8682l Ic Datasheet Review

: Often found on Apple MacBook Pro and other major brand laptop motherboards as the primary charging controller.

Pins 1-6: VIN, GND, EN, BP (bypass), FB (feedback), VOUT.

| Question | Answer | | :--- | :--- | | | Unknown, likely NOT. A user on RepairLap asked this exact question, but no definitive answer was provided due to a lack of datasheets for comparison. The OZ8681 features simplified SMBus control and is available in the smallest package on the market. Given the differences, they are not recommended as direct substitutes without a schematic. | | Is there a known equivalent replacement? | Potentially the UP1589Q. An online reference suggests the "8682l datasheet rt8239b equivalent up1589q replacement". This is unconfirmed. The best practice is to replace it with an identical OZ8682LN-C1-0-TR . | | Where can I find a schematic using this IC? | Full schematics are elusive. However, schematics for laptop boards known to use this IC (e.g., Lenovo NM-A681, Quanta JW2) may be found on repair forums or schematic repositories. A forum user posted a link to a schematic (filename Quanta_JW2_UMA_Intel_Chief_River_Rev1A.pdf ) which likely contains the 8682L, but the link was no longer active. |

While you should always verify the exact datasheet for your specific batch, the standard specifications for this IC family typically include: 8682l ic datasheet

When a laptop runs a demanding process (like 3D rendering or peak CPU turbo frequencies), the total system draw may briefly exceed the maximum wattage output of the external AC power adapter. Under standard configurations, this could trigger an overcurrent shutdown in the adapter. The 8682L solves this with technology, which temporarily uses the internal battery alongside the AC adapter to stably supply the motherboard's main power rail. 3. Power Path Management

While the full datasheet is restricted, this article consolidates publicly available information to serve as a practical reference. For official documentation, evaluation boards, and sample requests, please contact O2Micro directly through their website () or an authorised distributor.

If you pulled the chip from a device (e.g., a particular brand of power bank), check the PCB for a silkscreen like "8682L-PCB Rev1.0". The OEM may supply the datasheet upon request. : Often found on Apple MacBook Pro and

The 8682L plays a critical role in system architecture by safely throttling power between the external AC adapter, the system load, and the Lithium-Ion (Li-ion) or Lithium-Polymer (Li-Po) battery pack. Its defining feature is the technology. This feature allows the battery to dynamically assist the AC adapter during brief periods of peak system load, preventing the laptop or device from shutting down due to adapter overcurrent limits. Specification Manufacturer O2Micro International Full Part Numbers OZ8682L, OZ8682LN, OZ8682LN-C1-0-TR Communication Interface SMBus (System Management Bus) Level 2 compliant Package Type QFN-16 (Quad Flat No-lead, 16 pins) Primary Application Laptop Battery Charging & Power Path Management Key Topology Synchronous Buck (Step-Down) Switching Controller Pinout Configuration (QFN-16)

If a laptop detects the AC charger but refuses to charge the battery, scope the SMCLK and SMDAT pins. Missing waveforms or flat lines indicate an issue with the host controller firmware or broken pull-up resistors, preventing the 8682L from executing power commands.

The 8682L serves as an intelligent power management and battery charging solution. Unlike traditional passive chargers, it employs the System Management Bus (SMBus) protocol to dynamically converse with the host system's smart battery pack and Super I/O (embedded controller). Hybrid Power Boost Technology A user on RepairLap asked this exact question,

Features logic for motor control (in industrial applications) and safety interlocks with precision.

This article is based on information from O2Micro press releases, component distributor listings, and real‑world repair documentation. Specifications are subject to change without notice by the manufacturer. Always refer to the official datasheet provided by O2Micro for final design decisions.

Continually measures current via the sensing pins to halt operation in short-circuit scenarios.

If your 8682L-based circuit is not working, check these typical failure points:

If you cannot source the 8682L or its datasheet, consider these direct replacements (check pinout first):