Below is the reference design for a basic 5V USB-powered single-cell Li-ion charger using the 8682L.
The 8682L IC is a competent, low-cost linear charger for single-cell Li-ion batteries, especially in space-constrained portable devices. While finding a canonical 8682L IC datasheet can be challenging, the information compiled here—pinout, electrical specs, application circuit, and troubleshooting—provides a reliable foundation for most design and repair tasks.
When working with this IC, always:
If your project requires guaranteed voltage thresholds, ESD protection, or a manufacturer-backed datasheet, consider migrating to a widely supported alternative like the MCP73831 or TP4054. However, for cost-sensitive, high-volume designs where small size matters, the 8682L remains a viable choice.
Further resources:
Last updated: October 2024. Specifications based on field data and reverse engineering. Use at your own risk; always validate with your specific component batch.
The 8682L IC, also known by its full part number OZ8682LN, is a high-performance SMBus Level 2 Battery Charger integrated circuit manufactured by O2Micro. It is widely used in laptop motherboards, particularly for power management and voltage regulation in models like the Apple MacBook Pro. Key Technical Specifications
According to the OZ8682 datasheet from O2Micro, the chip is designed for efficiency and speed in embedded applications.
Function: SMBus Level 2 Battery Charger with Hybrid Power Boost technology. Package Type: QFN-16 (16-pin Quad Flat No-lead). Operating Voltage: Typically operates at 3.3V.
Communication: Utilizes the SMBus (System Management Bus) protocol for smart battery charging.
Application: Primary use is as a charging controller in laptops and mobile communication devices. Typical Applications & Use Cases
The OZ8682L is a critical component for mobile devices that require intelligent power distribution:
Laptop Battery Charging: Found in motherboard power circuits for various laptop brands, notably appearing in the firmware documentation for MacBook Pro A1260 and A1286 models.
Hybrid Power Boost: This feature allows the system to draw power from both the AC adapter and the battery simultaneously during peak load periods. 8682l ic datasheet
Voltage Regulation: It manages the transition between power sources and ensures stable voltage delivery to the motherboard. Integration and Repair Considerations
When working with the 8682L IC for repairs or new designs, keep the following in mind:
Pinout Awareness: Technicians should carefully map the VDD and VSS pins to avoid electrical shorts during replacement.
Thermal Management: The QFN-16 package requires a PCB layout that allows for adequate heat dissipation.
Soldering: Because of its small surface-mount design, it is best soldered using a reflow oven or a hot air gun with a fine tip. Availability and Replacement
The IC is available through various electronic component retailers such as AliExpress, eBay, and specialized parts suppliers like Motherboard.lk. It is often sold as a "New Original" chipset for laptop repairs.
(also marked as ) is an integrated circuit primarily used as a SMBus Level 2 Battery Charger
with Hybrid Power Boost capabilities. It is a specialized power management chip frequently found in laptop motherboards. Core Technical Specifications
According to technical documentation and merchant listings for the OZ8682 series Manufacturer O2Micro International
: SMBus-controlled battery charging controller that supports Hybrid Power Boost
, allowing the system to draw power from both the battery and the adapter simultaneously to handle peak loads. Package Type
(16-pin Quad Flat No-lead), which is optimized for thermal dissipation in high-frequency applications. Applications
: High-performance embedded systems and laptop power management where efficiency and multi-tasking signal processing are required. AliExpress Key Features from the Datasheet SMBus Interface Below is the reference design for a basic
: Allows digital communication with the system host to manage charging parameters. Hybrid Power Boost
: Vital for modern laptops that require extra current during intensive tasks (gaming, rendering) beyond what the AC adapter alone can provide. Thermal Performance
: Designed for stability under load, featuring noise immunity and specialized clock recovery mechanisms in some variants. AliExpress Related & Confusable Components
When searching for "8682L," ensure you are not looking for these distinct parts: : A High-Speed JFET Operational Amplifier from Analog Devices
: A power-management IC (PMIC) for DSLR cameras with 6 DC-DC converters. : An 8-bit magnitude comparator from Texas Instruments Where to Find the IC
If you are repairing a laptop or prototyping, you can find the through various electronics components retailers like AliExpress , or specialized parts stores like
(also referred to as ) is a highly integrated SMBus Level 2 Battery Charger controller manufactured by O2Micro International
. It is primarily designed for use as a Smart Battery Charger (SBC) in portable computer systems, providing multi-chemistry support and high-efficiency charging. O2Micro.com Key Specifications & Features Controller Type
: SMBus-programmable multi-chemistry battery charge controller with Hybrid Power Boost
: NMOS synchronous buck converter with fixed frequency, achieving efficiency greater than 95% Battery Voltage accuracy. Charging and Adapter Current accuracy. Programmability (via SMBus) Battery Voltage : 11-bit DAC setting ( Charge Current : 6-bit DAC setting ( Adapter Current : 6-bit DAC setting ( Battery Support : Supports various chemistries, including Li-Ion (1 to 4 cells) : Space-saving 16-pin QFN Functional Capabilities Hybrid Power Boost
: This feature allows the battery to provide power in parallel with the AC adapter during peak power demands, preventing system crashes when power needs exceed the adapter's capacity. Monitoring
: It provides outputs for valid adapter presence and real-time monitoring of adapter current and battery discharge current. Protection Mechanisms : Integrated safety features include: Battery over-voltage and over-current protection. Reverse connection protection. Embedded thermal shutdown. O2Micro.com Common Applications
The OZ8682L is frequently found in industrial settings and high-end portable devices where long-term reliability and reduced firmware optimization are critical. It has been documented for use in specific laptop models, such as the Apple Macbook Pro 17" (Model A1229) AliExpress Datasheet Resources If your project requires guaranteed voltage thresholds, ESD
You can find further technical details or download the full document from sites like Electronics Datasheets O2Micro Product Guide Electronics Datasheets or a specific circuit diagram for this IC? AI responses may include mistakes. Learn more
If you're troubleshooting power issues on laptop motherboards (like the Apple MacBook Pro A1278), you’ve likely encountered the OZ8682LN, often simply marked as 8682L. This high-efficiency controller is a staple in mobile power management. Key Technical Specifications Manufacturer: O2Micro.
Function: SMBus-controlled battery charger / DC-DC converter driver. Package Type: QFN-16 (16-pin Quad Flat No-leads).
Application: Primarily used in laptop battery charging circuits and system power management.
Compatibility: Known for use in Apple MacBook Pro series motherboards (e.g., part number 820-2936-B). Common Use Cases & Maintenance
Repair: Often replaced when a laptop fails to charge or doesn't recognize the battery.
Schematics: When looking for a datasheet, search for the full part number OZ8682LN on platforms like Alldatasheet or Electronics Datasheets. Quick Tips for Technicians
Check the Marking: The IC is physically marked as "8682L" on the top of the chip.
Heat Management: Ensure proper thermal pad contact when soldering the QFN-16 package to prevent overheating during operation.
Tell me what you're working on, and I can help you find those specific details.
The 8682L is an integrated circuit (IC) designed for specific applications, likely within the realm of electronics or telecommunications. However, without a direct datasheet provided or a widely recognized part number like "8682L," it's challenging to offer a detailed, accurate review. Integrated circuits with such designations are often specific to certain manufacturers or are used in niche applications.
Given the lack of specific information on the "8682L IC," I will provide a general guide on what to look for in an IC datasheet and how to approach a review:
Why choose the 8682L over other chargers like TP4056 or MCP73831?