8682l Datasheet | HD |

Negative differential input pin for the battery charging current sense resistor. Analog Input

The tiny footprint of the QFN-16 structure demands careful circuit board routing. The central under the 8682L component must be generously soldered to a dedicated ground plane matrix using thermal vias. This minimizes parasitic inductance and acts as a vital heat sink during continuous high-rate charging phases. 2. Noise Suppression and Signal Integrity

Ensure the exposed center thermal pad directly connects to Pin 11 (GND) on the PCB layout board. 8682l Datasheet

: The center thermal pad of the QFN chip must be directly soldered to a solid copper fill on the PCB. Multiple thermal vias should bridge this pad to underlying internal ground planes to pull heat away efficiently.

: Manages the power path transition between the AC wall adapter and the internal Li-ion battery. Negative differential input pin for the battery charging

: Use a digital multimeter in Diode Test Mode with the red probe grounded. Check both UGATE and LGATE values. A shorted internal gate driver will show a readout near , validating that a complete chip replacement is mandatory.

(full part number ) is a specialized integrated circuit (IC) manufactured by O2Micro International . It is primarily designed as a SMBus Level 2 Battery Charger This minimizes parasitic inductance and acts as a

The OZ8682L relies on standard system management bus rules to exchange hardware telemetry with the host processor and smart battery pack. : SMBus Level 2 Compliant. Package Type : 16-pin QFN (Quad Flat No-leads).

Adapter Vin │ ├──[ Sense Resistor ]─── To ACP (Pin 5) / ACN (Pin 6) │ ┌───────┴───────┐ │ High-Side │ │ MOSFET (Q1) │ └───────┬───────┘ │ ├── PHASE (Pin 10) ───── [ Output Inductor ] ───┬─── To System & Battery │ │ ┌───────┴───────┐ ├─── To SRP (Pin 13) / SRN (Pin 14) │ Low-Side │ │ │ MOSFET (Q2) │ [ ] Sense Resistor └───────┬───────┘ │ │ ▼ Ground To Battery (+)

ceramic types) must sit immediate to the REF and VCC nodes to shield internal operational amplifiers from high-frequency switching hash. Troubleshooting and Verification