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Original question:
Hi Tank.Xue,
The thermal information for TPS768 is found on the second page of the datasheet:
The Derating Factor column is the reciprocal of thermal resistance; the power rating columns give you the max dissipated power the LDO can handle before reaching a junction temperature of 125ºC at different ambient temperatures.
Please look at the table below with the calculated values for thermal resistance:
| Package | Derating Factor(mW/ºC) | RθJA(ºC/W) |
| SOIC-8 | 5.6818 | 176 |
| HTSSOP-20 | 30.7 | 32.6 |
Regards,
Andres
