This can be found in the Tube package.In the package 16-WQFN Exposed Pad, there is a version of it.Mounting type Surface Mount is chosen for the device.Temperature -40°C~85°C TA is recommended for reliable performance.Using an analog IC of type POWER SUPPLY SUPPORT CIRCUIT, this device is able to communicate with the outside world.To charge the device, you need Constant - Programmable current.Identify its related parts based on the base part number LTC4055.There are no terminations in it at all.In the case of the battery pack, it is 4.1V.16 pins are attached to it.In addition to Timer, there are several other programmable options.When charging current is maximum, it is rated at 1A.Currently, there are 1 available channels.In this case, the device's maximum supply voltage is 5.5V.A battery with 0V would be enough for it to run.Regarding the power supply for the part, it is set to 5V.
LTC4055EUF-1#PBF Features
Battery pack voltage of 4.1V 1 channels 16-WQFN Exposed Pad package
LTC4055EUF-1#PBF Applications
There are a lot of Linear Technology/Analog Devices LTC4055EUF-1#PBF Battery Chargers ICs applications.