The maximum junction temperature of CY2DL1510AZC is 135°C.
And you can find the thermal resistance of CY2DL1510AZC in the datasheet:
If you want to calculate the operating junction temperature, you could use the following formula:
Tj = TA + (ƟJA)×(Pd)
ƟJA = Junction-to-ambient thermal resistance (Theta JA).
TA = Ambient operating temperature (temperature grade of the actual device)
Pd = Voltage (V) × Current (I). Typical Voltage and Current values are found in the datasheet
For example, when TA = 55°C, operating voltage V=2.5V, operating current I= 50mA,
then Tj = 55 + 69 x (2.5 x 0.05) = 63.625 °C
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