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TPS7A7002: thermal resistance check - J to B - datasheet value seems high.

Part Number: TPS7A7002

Data sheet www.ti.com/.../tps7a7002.pdf lists thermal resistance Junction to board as 29.9 C/W, and J to C (bottom) as 6.9 C/W.  I am using the 29.9 C/W value in my 2-resistor model for thermal simulation. Is this value correct?  Seems high compared to R to C (bot) for a  component that looks designed to dump heat to the PCB.