Recipes straight to your inbox! Sign up
Recipes straight to your inbox! Sign up
in laptop motherboards, including certain Apple MacBook Pro models. Core Specifications SMBus Level 2 Battery Charger with Hybrid Power Boost. Package Type: Most commonly found in a 16-pin QFN
What the board is exhibiting (e.g., completely dead system, charger not detected, or battery not charging)?
The is frequently mentioned as a possible alternative to the OZ8682L. However, compatibility is not guaranteed. Repair technicians have noted that the OZ8681L may have different internal configurations, and direct substitution can lead to unexpected behaviour.
For exact pin assignments, please refer to the official O2Micro OZ8682 datasheet. 8682l ic datasheet
Post-regulation of switching supplies, battery-powered equipment, audio/video analog rails, and 5V/3.3V microcontrollers.
To expedite power-replenishment timelines without risking component overstress, the device monitors total incoming power using its dual high-side current sensors. When the host system is operational but idle, the IC reallocates all leftover, unused current directly to the charging circuit. If system activity increases, the chip smoothly scales back battery charging down to the milliampere level, prioritizing system stability while achieving the shortest possible overall charge times. 📍 Pinout Configuration and Package Form Factor
: 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 . in laptop motherboards, including certain Apple MacBook Pro
The 8682L plays a critical role in system architecture by safely throttling power between the external AC adapter, the system load, and the Lithium-Ion (Li-ion) or Lithium-Polymer (Li-Po) battery pack. Its defining feature is the technology. This feature allows the battery to dynamically assist the AC adapter during brief periods of peak system load, preventing the laptop or device from shutting down due to adapter overcurrent limits. Specification Manufacturer O2Micro International Full Part Numbers OZ8682L, OZ8682LN, OZ8682LN-C1-0-TR Communication Interface SMBus (System Management Bus) Level 2 compliant Package Type QFN-16 (Quad Flat No-lead, 16 pins) Primary Application Laptop Battery Charging & Power Path Management Key Topology Synchronous Buck (Step-Down) Switching Controller Pinout Configuration (QFN-16)
Ensure the logic level matches the EC requirements. If ACOK stays low, the Embedded Controller will refuse to switch over system power logic, locking out the power button.
At 1.5A output with a 5V input to 3.3V output, the power dissipation is: [ P_D = (V_IN - V_OUT) \times I_OUT = (5.0 - 3.3) \times 1.5 = 2.55W ] The is frequently mentioned as a possible alternative
Note: The information in this table has been compiled from distributor listings and manufacturer announcements. Due to the lack of a public datasheet, some values are best-estimates based on similar O2 Micro products.
| Parameter | Min | Typ | Max | Unit | Condition | |--------------------------|------|-----|------|-------|--------------------------------| | Input voltage (VCC) | 4.5 | 5.0 | 6.5 | V | | | Standby current | - | 55 | 100 | µA | VCC=5V, no battery | | Battery regulation voltage| 4.15 | 4.20| 4.25 | V | | | Trickle charge threshold | 2.8 | 2.9 | 3.0 | V | Battery voltage below this = trickle| | Trickle charge current | - | 10% | - | I_prog| | | Programmable charge current| 50 | - | 800 | mA | Set by Rprog | | PROG pin voltage (constant current mode)| 0.95| 1.0| 1.05 | V | | | Thermal foldback temp | - | 120 | - | °C | Reduces current | | Input overvoltage protection| 6.6 | 7.0| 7.2 | V | |
The datasheet details layered safety thresholds to safeguard hardware blocks against catastrophic failure modes:
: You can find replacement chips from electronic component retailers like Nexsys Techno or Motherboard.lk . Common Identification Marking Marking on Chip : Usually labeled as 8682L or OZ8682LN .