8681l Ic Datasheet -
Date: March 23, 2026.
The OZ8681L (often marked as 8681L) is a high-performance Battery SMBus Charge Controller IC primarily used in laptop power management systems, such as the Lenovo Yoga 2 Pro. It is commonly found in a QFN-16 package and is designed to manage Lithium Polymer battery cells safely and efficiently. Key Specifications & Features Function: Battery SMBus Charge Controller.
Package Type: QFN-16 (Quad Flat No-lead), which requires precise soldering techniques.
Compatibility: Often interchangeable or used alongside variants like the OZ8681LN, OZ8682L, and OZ8618LN.
Protection: Includes safeguards against incorrect voltage, short circuits, and internal overheating.
Application: Optimized for high-fidelity audio performance in some compact form factors, offering a lower noise floor compared to alternatives like the RT6338B. Implementation & Troubleshooting Tips
To ensure the IC operates correctly in your design or repair, follow these technical guidelines:
Proper Soldering: Use a stencil to apply solder paste evenly across the pads to avoid shorts. QFN components are best handled using a reflow oven or a hot plate for even heating.
Decoupling Capacitors: Ensure sufficient decoupling capacitors are used as per the 8681L datasheet recommendations; lack of these can lead to high failure rates in some projects.
Verification: Before soldering, perform electrical testing with a multimeter to check resistance between pins. After installation, check for shorts or open circuits.
Package Markings: Verify the specific alphanumeric codes on the physical package to ensure batch traceability and avoid counterfeit parts.
Unlocking the Secrets of the 8681L IC Datasheet: A Comprehensive Guide
The 8681L IC is a highly versatile and widely used integrated circuit (IC) that has been a staple in the electronics industry for decades. As a crucial component in various applications, understanding the 8681L IC datasheet is essential for engineers, designers, and electronics enthusiasts alike. In this article, we will delve into the world of the 8681L IC, exploring its features, specifications, and applications, as well as provide a comprehensive guide to navigating its datasheet.
What is the 8681L IC?
The 8681L IC is a type of voltage regulator IC that is designed to provide a stable and regulated output voltage from an unregulated input voltage. It is a member of the 78L series of ICs, which are known for their high reliability, low dropout voltage, and high current capability. The 8681L IC is commonly used in a wide range of applications, including power supplies, voltage regulators, and electronic circuits.
Key Features of the 8681L IC
The 8681L IC boasts an impressive array of features that make it a popular choice among designers and engineers. Some of its key features include:
Navigating the 8681L IC Datasheet
The 8681L IC datasheet is a comprehensive document that provides detailed information about the IC's specifications, features, and applications. Here are some key sections to focus on when navigating the datasheet:
Specifications of the 8681L IC
Here are some key specifications of the 8681L IC:
Applications of the 8681L IC
The 8681L IC is a versatile component that can be used in a wide range of applications, including:
Conclusion
In conclusion, the 8681L IC is a highly versatile and widely used IC that is essential for various applications. Understanding the 8681L IC datasheet is crucial for designers and engineers who want to unlock the full potential of this IC. By navigating the datasheet and understanding the IC's features, specifications, and applications, designers and engineers can create innovative and reliable electronic circuits. Whether you're a seasoned engineer or an electronics enthusiast, the 8681L IC datasheet is an essential resource that will help you unlock the secrets of this amazing IC.
Additional Resources
For more information on the 8681L IC datasheet, we recommend the following resources:
By following this guide and exploring the 8681L IC datasheet, you'll be well on your way to unlocking the secrets of this versatile and widely used IC.
The 8681L IC (also known as the OZ8681L or OZ8681LN) is a specialized battery SMBus charge controller chip primarily used in laptop power management systems and vintage mobile communication hardware.
Below is a story woven from its technical specifications and typical "life" in a circuit. The silent Guardian of the Yoga 2 Pro
In the crowded skyline of a Lenovo Yoga 2 Pro motherboard, the 8681L sits in its 16-pin QFN package, a compact square measuring just a few millimeters. To the naked eye, it’s just another black speck, but to the laptop’s 7.4V Lithium Polymer battery, it is the ultimate gatekeeper. 8681l ic datasheet
Its day begins the moment a user plugs in the AC adapter. The 8681L instantly wakes up to perform its primary duty: presiding over the SMBus (System Management Bus). It communicates constantly with the battery, asking for its status, temperature, and current charge level. A Life of Precision and Protection
The 8681L isn't just a messenger; it’s a bodyguard. According to its design "story," it must constantly watch for three "villains" that could destroy the device:
Incorrect Voltage: If the power brick starts pushing too much, the 8681L shuts the gates.
Short Circuits: It can detect a short and disconnect the path in microseconds.
Internal Overheating: Designed to work up to 85°C, it monitors its own thermal profile to prevent a meltdown. The Nokia Legacy
In a different chapter of its history, variants of the 8681L were the heart of the iconic Nokia 8800 series. In those luxury phones, the IC acted as a dual-band GSM signal processor, handling 900 MHz and 1800 MHz frequencies to ensure that a call placed in London would still connect in Singapore. The Repairman's Quest
Today, the 8681L is most often the protagonist of a repair technician's story. When a laptop refuses to charge or suddenly dies when the plug is pulled, a technician often looks for this specific QFN-16 chip. They consult the datasheet to check the "decoupling capacitors"—tiny components that, if missing or faulty, can cause the 8681L to fail, bringing the entire system to a halt.
The 8681L is a mature, reliable, and predictable LNA for L-band applications. Its "magic" lies in the balance of 10 mA current and 27 dB gain. You won't find a 5V part with that gain-to-current ratio anywhere else.
Treat the datasheet with respect: Pay attention to the layout notes, over-engineer the power supply filtering, and use quality passives. Do that, and the 8681L will give you a noise floor low enough to hear satellites whispering from 20,000 km away.
Have you used the 8681L in a design? Did you struggle with oscillations? Let me know in the comments below.
The Go to product viewer dialog for this item. (often marked as 8681L) is a highly integrated, SMBus-programmable battery charge controller manufactured by O2Micro. It is primarily used as a Smart Battery Charger (SBC) in notebook and netbook computer systems to manage the complex charging requirements of multi-chemistry batteries. Core Functionality & Architecture
The IC operates using an NMOS synchronous buck topology, 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.
Dynamic Power Allocation: When the system is powered on, the 8681L monitors the AC adapter's capacity and allocates all remaining current not used by the system to charge the battery.
High Accuracy: It features precise monitoring with ±0.5% battery voltage accuracy and ±3% accuracy for both charging and adapter current. Key Technical Specifications Specification Package 16-pin QFN (Quad Flat No-leads) Interface SMBus (System Management Bus) Level 2 compliant Battery Voltage Range 1.024V – 19.200V (11-bit DAC) Charging Current Range 128mA – 8.064A (6-bit DAC) Adapter Current Range 256mA – 11.008A (6-bit DAC) Operating Temperature -40°C to +105°C (Extended range) Safety & Protection Mechanisms
Designed for "smart battery systems" (SBS), the 8681L includes several hardware-level protection layers to prevent damage to the laptop or battery: Date: March 23, 2026
Over-voltage & Over-current: Built-in limits for both battery and adapter side.
Reverse Connection Protection: Safeguards against incorrectly installed batteries.
Thermal Protection: Embedded thermal shutdown to prevent overheating during high-current charging cycles.
Adapter Detection: Automatic detection of the AC adapter voltage and status. Typical Application Circuit
In a standard laptop motherboard, the 8681L connects to the System Management Bus to communicate with the Super I/O or EC (Embedded Controller). It uses two high-side current sensors—one to monitor the AC adapter input and another for the battery charge/discharge current. This allows it to output real-time analog signals representing the current levels to the system controller. Procurement Options If you are looking for replacement parts, the Go to product viewer dialog for this item.
is available through several specialized electronics retailers: MacFactory: Offers the IC for approximately ₹149. IC Chipset: Lists it for around ₹139.
Veswin Electronics: A source for bulk or hard-to-find components.
Are you planning to replace this IC on a specific laptop motherboard, or do you need the pin-by-pin voltage map for diagnostic testing?
OZ8681L O2MICRO Integrated Circuits (ICs) - Jotrin Electronics
The most common component confused with this marking is the TP4056.
Datasheets are documents that provide detailed specifications, characteristics, and applications for a particular integrated circuit. They are essential for engineers and designers when selecting and implementing ICs in electronic circuits.
If your chip is not related to battery charging, check these alternatives:
CRT Monitor Deflection:
The part number string "8681L" is ambiguous. Two main families appear in datasheet searches:
Below is a structured guide to help you identify which device you mean, find datasheets, and use the IC correctly. Navigating the 8681L IC Datasheet The 8681L IC