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Part Number: BQ25010
Hi, I am trying to modify an old design using bq25010. In the old design, CE is grounded, and it use bq25010 to charge a 3.7v Li battery, as well as generate 3.3v for my board.
for my new design, I need to use a different 6.8v Ni-MH battery with an external charger. But I do not want to change my old board design, so I will keep the bq25010.
so I have two questions:
1. I am thinking of shorting 4 pins: USB, BAT/OUT1, BAT/OUT and CE to the new 6.8v battery, is it OK? basically I am using bq25010 only as a buck converter to generate 3.3v for my board.
2. if I tie EN and CE pin permanently to 6.8v, will it be ok? any long term reliability issue? the datasheet only specify absmax for EN is 7v, but didn't specify absmax for CE pin.
Bill Johns, Applications Engineer
Texas Instruments Inc
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In reply to Bill Johns:
Please let me know once you found out the answers next week.
In reply to feng John:
the nominal voltage for my charger output is 6.5v, max 6.8v. that's why I used maximum voltage 6.8v in my questions.
let me re-phrase my questions:
1. I can tie CE pin to 6.8v, to disable the charger, use bq25010 only as a DC-DC converter, right?
2. is bq25010 still in mass production? or there is a newer version that's pin to pin conpatible?
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