The is a single-channel capacitive touch sensor IC. It is designed to replace traditional mechanical buttons with a capacitive pad. The device integrates a voltage regulator, oscillator, and capacitive detection circuit. It is widely used in consumer electronics, home appliances, and industrial control panels.
Introduction The is a specialized power management integrated circuit (PMIC). It serves as a highly efficient synchronous buck (step-down) DC-DC converter. Engineers widely use this IC in consumer electronics, industrial automation, and automotive sub-systems. It efficiently regulates voltage from a higher input source down to a stable, lower output voltage.
When working with ambiguous parts like the "8681L," a thorough approach is required beyond just finding a datasheet.
(System Management Bus) protocol, allowing programmable control by the system's microcontroller. Applications Portable Computers
Follow Lead-Free reflow curves (~250°C–260°C peak temperature) if using factory solder profiles. 8681l ic datasheet
: Dedicated differential pairs connected across low-value sense resistors to monitor both system input current and battery charge current.
: Prioritizes system load demands over battery charging to prevent adapter voltage sag.
The "8681L" part number's ambiguity reflects the realities of the electronics industry, where prefix letters denote manufacturers and product families. Two distinct components dominate:
: Designed for minimal idle draw to preserve battery life in portable devices. Applications and Hardware Integration The is a single-channel capacitive touch sensor IC
The 8681L is typically housed in a compact, thermally enhanced SOP-8 (EP) or DFN package. Below is the standard pin layout and description. Pin Number Description BS
In laptop board-level diagnostics, the 8681L chip frequently features in failure pathways associated with liquid damage, power surges, or component aging. Technicians searching for the datasheet are typically trying to resolve specific power symptoms: Symptom 1: Laptop Runs on Battery but Won't Charge
[Isolate Main Power Supply] -> [Check VCC & Enable Pins] -> [Measure Sense Resistors] -> [Verify SMBus Lines]
The 8681L IC manages the delicate power balance between a system's AC wall adapter and its internal battery chemistry. It uses two high-side current sensors to dynamically track power requirements. It is widely used in consumer electronics, home
, often found under part numbers such as , is a specialized Integrated Circuit primarily used as a battery SMBus charge controller
Embedded thermal shutdown to prevent overheating during high-current charging cycles.
For further validation, components and replacement parts can be cross-verified via specialist suppliers listed on Veswin Electronics or MacFactory India .
✅ – Look for a second line or logo (manufacturer). ✅ Search the full marking – If the package is small, use "SMD code 8681L" on sites like Marking Codes or SMDParts.com . ✅ Consider alternatives – If this is for a regulator, comparator, or timer, common equivalents like LM393 , TLV1811 , or 78L05 may work. ✅ Use partial search – Try "8681" alone, but expect many false positives.
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