5.9.1 Package Thermal Characteristics
Table 5-16 provides the thermal resistance characteristics for the package used on this device.
NOTE
Power dissipation of 3.0 W and an ambient temperature of 85ºC is assumed for CBD package.
Table 5-16 Thermal Resistance Characteristics
| NO. |
PARAMETER |
DESCRIPTION |
°C/W(1) |
AIR FLOW (m/s)(2) |
| T1 |
RΘJC |
Junction-to-case |
0.23 |
N/A |
| T2 |
RΘJB |
Junction-to-board |
3.65 |
N/A |
| T3 |
RΘJA |
Junction-to-free air |
12.8 |
0 |
| T4 |
Junction-to-moving air |
10.4 |
0.5 |
| T5 |
9.6 |
1 |
| T6 |
8.8 |
2 |
| T7 |
8.3 |
3 |
| T8 |
ΨJT |
Junction-to-package top |
0.1 |
0 |
| T9 |
0.1 |
0.5 |
| T10 |
0.1 |
1 |
| T11 |
0.1 |
2 |
| T12 |
0.1 |
3 |
| T13 |
ΨJB |
Junction-to-board |
3.7 |
0 |
| T14 |
3.7 |
0.5 |
| T15 |
3.6 |
1 |
| T16 |
3.6 |
2 |
| T17 |
3.5 |
3 |
- These measurements were conducted in a JEDEC defined 2S2P system (with the exception of the Theta JC [RΘJC] measurement, which was conducted in a JEDEC defined 1S0P system) and will change based on environment as well as application. For more information, see these EIA/JEDEC standards:
- JESD51-2, Integrated Circuits Thermal Test Method Environment Conditions - Natural Convection (Still Air)
- JESD51-3, Low Effective Thermal Conductivity Test Board for Leaded Surface Mount Packages
- JESD51-7, High Effective Thermal Conductivity Test Board for Leaded Surface Mount Packages
- JESD51-9, Test Boards for Area Array Surface Mount Packages
- m/s = meters per second