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Question about LT1117-5

Category: Datasheet/Specs
Product Number: LT1117-5

Hi,

Regarding the circuit (Battery backed up regulated supply) on page 11 of the LT1117 datasheet, 50 ohm resistor is connected between the GND pin and GND to output 5.2 V.

Since 5.1V or 5.3V may be required in my circuit, please let me know the calculation formula for the resistance value?

Regards,

Kazu