SSL21084T/1,118(2013) データシートの表示（PDF） - NXP Semiconductors.

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SSL21084T/1,118
(Rev.:2013)

Mains driver LED driver IC

NXP Semiconductors. 

NXP Semiconductors

SSL21084T

Mains dimmable LED driver IC

8.8 Heat sink

In SSL21084T applications, the PCB copper acts as the heat sink. The IC has thermal

leads (GND pins 2, 6, 10 and 11) for enhanced heat transfer from die to the PCB copper

heat sink. The thermal lead connection can drastically reduce thermal resistance.

Equation 1 shows the relationship between the maximum allowable power dissipation and

the thermal resistance from junction to ambient.

Rthj – a

=

---T---j----m---a---x-----–-----T---a---m----b---

P

(1)

Where:

Rth(j-a) = thermal resistance from junction to ambient

Tj(max) = maximum junction temperature

Tamb = ambient temperature

P = Power dissipation

SSL21084T

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 6 — 3 October 2013

© NXP B.V. 2013. All rights reserved.

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