Current
Limit
Adjust
* Diodes D1 and D2 and transistor Q2 are added to
* allow adjustment of output voltage to 0 V.
1.0K
Q1
2N3822
* D6 protects both LM317's during an input short circuit.
-10 V
Vin2
D1
1N4001
D2
1N4001
LM317
(2)
Vout 2
240
Adjust 2
5.0 k
Voltage
Adjust
1N4001
D5
IN4001
+
10 mF
Iout
Vout
+
1.0 mF
Tantalum
D3
Output Range: 0 VO 25 V
D4
Output Range: 0 IO 1.5 A
Q2
2N5640
IN4001
-10 V
Figure 22. ‘‘Laboratory’’ Power Supply with Adjustable Current Limit and Output Voltage
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