Texas Instruments LM3448 -120VAC, 6W Isolated Flyback LED Driver Eval Board LM3448-120VFLBK/NOPB LM3448-120VFLBK/NOPB Datenbogen
Produktcode
LM3448-120VFLBK/NOPB
Thermal Performance
9
Thermal Performance
The board temperature was measured using an IR camera (HIS-3000, Wahl) while running under the
following conditions: V
following conditions: V
IN
= 120V
RMS
, I
LED
= 228mA, # of LEDs = 9, P
OUT
= 6.2W.
NOTE: Thermal performance is highly dependent on the user's final end-application enclosure, heat-
sinking methods, ambient operating temperature, and PCB board layout in addition to the electrical
operating conditions. This LM3448 evaluation board is optimized to supply 6W of output power at room
temperature without exceeding the thermal limitations of the LM3448. However higher output power levels
can be achieved if precautions are taken not to exceed the power dissipation limits of the LM3448
package or die junction temperature. Please see the LM3448 Phase Dimmable Offline LED Driver with
Integrated FET Data Sheet (
sinking methods, ambient operating temperature, and PCB board layout in addition to the electrical
operating conditions. This LM3448 evaluation board is optimized to supply 6W of output power at room
temperature without exceeding the thermal limitations of the LM3448. However higher output power levels
can be achieved if precautions are taken not to exceed the power dissipation limits of the LM3448
package or die junction temperature. Please see the LM3448 Phase Dimmable Offline LED Driver with
Integrated FET Data Sheet (
) for additional details regarding its thermal specifications.
•
Cursor 1: 61.5°C
•
Cursor 2: 56.2°C
•
Cursor 3: 57.7°C
•
Cursor 4: 53.8°C
•
Cursor 5: 52.9°C
Figure 20. Top Side - Thermal Scan
9
SNOA554C – October 2011 – Revised May 2013
AN-2090 LM3448 -120VAC, 6W Isolated Flyback LED Driver
Copyright © 2011–2013, Texas Instruments Incorporated