IP5306

The IP5306 is a highly integrated power-bank SoC from Injoinic in an ESOP-8 package. One inductor serves both directions: a synchronous switching charger delivers up to 2.1 A into the cell at up to 91% efficiency, and the synchronous boost outputs 5 V at up to 2.4 A with up to 92% efficiency, while built-in path management supports charging and discharging at the same time. Fuel gauging drives one to four LEDs, a key input handles power-on and the flashlight output, standby current stays under 100 uA and protection covers output overcurrent, overvoltage and short circuit plus battery overcharge and over-discharge, collapsing the whole power-bank control circuit into one device. Selection advice: the base code is trimmed for a 4.20 V cell, and Injoinic offers factory variants for 4.30 V, 4.35 V and 4.40 V cells, so state your cell voltage explicitly when ordering rather than assuming the default trim. Parameters verified against Injoinic documentation.