DS3251/DS3252/DS3253/DS3254
20. THERMAL INFORMATION
Table 20-A. Thermal Properties, Natural Convection
PARAMETER
Ambient Temperature (Note 1)
Junction Temperature
MIN
TYP
MAX
+85LC
+125LC
—
-40LC
-40LC
—
Theta-JA (ꢁ ), Still Air (Note 2)
22.4LC/W
9.2LC/W
1.6LC/W
JA
Psi-JB
Psi-JT
Note 1: The package is mounted on a four-layer JEDEC standard test board with no airflow and dissipating maximum power.
Note 2: Theta-JA (ꢁ ) is the junction to ambient thermal resistance, when the package is mounted on a four-layer JEDEC standard test board
JA
with no airflow and dissipating maximum power.
Table 20-B. Theta-JA (ꢀ ) vs. Airflow
JA
FORCED AIR (METERS PER
THETA-JA (ꢀ )
JA
SECOND)
0
1
2.5
22.4LC/W
19.0LC/W
17.2LC/W
21. REVISION HISTORY
REVISION
DESCRIPTION
031805
061705
New Product Release (DS3254)
New Product Release (DS3251/DS3252/DS3253)
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