ISL59910 Datasheet, PDF (11/12 Pages) Intersil Corporation – Triple Differential Receiver/Equalizer

ISL59910, ISL59913
Where
θ_JA=
(_---T_----j_{---–----}T_-----a_----)
PD
=
50.4 C W
(EQ. 3)
Tj is the maximum junction temperature (+150°C)
Ta is the maximum ambient temperature (+85°C)
For a QFN 28 package in a properly layout PCB heatsinking
copper area, +37°C/W θ_JA thermal resistance can be
achieved. To disperse the heat, the bottom heatspreader
must be soldered to the PCB. Heat flows through the
heatspreader to the circuit board copper then spreads and
converts to air. Thus the PCB copper plane becomes the
heatsink. This has proven to be a very effective technique. A
separate application note details the 28 Ld QFN. PCB
design considerations are available.
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11
FN6406.0
December 15, 2006