8681l Ic Datasheet Jun 2026

Automatic detection of the AC adapter voltage and status. Typical Application Circuit

This post unpacks the datasheet of the 8681L, exploring its architecture, critical specifications, thermal management, and application pitfalls.

The 8681L, often identified by the full part number (also seen as OZ8681LN), is a specialized integrated circuit designed as a multi-chemistry battery charge controller

The OZ8681L serves as the power management backbone for mobile devices, famously utilized in the Nokia 8800 series 8681l ic datasheet

The (often marked as 8681L ) is a highly integrated, SMBus-programmable battery charge controller manufactured by O2Micro . It is primarily used as a Smart Battery Charger (SBC) in notebook and netbook computer systems to manage the complex charging requirements of multi-chemistry batteries. Core Functionality & Architecture

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

: A standout feature of the 8681L is its ability to monitor real-time system power consumption. When the laptop is powered on, the IC dynamically allocates all remaining current from the AC adapter—that isn't being used by the processor and other components—directly to the battery charger. This ensures the shortest possible charging time without overloading the power adapter. SMBus Programmability Automatic detection of the AC adapter voltage and status

Accepts raw power from the main AC/DC power adapter.

: Includes anti-interference designs and high-precision data measurement for GPS and medical sensors. Sourcing and Compatibility

: The IC is built for industrial-grade thermal performance, often rated to operate reliably at temperatures reaching up to 85°C. Alibaba.com Application in Laptop Engineering In modern ultra-slim laptops like the Lenovo Yoga 2 Pro It is primarily used as a Smart Battery

: The device communicates via the System Management Bus (SMBus), allowing for precise software control over charging parameters such as voltage and current limits. Dual-Sensing Technology

For engineering and repair, the IC requires specific handling: : Due to its QFN package, it is best installed using a reflow oven or hot plate to ensure even heating across its 16 pins.

. However, in contemporary board-level repair and hardware engineering discussions, the "8681L" almost exclusively refers to the O2Micro (OZ) power management controller. Alibaba.com typical application circuit for the OZ8681L?

Originally manufactured by , the LB8681CL product line has been integrated into ON Semiconductor's portfolio. Many component distributors list the part as LB8681CL-N-TL-E , ON Semi's ordering code. When searching for components, all three identifiers—LB8681CL, LB8681CL-N-TL-E, and SANYO's part number—may be used interchangeably.