Hello,
The BQ25619 does not internally detect if a battery exists.
This FAQ I link here further addresses your question. https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1022795/faq-bq25601-faq-why-does-the-led…
Irene,
1. If the charger completely shuts down without VBUS and VBAT, all the register settings will not be saved. When VBUS rises above VVBUS_UVLOZ or BAT rises above VBAT_UVLOZ , I2C interface is ready for communication and all the registers are reset…
Hi,
Please visit the FAQ below for the details.
https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1021465/faq-why-vsys-does-not-start-up-normally-when-there-is-a-loading-on-the-sys-and-the-battery-is-not-present…
Hi Jeong,
On the BQ25601 charge is enabled by default. The IC does not detect battery connection, it will always attempts to charge. When no battery is connected IC will regulate the voltage of the BAT pin capacitor as if it is a small battery. Then when…
Chandan,
1. Please follow the d/s. The acceptable range for charge current is 300 mA to 3000 mA
2. For RICHG = 1100 Ω, VBAT = 3.1V or 3.8V, TJ = –40°C - 85°C, Fast charge current accuracy is between 0.516A and .715A.
3. Please vis…
Jason,
1. When the BAT pin is connected to a real battery or a battery simulator, there will be trickle charge when VBAT is below VSHORT.
2. If the BAT pin is open, i.e. nothing is connected to the BAT pin, the BAT pin will have voltage only. Please refer…