Datasheet

DocID029162 Rev 6 199/208
STM32F413xG/H Package information
205
7.8 Thermal characteristics
The maximum chip junction temperature (T
J
max) must never exceed the values given in
Table 17: General operating conditions.
The maximum chip-junction temperature, T
J
max., in degrees Celsius, may be calculated
using the following equation:
T
J
max = T
A
max + (PD max x Θ
JA
)
Where:
• T
A
max is the maximum ambient temperature in °C,
•Θ
JA
is the package junction-to-ambient thermal resistance, in ° C/W,
• PD max is the sum of P
INT
max and P
I/O
max (PD max = P
INT
max + P
I/O
max),
• P
INT
max is the product of I
DD
and V
DD
, expressed in Watts. This is the maximum chip
internal power.
P
I/O
max represents the maximum power dissipation on output pins where:
P
I/O
max = Σ (V
OL
× I
OL
) + Σ((V
DD
– V
OH
) × I
OH
),
taking into account the actual V
OL
/ I
OL
and V
OH
/ I
OH
of the I/Os at low and high level in the
application.
7.8.1 Reference document
JESD51-2 Integrated Circuits Thermal Test Method Environment Conditions - Natural
Convection (Still Air). Available from www.jedec.org.
Table 113. Package thermal characteristics
Symbol Parameter Value Unit
Θ
JA
Thermal resistance junction-ambient
LQFP144 - 20 x 20 mm
35
°C/W
Thermal resistance junction-ambient
LQFP100 - 14 x 14 mm
43
Thermal resistance junction-ambient
LQFP64 - 10 x 10 mm
47
Thermal resistance junction-ambient
UFBGA144 - 10 x 10 mm / 0.8 mm pitch
48
Thermal resistance junction-ambient
UFBGA100 - 7 x 7 mm
57
Thermal resistance junction-ambient
WLCSP81 - 4.039 x 3.951 mm
39.7
Thermal resistance junction-ambient
UFQFPN48 - 7 x 7 mm
32
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