Tool/software:
Hi.
BQ25306 was used to design a standalone charger.
The STAT pin is toggles to 1HZ.
* TS pin
-. The TS pin was entered at 1.2V by replacing the R17 and R21 resistors for testing. R20 is NC
* VBUS
-. The voltage of the VBUS is 5V. It is powered by a USB charger.
* EN
-. The EN pin is connected by a 10K pull-down,
* POL
-. POL pin is floating.
* BAT
-. When the battery is connected to P2, the BAT pin Voltage measures 3.7V.
* REGN
-. REGN pin output 5V
* SW
-. The SW pin is connected to a 1uf inductor and when the VBUS voltage is connected, the STAT pin toggles.
At this time, 0.7V is measured when the SW pin voltage is measured
-. 3.7V (battery voltage) is measured when measuring the SW pin when the battery is connected to P2.
The problem is that the STAT pin keeps toggling.
I don’t' know the reason.
