Part Number:BQ27541
Hi Experts,
Our customer is using HDQ interface to work with our bq27541, and the pull up voltage is 1.8V due to MTK SoC's limitation, but we found that it will not work. We verified this using EV2400 and bq27541 EVM, and modified the pull up voltage inside the EV2400, found that when HDQ will not work when pull up voltage below ~2V, if you increase the pull up voltage above ~2.5V, it will work now. We are confused about this as we claimed in datasheet it should work when HDQ voltage level is above 1.2V. Please help to check this issue ASAP.
Thanks a lot.
1. HDQ can not work when pull up voltage is below 2V:
2. HDQ can work when pull up voltage is above 2.5V:
