SC8103
Compact 2A synchronous buck converter with high efficiency and internal compensation for space-constrained applications
Product Overview
Description
The SC8103 is a compact synchronous buck converter delivering up to 2A output current. It features a wide input voltage range of 4.5V to 18V and achieves high efficiency across the load range.
The device uses internal compensation, simplifying design and reducing external component count. It automatically switches between PWM mode at heavy loads and PFM mode at light loads to maintain high efficiency.
Protection features include over-current protection, thermal shutdown, and input under-voltage lockout. The small SOT-23-5 package makes it ideal for space-constrained applications.
Product Series
SC
Primary Application
Set-top boxes
Key Features
- 2A synchronous buck converter
- Internal compensation
- Auto PFM/PWM switching
- Wide input voltage range
- High efficiency
- Small SOT-23-5 package
- Comprehensive protection
Specifications
| Input Voltage | 4.5V to 18V |
|---|---|
| Output Current | Up to 2A |
| Efficiency | Up to 94% |
| Switching Frequency | 500kHz |
| Package | SOT-23-5 |
Applications
Set-top boxes
Electronic system design
Industrial equipment
Industrial automation and control
Consumer electronics
Consumer electronics
FPGA/DSP power
Electronic system design
FAE Expert Insights
"The SC8103 is a great choice when you need a compact buck converter for moderate current applications. The 2A capability is sufficient for many system rails, and the SOT-23-5 package saves significant board space compared to larger packages. The internal compensation is a key advantage - no need to calculate external compensation components. Efficiency is good, typically 90-94% at rated load. The auto PFM/PWM switching maintains reasonable efficiency at light loads. I've used this part in set-top boxes and industrial applications with excellent results. Design tips: use a 4.7μH inductor, place input capacitor very close to the IC, and ensure adequate copper area for heat dissipation. Overall, this is a reliable, easy-to-use buck converter for space-constrained designs."
Compact 2A buck converter with internal compensation for easy design
— David Wang, BeiLuo
Frequently Asked Questions
What is the difference between SC8103 and SC8105?
The main differences are: SC8103 provides 2A output current in SOT-23-5 package without power-good indicator. SC8105 provides 3A output current in SOT-23-6 package with power-good indicator. SC8103 is more compact and lower cost for applications not requiring the extra current or power-good function.
Contact LiTong for converter selection based on your current requirements.
Does SC8103 require external compensation?
No, the SC8103 uses internal compensation, which simplifies design. The internal compensation is optimized for typical applications with ceramic output capacitors. This eliminates the need for external compensation resistors and capacitors, reducing component count and design complexity.
Contact LiTong for stability analysis and component selection.
FAQ 3 for SC8103?
This is additional FAQ information for SC8103. 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 4 for SC8103?
This is additional FAQ information for SC8103. 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 SC8103?
This is additional FAQ information for SC8103. 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.