8682l Ic | Datasheet ((full))

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If you're troubleshooting power issues on laptop motherboards (like the Apple MacBook Pro A1278), you’ve likely encountered the , often simply marked as 8682L . This high-efficiency controller is a staple in mobile power management. Key Technical Specifications Manufacturer: O2Micro.

The 8682L IC plays a vital role across several demanding consumer electronic architectures:

He picked up his coffee, cold now, and toasted the screen. "Good morning, 8682L."

| Feature | Description | | :--- | :--- | | | Enables battery to provide power in parallel with the AC adapter, allowing the use of smaller, lower‑cost adapters | | High Efficiency | >95% power conversion efficiency in synchronous NMOS topology | | NMOS Synchronous Topology | Fixed frequency operation for consistent performance | | High Accuracy | ±0.5% battery voltage, ±3% charging current, ±3% adapter current accuracies | | SMBus Programmable | Simplified SMBus Level 2 control of battery voltage, charge current, and adapter input current | | Wide Voltage Range | 11‑bit DAC battery voltage setting (1.024 V to 19.200 V) | | Programmable Current Limits | 6‑bit DAC charge current (128 mA to 8.064 A); 6‑bit DAC adapter current (256 mA to 11.008 A) | | Dual High‑Side Current Sensing | Separate sense resistors for charge and discharge monitoring | | Automatic AC Adapter Detection | Outputs valid adapter presence signal | | Dynamic Current Allocation | Remaining adapter current not used by the system is automatically allocated to charging | | Multi‑Chemistry Support | Charges batteries of various chemistries, including Li‑Ion with 1 to 4 cells in series | | 16‑pin QFN Package | Space‑saving 3×3 mm QFN (Quad Flat No‑leads) | | Comprehensive Protection | Built‑in battery over‑voltage, over‑current, reverse connection protection, and embedded thermal shutdown | 8682l ic datasheet

The 8682L IC comes in a 16-pin QFN package. While exact pin functions are detailed in the full OZ8682L datasheet , a typical configuration for an O2Micro charger includes: Receives the DC input voltage.

If you are looking to share information about this IC on a platform like LinkedIn, a technical blog, or a forum, here is a professional draft:

| Symptom | Likely Cause | Solution | |--------------------------------------|-----------------------------------------------|----------------------------------------------| | Charging current too low | Rprog too high, or thermal foldback active | Reduce Rprog; improve cooling | | Charging never completes (red LED stays on) | Battery voltage won't reach 4.2V (old cell) or CV loop unstable | Replace battery; add 1µF at BAT pin | | Both LEDs off with VCC present | VCC < 4.3V or IC damaged | Check USB cable; replace IC | | IC gets extremely hot at 100mA | VCC > 6.5V or BAT shorted to GND | Reduce input voltage; check soldering | | Green and red LEDs both on | Fault condition (likely overvoltage or overtemperature) | Cycle power; measure VCC and battery voltage| | Battery drains when USB unplugged | Reverse leakage through VCC pin (rare) or external path | Add Schottky (BAT -> VOUT for load) |

Lead times vary by supplier. Some distributors maintain stock and offer same‑day shipping, while others may have lead times of several weeks. Always check with your preferred distributor for current availability. Tell me what you're working on, and I

What sets the OZ8682L apart is its combined with O2Micro’s proprietary Hybrid Power Boost technology, which permits the battery and the AC adapter to supply power in parallel under high load conditions. This capability enables engineers to use smaller, lower‑cost power adapters while maintaining system performance and battery charging efficiency.

If you are repairing a board containing the 8682L, check the following:

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Without the official datasheet, using the 8682L in a design is risky. Key parameters that are only found in the datasheet include: Key Technical Specifications Manufacturer: O2Micro

: Acts as a battery charge controller that communicates via the SMBus protocol to manage multi-cell battery charging.

Bootstrap pin powering the high-side MOSFET gate driver for buck-regulation. UGATE

The 16-pin layout is highly optimized to minimize external component counts. While minor differences may occur depending on motherboard implementations, a standard SMBus Level 2 QFN-16 charging IC layout consists of the following functional pins: Pin Number Description / Functional Purpose DCIN Main DC power input from the external AC adapter. 2 ACIN

SMBus clock lines for synchronized communication with the host EC (Embedded Controller). SMDATA