: SMBus (System Management Bus) , permitting real-time programmable charge voltage and charge current adjustments from the system's Embedded Controller (EC).
Designed for multi-chemistry configurations, making it compatible with Lithium-Ion (Li-ion) and Lithium-Polymer (Li-Po) chemistry variants. Package and Architecture Overview
Includes automatic AC adapter detection, in-rush current limiting, and protections against battery over-voltage, over-current, reverse connection, and thermal shutdown. Jotrin Electronics 8681l ic datasheet
: 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
Supply Input pin. Bypass with a low-ESR ceramic capacitor to GND. SW Switch Node pin. Connects directly to the power inductor. 4 GND Ground reference and power ground thermal path. 5 FB : SMBus (System Management Bus) , permitting real-time
The output is an open-drain configuration. You need a choke inductor (L2) to pull up the drain voltage. The datasheet shows a shunt capacitor to ground (C3) to filter the DC supply.
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. Jotrin Electronics : A standout feature of the
The datasheet confirms the IIP3 (Input Third-Order Intercept Point) is around -3 dBm. For a low-current LNA, this is respectable. It ensures that intermodulation products don't swamp the satellite signals.
: Pins dedicated to main VCC supply from the adapter, analog ground (AGND), and power ground (PGND).
. 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?
The IC operates using an , which provides high efficiency (typically >95%) during power conversion. Its primary role is to dynamically manage the power distribution between the system load and the battery.