Other Parts Discussed in Thread: BQ24075
Hi,
Could you please give your advice for below questions of bq24079?
a) Recharge:
Will bq24079 always run recharge? e.g. will the device start recharge below procedure?
1. Detect fully charge and terminate charging( 9pin (CHG status) will be Low to high impedance)
2. Host MCU set the 4 pin (CE) to High (disabling battery charge)
3. Host MCU set the 4 pin (CE) to Low (enabling battery charge)
4. bq24079 start charging.
5. bq24079 detect terminate current ( 1/10 ISET) and stop charging.
At procedure #4, Is there conditions which would not start charging such as Vbat is over 4.0V or charging current already be <1/10 ISET?
b) CHG Status
The datasheet explains "Recharging after termination" is High-impedance in Table 3.
During recharging, will the CHG output be high impeadance? or will the output set Low once charging start?
c) Reset Timer
To reset timer(TMR), datasheet explains that toggling CE pin or toggling EN1,EN2 pin. Is there requirement time to toggle CE?
e.g CE : L -> ??ms -> H -> ??ms -> L -> …
d) Setting ISET
User would like to change the resistance value of ISET during charging. (He would like to adjust charging current during charging) Is it possible to change the value?
e) Differences between bq24079 and bq24075
I believe the difference is the charging current. Is there another differences?
Regards,
Nagata.
