8681l Ic Datasheet __link__

The laptop works fine on the AC adapter but shows in the operating system.

When replacing the chip using a BGA/QFN rework station, pay close attention to the solder profiles: : Target a peak reflow gun temperature of 210∘C210 raised to the composed with power C 215∘C215 raised to the composed with power C

: A simple Google search with the part number ("8681L datasheet") can lead you to various sources, including forums, blogs, and sometimes official datasheets.

The most common component confused with this marking is the . 8681l ic datasheet

Because of its low quiescent current (~25 µA), the 8681L is ideal for battery-powered IoT sensors.

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 .

A key feature outlined in the 8681L technical specifications is its use of . When a laptop is plugged in and turned on, the system load fluctuates constantly based on CPU and GPU utilization. The 8681L continuously tracks this active consumption and dynamically allocates all remaining AC adapter current to the battery charger . This design provides two concrete engineering advantages: The laptop works fine on the AC adapter

This is the simplest use case—converting a higher voltage (e.g., 5V USB) to a lower, cleaner 3.3V.

: Dedicated SCL (Serial Clock) and SDA (Serial Data) pins linked directly to the system's Super I/O / EC chip to process digital charging commands.

: 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. Because of its low quiescent current (~25 µA),

: QFN-16 (Quad Flat No-leads, 16 pins) with an exposed thermal pad on the underside for heat dissipation.

The (most commonly known as the O2Micro OZ8681L or OZ8681LN ) is a highly advanced battery charge controller chip . It is widely used in portable computer systems like Lenovo IdeaPad laptops to manage power safely. When a laptop will not turn on or charge, this chip is often the main cause of the problem. Understanding its datasheet helps repair technicians fix broken motherboard circuits. What is the 8681L IC?

: Target a peak reflow gun temperature of 235∘C235 raised to the composed with power C 245∘C245 raised to the composed with power C for solid joint formation.

Laptop works on AC, but battery is not charging (charging light flashing or off). Laptop will not turn on even with a working battery.

: Main power supply input pins connected to the adapter rail.