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BQ25895: BQ25895 VBUS input to provide less energy will increase the consumption of battery energy problem cause analysis

Part Number: BQ25895

Hello,

In the charging process of BQ25895, we found that when the input current is limited to 20mA, not only the battery cannot be charged, but also the battery energy will be consumed.The current is about 1mA.Please help to analyze the reasons and provide solutions.

In addition, the test method is as follows: set the dc power supply voltage of VBUS input terminal as 5V and the current limit as 20mA, the battery voltage during the test is about 4-4.1v, and the load connected to VDD_SYS before the test has been disconnected.

The attached drawing is the peripheral design of BQ25895 for your reference.