mg39u103ah-050 Megawin Technology, mg39u103ah-050 Datasheet - Page 6

• Manufacturer Part Number: mg39u103ah-050
• Description: 1-channel 350v, 50ma/80ma Constant Current Dc Led Driver
• Manufacturer: Megawin Technology

10
The MG39U103 can sustain an input voltage level as high as 350V. But users should care the heat dissipation
issue for their applications. The following diagram shows the relation between the package temperatures and
power dissipation.
PS: Rule of thumb, it is suggested that the IC surface temperature is maintained below 90 Celsius degree.
For TO-252 package, maintain the power dissipation below 2W.
6
Application information
140
120
100
80
60
40
20
The thermal resistance is around 66ºC/W, junction to ambient (no air flow)
0
Conditions: TO-252 package, Room Temperature: 20ºC.
0.2
0.4
Temperature vs. Power Dissipation
MG39U103-xxx Datasheet
0.6
Power Dissipation (W)
0.8
1
1.2
1.4
1.6
1.8
MEGAWIN