If your chip is not related to battery charging, check these alternatives:
CRT Monitor Deflection:
Do not rely solely on blog posts or forum threads. Use these primary sources:
Because "8681L" might be a proprietary marking or a batch code, verify the chip using these steps:
Recommendation: For 90% of users finding this post, you are working with a TP4056 charging module. You can download the standard TP4056 datasheet to proceed with your project.
[Disclaimer: Always verify the part number against your specific hardware before applying power. The information above is based on common industry marking patterns.]
, often found under part numbers such as , is a specialized Integrated Circuit primarily used as a battery SMBus charge controller 8681l ic datasheet
in laptop motherboards, particularly for Lenovo IdeaPad and Yoga series. WIT Computers
While it is most commonly a power management component for laptops, historical records also link the "8681L" designation to dual-band GSM communication modules used in early 2000s mobile devices. Key Technical Specifications
The following specifications are typically associated with the laptop battery controller variant found in modern repair contexts: : Battery SMBus Charge Controller / Power Management. Package Type : Available in (16-pin) or (24-pin) surface-mount packages. Operating Voltage : Typically operates within a range of 3.4V to 4.8V
, though it may support higher peak levels depending on the specific application. Thermal Range : Engineered for reliability up to Application
: Management of Lithium Polymer (Li-polymer) battery cells, including safeguards against incorrect voltage, short circuits, and internal overheating. WIT Computers Common Applications & Device Compatibility
This IC is a critical component for power regulation and charging logic in several consumer electronics: : Widely used in If your chip is not related to battery
models including the IdeaPad U410, Yoga 3 14 series, and ThinkPad X1 Carbon. Mobile Legacy : Historically integrated into the Nokia 8800 series to support GSM 900/1800 MHz frequency bands. Industrial/IoT
: Adaptable for smart metering, remote monitoring, and automotive telematics requiring stable voice or data transmission. Usage and Repair Considerations Installation
: Requires specialized SMD soldering tools due to its small QFN footprint. : Often available through component distributors like
, where it is sold as a replacement part for motherboard repairs. Security Features
8681L IC Datasheet (Simulated Document)
Device Type: Touch Sensor / Capacitive Proximity Detector IC Manufacturer: (Generic / Eval to TTP223 or Similar Architecture) Package: SOT-23-6 CRT Monitor Deflection:
While the datasheet gives a PCB footprint, it rarely gives a full layout guide. Here is the unspoken truth:
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.
A: No. Most 8681L variants have an absolute maximum input voltage of 6V or 6.5V. 12V will destroy it. Use a switching regulator (buck converter) instead.
The IC's body may only show "8681L" as a top marking due to limited space (especially on SOT-23). The full part number might be something like:
Pro tip: Use the top marking + package + pin count to reverse-search. For example, search "SOT-23-5 marking 8681L".