TPS61050_15 Datasheet, PDF (39/49 Pages) Texas Instruments – High-Power White LED Driver 2-MHz Synchronous Boost Converter

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TPS61050, TPS61052
SLUS525A – MARCH 2007 – REVISED SEPTEMBER 2015
Thermal Considerations (continued)
The maximum power dissipation gets especially critical when the device operates in the linear down mode at
high LED current. For single pulse power thermal analysis (for example, flash strobe), the allowable power
dissipation for the device is given by Figure 63.
4
No Airflow
3.5
3
2.5
2
1.5
t_PCB = 85°C
1
0.5
Theta JB: 35°CW
0
0 100 200 300 400 500 600 700 800 900 1000
Pulse Width - ms
Figure 63. Single Pulse Power Capability (CSP Package)
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