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BQ21061: BQ21061 JEITA

kevin.huang_FJXM
Expert 2925 points
Part Number: BQ21061
Other Parts Discussed in Thread: BQ25100

The following questions help to confirm. At present, our company has two kinds of charging management IC: ti21061 and ti25100, which have JEITA function,

1. Are there any special precautions when using this JEITA function,

2. Whether the current setting of JEITA has been set directly in IC,

3. Whether ti21061 can be set by I2C. Are there any recommended apps.

4. Is it OK to connect NTC resistance directly? Whether there is any test method to confirm the function.

  • 0
    TI__Mastermind 21590 points

    Hello,

    1) There are no special precautions that need to be taken. JEITA reduces the charge current by half in the cool region and reduces the battery regulation voltage in the warm region.

    2) The current setting when in cool will be based on the fast charge current setting. 

    3) The BQ21061 device can be configured  to JEITA through I2C. The thresholds can be configured too.

    4) The NTC should be connected to the TS pin in parallel with a 10k resistor for the BQ21061. For BQ25100, TS is directly connected to the NTC.