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STM32L100C6 Datasheet, PDF (97/103 Pages) STMicroelectronics – Ultra-low-power platform | |||
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STM32L100C6 STM32L100R8/RB
Package information
7.3
Thermal characteristics
The maximum chip-junction temperature, TJ max, in degrees Celsius, may be calculated
using the following equation:
TJ max = TA max + (PD max à ÎJA)
Where:
⢠TA max is the maximum ambient temperature in ° C,
⢠ÎJA is the package junction-to-ambient thermal resistance, in ° C/W,
⢠PD max is the sum of PINT max and PI/O max (PD max = PINT max + PI/Omax),
⢠PINT max is the product of IDD and VDD, expressed in Watts. This is the maximum chip
internal power.
PI/O max represents the maximum power dissipation on output pins where:
PI/O max = Σ (VOL à IOL) + Σ((VDD â VOH) à IOH),
taking into account the actual VOL / IOL and VOH / IOH of the I/Os at low and high level in the
application.
Table 62. Thermal characteristics
Symbol
Parameter
Thermal resistance junction-ambient
LQFP64 - 10 x 10 mm / 0.5 mm pitch
ÎJA Thermal resistance junction-ambient
UFQFPN48 - 7 x 7 mm / 0.5 mm pitch
Value
45
33
Unit
°C/W
Figure 32. Thermal resistance
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