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MC33269DR2-50G Datasheet, PDF (5/12 Pages) ON Semiconductor – 800 mA, Adjustable Output,Low Dropout Voltage Regulator | |||
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MC33269, NCV33269
170
3.2
150
2.8
PD(max) for TA = 50ï°C
130
2.4
110
90
70
Graph represents symmetrical layout 2.0
ÃÃÃ ÃÃÃ L
2.0 oz.
Copper
ÃÃÃÃÃÃÃÃÃÃÃÃÃ L
1.6
1.2
3.0 mm
50
0.8
RqJA
30
0.4
0
10
20
30
40
50
L, LENGTH OF COPPER (mm)
Figure 8. SOPâ8 Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
100
2.4
Free Air
PD(max) for TA = 50ï°C
90
Mounted
2.0
Vertically
80
Minimum
70
Size Pad
60
2.0 oz. Copper
L
1.6
ÃÃÃÃÃÃ 1.2
L
ÃÃÃÃÃÃ 0.8
50
0.4
RqJA
40
0
0
5.0
10
15
20
25
30
L, LENGTH OF COPPER (mm)
Figure 9. DPAK Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
280
2.50
Free Air
PD(max) for TA = 50ï°C
240
Mounted
1.25
Vertically
200
Minimum
160
Size Pad
120
2.0 oz. Copper
L
0.83
ÃÃÃÃ L
0.63
ÃÃÃÃÃÃÃÃ0.50
80
0.42
RqJA
40
0.35
0
5.0
10
15
20
25
30
L, LENGTH OF COPPER (mm)
Figure 10. SOTâ223 Thermal Resistance and Maximum
Power Dissipation versus P.C.B. Copper Length
http://onsemi.com
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