Datasheet

USB 2.0 Hi-Speed Hub Controller
Datasheet
SMSC USB251xB/xBi 55 Revision 2.2 (02-17-12)
DATASHEET
T
J
= P x Θ
JC
+ T
C
Max Power Supported = (T
J Max. Spec.
x T
Amb.
)/ Θ
JA
Table 6.11 Legend
SYMBOL DESCRIPTION
T
J
Junction temperature
P Power dissipated
Θ
JA
Junction-to-ambient-temperature
Θ
JC
Junction-to-top-of-package
Ψ
JT
Junction-to-bottom-of-case
T
A
Ambient temperature
T
C
Temperature of the bottom of the case
T
T
Temperature of the top of the case