Datasheet for the Texas Instruments BQ24735, an SMBus-controlled battery charge controller common on notebook motherboards, in a 2.38 MB PDF. It explains adapter detection, input current sensing, the gate drivers for the charge and power path MOSFETs and the register map. Technicians rely on it when a laptop will not charge, runs only on adapter or shows no power, checking pin voltages such as VCC, ACDET and REGN. Use the pinout and reference circuit to compare readings with a working board.
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