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:
: It is essential for managing the charging cycle of original high-capacity cells, ensuring long life cycles (often 500+ times). Replacing the 8681L IC
For technicians looking for replacement parts on MacFactory or AliExpress , it is vital to ensure the part number matches exactly ( or OZ8681L ). 8681l ic datasheet
The (primarily known as the OZ8681L / OZ8681LN manufactured by O2Micro International Ltd ) is a highly integrated, SMBus-programmable, multi-chemistry battery charge controller . It is commonly used as a Smart Battery Charger (SBC) within consumer electronic motherboards, most notably Lenovo IdeaPad laptops .
When using hot-air rework stations to replace a damaged chip with new units from parts stores like MacFactory or SVP Technologies , ensure proper thermal management. Because of the QFN package's exposed center ground pad, apply a uniform pre-heat to the PCB layer stack to avoid trace delamination or thermal stress warping on delicate inner copper layers. Interface & Packaging: : It is essential for
In laptop board-level diagnostics, the 8681L chip frequently features in failure pathways associated with liquid damage, power surges, or component aging. Technicians searching for the datasheet are typically trying to resolve specific power symptoms: Symptom 1: Laptop Runs on Battery but Won't Charge
Verify the voltage divider circuit that tells the chip the adapter is plugged in. It is commonly used as a Smart Battery
The 8681L IC datasheet provides detailed electrical characteristics, including:
The outlines the specifications for the OZ8681L (also marked as OZ8681LN) , a highly integrated, SMBus-programmable, multi-chemistry battery charge controller developed by O2Micro. This integrated circuit (IC) acts as a Smart Battery Charger (SBC) within modern Smart Battery Systems (SBS). It is predominantly featured on the motherboards of portable computers, such as Lenovo IdeaPad and HP laptops, to handle efficient power delivery and battery life optimization. Core Overview of the 8681L IC
Complete failure to power on, caused by a shorted 8681L IC pulling down the primary system power rail (often referred to as +19V or VIN ).
A shorted internal gate driver within the QFN-16 chip can pull down the main system power rail (VIN/B+), keeping the laptop entirely unresponsive.