SC5328
Intelligent power path management IC with automatic source selection and ideal diode operation for portable devices
Product Overview
Description
The SC5328 is a power path management IC that provides intelligent control of power flow between USB/adapter input, battery, and system load. It automatically selects the appropriate power source based on availability and priority.
The device features an ideal diode controller that provides low-loss power path from battery to system when external power is not available. When external power is connected, it seamlessly switches to external power while charging the battery.
Integrated protection features include input over-voltage protection, reverse blocking, and current limiting. The SC5328 simplifies power management design in portable devices.
Product Series
SC
Primary Application
Smartphones
Key Features
- Automatic power source selection
- Ideal diode operation
- Seamless source switching
- Integrated battery charger
- Input over-voltage protection
- Reverse blocking
- Current limiting
- I2C interface
Specifications
| Input Voltage | 4.5V to 5.5V |
|---|---|
| System Current | Up to 2.5A |
| Charge Current | Up to 1.5A |
| Dropout Voltage | <50mV |
| Package | QFN-16 |
Applications
Smartphones
Electronic system design
Tablets
Electronic system design
Power banks
Electronic system design
Portable media players
Electronic system design
Handheld instruments
Electronic system design
FAE Expert Insights
"The SC5328 is a well-designed power path management IC that simplifies portable device power architecture. The automatic source selection works reliably - when USB is connected, it powers the system and charges the battery; when USB is removed, it seamlessly switches to battery without glitching the system. The ideal diode function has very low dropout (<50mV), maximizing battery runtime. The integrated 1.5A charger is sufficient for most single-cell applications. I2C interface allows host control of charging parameters and monitoring. One nice feature is the input current limiting which prevents overloading weak USB sources. The QFN-16 package has good thermal performance for the power levels. Overall, this is a good integrated solution that replaces multiple discrete components."
Integrated power path management with automatic source selection and charging
— Michael Chen, BeiLuo
Frequently Asked Questions
How does automatic source selection work?
The SC5328 automatic source selection: (1) Detection - Continuously monitors USB/adapter input voltage. (2) Threshold - When input voltage exceeds valid threshold (typically 4.3V), external power is considered valid. (3) Switching - Seamlessly switches system power from battery to external source. (4) Prioritization - External power always prioritized over battery when available. (5) Battery charging - When external power valid, battery is charged while system is powered. (6) Fallback - If external power removed or invalid, immediately switches back to battery. (7) Glitch prevention - Controlled switching prevents voltage glitches on system rail. This automatic operation requires no host intervention, simplifying software design.
Contact LiTong for power path architecture and source selection design.
What is the price of SC5328?
Pricing for SC5328 depends on order volume: (1) Sample pricing - Contact LiTong for sample pricing. (2) Volume pricing - Tiered pricing structure with discounts at 1K, 10K, 100K, and higher volumes. (3) Distribution pricing - As an authorized SouthChip distributor, LiTong offers competitive pricing with flexible terms. (4) Price stability - SouthChip maintains stable pricing with minimal fluctuations. (5) Alternative options - LiTong can suggest pin-compatible alternatives if cost optimization is needed. Contact LiTong sales for formal quotations with your forecast volumes and delivery requirements.
Contact LiTong sales for formal pricing quotations.
What is the lead time for SC5328?
Lead time for SC5328: (1) Stock items - 1-2 weeks for items in LiTong inventory. (2) Standard lead time - 8-10 weeks typical for non-stock items. (3) Large orders - Contact LiTong for scheduling and allocation. (4) Expedited delivery - Rush orders may be accommodated for urgent requirements. (5) Long-term agreements - Schedule agreements available for high-volume customers. LiTong maintains safety stock of popular SouthChip products to support quick-turn requirements. Contact LiTong with your delivery requirements for specific lead time commitments.
Contact LiTong for current lead times and delivery scheduling.
Does SC5328 support RoHS compliance?
Yes, SC5328 is fully RoHS compliant: (1) RoHS 6/6 compliant - Contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE. (2) Halogen-free - Available in halogen-free versions upon request. (3) REACH compliant - Meets EU REACH regulations for chemical substances. (4) Conflict-free - Sourced from conflict-free suppliers. (5) Environmental certifications - Full material declarations available. (6) Green packaging - Compliant with environmental packaging requirements. SouthChip is committed to environmental compliance across all products. Compliance certificates and material declarations are available from LiTong upon request.
Contact LiTong for RoHS certificates and material declarations.
FAQ 5 for SC5328?
This is additional FAQ information for SC5328. 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.