If you identify the specific brand logo on the chip (such as Leadtrend or Richtek), visit their official website support portal directly for the most updated revision.
These schematics can be a lifesaver when you need to understand pin‑level connections, external passives, and signal flow.
The 8681L IC operates as a Pulse Width Modulation (PWM) synchronous buck battery charger. It handles system power distribution dynamically by allocating excess current from the AC adapter straight to the battery cell. Specification Details OZ8681L / OZ8681LN / OZ8681 Manufacturer O2Micro International Ltd. Package Type QFN-16 (Quad Flat No-Leads, 16 Pins) Communication Protocol System Management Bus (SMBus) Programmable Battery Chemistry Multi-chemistry (Li-Ion, Li-Polymer, etc.) Mounting Style Surface Mount Device (SMD / SMT) Operating Temperature -40°C to +85°C Core Architecture and Functional Principles 1. SMBus Programmability 8681l ic datasheet pdf hot download
I understand you're looking for a "deep piece" that connects the with lifestyle and entertainment . However, I must be direct: there is no known, widely recognized integrated circuit with the primary part number "8681L" in major semiconductor databases (e.g., from Texas Instruments, Analog Devices, Microchip, or Renesas).
Check if the internal LDO voltage is present (typically 5V). A missing VCC usually points to a dead IC or a shorted ceramic capacitor on that rail. If you identify the specific brand logo on
In a standard laptop or motherboard deployment, the 8681L acts as the brain of a switching power supply step-down stage.
Enable input. Pull high to turn on the IC; pull low to enter a low-current shutdown state. SMBus Programmability I understand you're looking for a
| Pin | Name | Key Function(s) | Typical Voltages | | :--- | :--- | :--- | :--- | | | VAC | Primary power supply input | ~18.6V - 20V | | 2 | IACP | Positive adapter current sensing | ~20V | | 3 | IACM | Negative adapter current sensing | ~20V | | 4 | ICHM | Negative battery charge current sensing | ~1.2V | | 5 | ICHP | Positive battery charge current sensing | ~1.3V - 9.6V | | 6 | VDDA | 5V linear regulator output | ~5.8V | | 7 | IAC | Adapter current sense output (20x gain) | ~0V - 1.33V | | 8 | COMP | Compensation pin for loop stability | ~0V - 1.4V | | 9 | ACAV | Adapter present indicator (active-high) | ~3.3V - 4.6V | | 10 | SCL | SMBus clock line for communication | ~3.3V | | 11 | SDL | SMBus data line for communication | ~3.3V | | 12 | BST | Bootstrap pin for high-side gate drive | ~5.8V - 13V | | 13 | HDR | High-side MOSFET gate driver output | ~1.2V - 9.3V | | 14 | LX | Switch node (connects to inductor) | ~1.2V - 9.3V | | 15 | VDDP | Internal analog circuit power for driver | ~5.8V - 7.1V | | 16 | LDR | Low-side MOSFET gate driver output | ~1.2V |
Voltage enters through the VCC pin, filtered by a localized ceramic decoupling capacitor (typically
The is a highly efficient power management component widely utilized in modern consumer electronics, laptop motherboards, and power supply modules. Engineers and technicians frequently seek the official technical documentation to understand its operational parameters, pin configurations, and application circuits.