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BQ500511A: BQ500511ARHAR

Part Number: BQ500511A
Other Parts Discussed in Thread: BQ500511

Tool/software:

Hi TI team,  

Due to China SRRC Regulation, we need to adjust the TX frequency band from 110Khz-205khz to 100KHz-148khz.

The feedback from TI suggests that they had already planned for this and there is a pin that can be conditioned on their chip set to force the Transmitter to the 100KHz – 148-KHz band.

A board change will be required to add a pull down resistor o pin 33 of TI chip bq500511.

We need to know what value this resistor should be changed to in order to meet the SRRC requirements for 100-148 KHz.

Currently, our resistor value is 10K, a nd the measured operating frequency is 170 KHz.