AN 066 Rev D

8 / 8

16-Jan-2004

Applications Note No. 066

Silicon Discretes

Figure 11. Enlarged Top View of PCB Showing Parts Placement.

Board size: 35mm x 65mm

Board material: FR4

Board thickness: 1mm

SW1

R1

Q1

D1

D2

D3

D4

6. Conclusions

Infineon Technologies’ LED Driver family offers

the end user an easy, cost-effective way to

stabilize LED current in fixed, portable or

automotive LED display applications. DC power

consumption is minimized, as compared to LED

driver circuits employing resistors for current

stabilization.

The

negative

temperature

coefficient of these LED Drivers helps to prevent

thermal runaway conditions in LED displays.

7. References

[1] Application Note 077, “Thermal Reisistance

Calculations”, Infineon Technologies AG, Silicon

Discretes Group. (App note gives overview of

thermal

overstress

issues.

Available

at

http://www.infineon.com/cmc_upload/docum

ents/039/975/Appli077.pdf ).