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CC2540TPS62730EM-RD: TPS62733DRYR

Part Number: CC2540TPS62730EM-RD
Other Parts Discussed in Thread: CC2540, TPS62733

Hi

Actually, I am using a Li-ion battery of 4.2V as source for TPS62733 LDO with CC2540.

So LDO has 2 modes 

1) It gives 2.3V as output

2) It gives Vin as output

So what will happen if 4.2V goes to the supply pin of CC2540 at that mode of the LDO?

Will that permanently damages the CC2540?