I found it in the Tube package, which comes with everything you need.The package 8-TSSOP, 8-MSOP (0.118, 3.00mm Width) includes a version of it.A Surface Mount mounting type is assigned to the device.If the temperature is set to -20°C~70°C TA, reliable performance will be assured.A analog IC of POWER SUPPLY SUPPORT CIRCUIT has been used in the design of this device.Device charging requires Constant - Programmable current.The base part number BQ2057 represents its related parts.As far as the terminations are concerned, there are 8.The device has 8 pins in total.Features such as Current are programmable.You need 8 pins for it to work.Channels are available in a total of 1.Using a 5V battery should be enough to run it.As long as the supply voltage is 15V, it is capable of withstanding the voltage.Using a 4.2V output voltage results in high efficiency.There is a constant output current of 2A when it is operating.The device you are looking at belongs to the subcategory of Power Management Circuits.The device can operate at as low a supply voltage as possible, such as 4.5V.It was determined during the design process that Vsup (maximum supply voltage) should be set to 4mA.As far as the input voltage is concerned, it has a minimum of 4.5V volts.