ppc8572elpxavnd Freescale Semiconductor, Inc, ppc8572elpxavnd Datasheet - Page 124

• Manufacturer Part Number: ppc8572elpxavnd
• Description: Mpc8572e Powerquicc Iii Integrated Communications Processors
• Manufacturer: Freescale Semiconductor, Inc

Thermal
The ratio of I
Solving for T, the equation becomes:
124
V
nT =
V
V
V
I
I
q = Charge of electron (1.6 x 10
n = Ideality factor (normally 1.0)
K = Boltzman’s constant (1.38 x 10
T = Temperature (Kelvins)
H
H
L
f
H
L
– V
= Smaller diode bias current
= Larger diode bias current
= Voltage forward biased
= Diode voltage while I
= Diode voltage while I
L
= 1.986 × 10
H
__________
1.986 × 10
to I
V
MPC8572E PowerQUICC III Integrated Processor Hardware Specifications, Rev. 4
H
L
– V
is usually selected to be 10:1. The above simplifies to the following:
L
–4
–4
× nT
L
H
is flowing
is flowing
–19
–23
C)
Joules/K)
Freescale Semiconductor