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BQ27441-G1: BQ27441-G1A replacement options

Part Number: BQ27441-G1
Other Parts Discussed in Thread: BQ27425-G1, BQ27520-G4, BQ27425-G2A

Good day,

Customer is using BQ27441-G1A, but it is out of stock. But there are parts on stock for BQ27425-G2A, BQ27425-G1 and also BQ27520-G4.

What are the major differences between these parts? Which one would you recommend to replace BQ27441-G1A in a new design?

The main specs that they are looking for gauge are:

  • 4.2V Charging termination voltage (Single cell LiPo - 4400 mAh)
  • System side 
  • I2C or SMBUS communication 

Could you recommend the best option to replace BQ27441-G1A?

Thank you,

Daria

  • Hello Daria,

    I would recommend bq27520 from feature perspective.  

    BQ27520-G4 can have custom chemistries programmed into it, so can replace BQ27441-G1A for gauging. It provides additional capabilities to improve accuracy. It uses flash memory instead of OTP.

    I believe BQ27425 does not have OTP. It comes with fixed chemistries. If the chemistries are compatible, then you can consider it from cost perspective.