is an SMBus-programmable, NMOS synchronous step-down battery charger designed for single-battery portable systems, offering over 95% efficiency. It optimizes charging time by dynamically managing available adapter current between the system and the battery. Jotrin Electronics ⚙️ Core Features charging current, and adapter current regulation. Interface & Packaging:
: Always test the high-side MOSFETs, input current-sense resistors, and filtering capacitors before dropping in a fresh 8681L IC. A shorted gating MOSFET will instantly blow out your replacement controller upon the first power-up. 8681l ic datasheet
: Gate drive outputs designed to control external P-channel or N-channel MOSFETs in the buck regulator topology. GND : Thermal pad and system ground connection. Common Application & Repair Use Cases Interface & Packaging: : Always test the high-side
: You will frequently find this chip on laptop motherboards (e.g., Lenovo ThinkPad or Sony models) as part of the power management circuit. GND : Thermal pad and system ground connection
If the dynamic power-allocation logic fails, any sudden surge in system utilization can cause the device to instantly shut down due to improper current distribution. Repair and Solder Tips
: Includes anti-interference designs and high-precision data measurement for GPS and medical sensors. Sourcing and Compatibility
The is a highly integrated, SMBus-programmable, multi-chemistry battery charge controller designed primarily for smart battery systems (SBS). It is widely used as a master power management component in portable computer systems, including Lenovo IdeaPad laptops, to handle dynamic AC adapter current allocation and battery health monitoring.