The most common component confused with this marking is the .
The (frequently indexed under its full part number OZ8681L or OZ8681LN ) is a highly integrated, SMBus-programmable, multi-chemistry battery charge controller designed primarily for modern laptop motherboards, particularly within Lenovo IdeaPad systems. Functioning as a Smart Battery Charger (SBC) within a Smart Battery System (SBS) architecture, this integrated circuit dynamically balances system power delivery and multi-cell battery packs to maximize efficiency. Technical datasheets for this microchip reveal its operations, pinning architecture, and deployment procedures for hardware repair technicians and electrical engineers. Core Functional Specifications
This post unpacks the datasheet of the 8681L, exploring its architecture, critical specifications, thermal management, and application pitfalls. 8681l ic datasheet
: Programmable via 6-bit DAC from 256mA to 11.008A . Package Type : Space-saving 16-pin QFN .
: Verify that the low-ohm current sense resistors connected to ACP/ACN or SRP/SRN have not drifted in resistance or cracked due to thermal fatigue. The most common component confused with this marking is the
Forum posts indicate the OZ8681LN is used as a in notebook motherboards. One user reported encountering the IC in the smart charging stage of a Positivo notebook, while another referenced it in relation to a Haswell‑based laptop motherboard. In these contexts, the IC is labeled simply as "8681L" on the PCB, complicating identification.
Common Applications An 8681L-style IC might be found in battery-powered devices (smartphones, wearables), IoT nodes, sensor front-ends, LED drivers, motor controllers, and power supplies for embedded systems. Its role could range from providing a clean bias rail for sensitive ADCs to efficiently converting battery voltage to digital-logic rails. Designers select such an IC based on required output power, efficiency, package, cost, and integration level (for example, whether integrated MOSFETs are desired). Package Type : Space-saving 16-pin QFN
: Receives power from the main DC input line.