The TopOff and Fast Charge safety timers are completely separate and do not affect each other. The minimum safety timer period is 3 hours from start of entering Constant-Current state. The fast-charge…
Yes, you are right. When the Vbatt< Vfast_chg-100mV but Vbatt> Vfast_chg-150mV, the MAX77734 cannot restart the charge. Another side, the 150mV setting cannot be modified, MAX77734 has no register for…
According to below test schematics. When MCU send ship mode CMD to MAX77734 through I2C, MAX77734 open the Switch betweeen Vbatt and Vsys, so the Vsys will drop to "0", then the Vbuck drop to "0", so the…
You could use the OTP version of the MAX77734 IC. For these settings that have been programmed at the factory, the LDO directly provides the output voltage after the hardware is started up, without programming…
Figure 1, if MCU send the ship mode CMD to MAX77734, the MAX77734 can enter into the ship mode, but it will re-power on, what's the issue happened?
Figure 1 is the initial application schematic. When…
Question:
Please advise MAX77734 pre-charge current variation when fast-charge=300mA.
Answer :
For I FAST-CC = 300mA:
PQ [% of I FAST-CC ]
Min.
Typ.
Max.
…
Question:
Fast-Charge Safety Timer can be set T_FAST_ CHG (0x24h).
If this register is changed during fast charging, existing timer count will be reset to zero and restart counting?
Or timer count…
Q : What is Fast-Charge Safety Timer Accuracy if tFC=7hours? (not 3hours)
A : The same 10% applies to all timer settings within the specified range, not just tFC = 3 hours.
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