SC8815
High-efficiency 3A switching battery charger with I2C interface and power path management for fast charging applications
Product Overview
Description
The SC8815 is a high-efficiency synchronous switching battery charger designed for fast charging applications. It supports up to 3A charge current with excellent efficiency, making it ideal for smartphones, tablets, and power banks.
The device features integrated power path management that allows the system to operate immediately when external power is applied, even with a deeply discharged battery. The I2C interface provides flexible control of charging parameters.
Comprehensive protection features including input over-voltage, battery over-voltage, thermal regulation, and safety timer ensure safe and reliable charging operation.
Product Series
SC
Primary Application
Smartphones
Key Features
- 3A synchronous switching charger
- Power path management
- I2C programmable interface
- Up to 95% efficiency
- Input voltage up to 12V
- Comprehensive protection features
- QFN-24 package
Specifications
| Charge Current | Up to 3A |
|---|---|
| Charge Voltage | 4.2V ±0.5% |
| Input Voltage | 4.5V to 12V |
| Efficiency | Up to 95% |
| Package | QFN-24 |
Applications
Smartphones
Electronic system design
Tablets
Electronic system design
Power banks
Electronic system design
Portable media players
Electronic system design
FAE Expert Insights
"The SC8815 is my top recommendation for fast charging applications. The 3A capability and 95% efficiency make it perfect for modern smartphones. The power path management is a key feature - it allows immediate system operation when USB is connected, even with a dead battery. The I2C interface gives full control over charging parameters. I've used this part in multiple smartphone designs with excellent results. Thermal performance is good thanks to the QFN package with exposed pad. Key design tips: use a quality inductor (4.7μH), place input capacitors close to the IC, and ensure adequate copper area for heat dissipation. The integrated power path eliminates the need for external load switches, reducing BOM cost."
High-efficiency 3A switching charger with power path management for fast charging
— Michael Chen, BeiLuo
Frequently Asked Questions
What is the efficiency of SC8815?
The SC8815 achieves up to 95% efficiency at optimal operating conditions. Efficiency varies with input voltage, battery voltage, and charge current. Typical efficiency is 90-95% for most operating conditions. The high efficiency minimizes heat generation and allows fast charging without thermal issues.
Contact LiTong for efficiency analysis and thermal design guidance.
How does power path management work?
Power path management in SC8815 allows the system to operate from input power while simultaneously charging the battery. When external power is applied, the system draws power from the input source rather than the battery. This allows immediate system operation even with a deeply discharged battery. The charger manages power distribution between the system load and battery charging.
Contact LiTong for power path architecture design guidance.
What inductor should I use with SC8815?
For SC8815, use a 4.7μH inductor with saturation current rating of at least 5A. Recommended inductors include Coilcraft XAL4030-472, Wurth WE-LHMI-744373491047, or similar. The inductor should have low DCR (<50mΩ) for good efficiency. Shielded inductors are recommended to minimize EMI.
Contact LiTong for inductor selection and component recommendations.
FAQ 4 for SC8815?
This is additional FAQ information for SC8815. Contact LiTong for detailed technical support and application guidance. For more detailed information and application-specific guidance, please contact LiTong's technical support team. Our experienced FAEs can provide comprehensive assistance with product selection, design optimization, troubleshooting, and production support. LiTong is committed to helping you achieve the best results with SouthChip products in your applications. We offer reference designs, evaluation kits, and detailed documentation to accelerate your development cycle.
Contact LiTong for technical support.
FAQ 5 for SC8815?
This is additional FAQ information for SC8815. Contact LiTong for detailed technical support and application guidance. For more detailed information and application-specific guidance, please contact LiTong's technical support team. Our experienced FAEs can provide comprehensive assistance with product selection, design optimization, troubleshooting, and production support. LiTong is committed to helping you achieve the best results with SouthChip products in your applications. We offer reference designs, evaluation kits, and detailed documentation to accelerate your development cycle.
Contact LiTong for technical support.