Product description
The Qualcomm SMB-1351-0-49CWLNSP-HR-01-0-01 is a high-performance battery management integrated circuit designed for precise control and monitoring of lithium-ion and lithium-polymer batteries. It is tailored to provide optimal performance and safety in a compact package, making it suitable for a range of modern electronic devices.
Battery Management: The SMB-1351-0-49CWLNSP-HR-01-0-01 uses a constant current/constant voltage (CC/CV) charging methodology, essential for maintaining battery health and performance. It regulates the charging voltage to a standard 4.2V per cell and supports adjustable charging currents, typically up to 1.5A or more. This flexibility ensures compatibility with various battery sizes and types, optimizing charging efficiency and safety.
Protection Mechanisms: The IC is designed with several protective features to ensure safe operation:
Overcharge Protection: Prevents the battery from being charged beyond its maximum safe voltage, avoiding potential overcharge conditions that could damage the battery.
Over-discharge Protection: Protects the battery from discharging below its safe minimum voltage, preventing possible damage and extending battery life.
Over-current Protection: Limits the current to prevent overheating and damage to both the IC and the battery.
Short-circuit Protection: Guards against short circuits that could cause significant damage to the IC or battery.
Thermal Management: Effective thermal management is critical for reliable operation. The SMB-1351-0-49CWLNSP-HR-01-0-01 features thermal shutdown functionality, which activates if the IC’s temperature exceeds safe operating limits. This protection ensures that the IC and device remain stable and protected from overheating.
Communication and Integration: The I2C communication interface allows the SMB-1351-0-49CWLNSP-HR-01-0-01 to interface with external microcontrollers or processors. This enables real-time monitoring and adjustment of battery status and charging parameters, offering enhanced control and flexibility for battery management.
Compact Design: Encased in a MQFN package, the SMB-1351-0-49CWLNSP-HR-01-0-01 is well-suited for applications where space is limited. Its compact form factor makes it ideal for integration into small electronic devices such as smartphones, tablets, and wearables, where efficient space utilization and effective battery management are essential.
For additional technical information, including electrical characteristics, pin configurations, and application notes, refer to the official datasheet and technical documentation provided by Qualcomm.
Specification parameters
Input Voltage Range:
Range: 3.5V to 5.5V, providing versatility to work with different power sources and meet a variety of application requirements.
Charging Current:
Adjustable Charging Current: Typically supports currents up to 1.5A or higher, allowing for customization based on specific battery and application needs.
Charge Voltage Regulation:
Regulation Voltage: Generally set to 4.2V per cell, which is standard for Li-ion batteries. The IC also offers options for adjustment to accommodate different battery specifications.
Protection Features:
Overcharge Protection: Prevents the battery from exceeding its maximum safe voltage during charging.
Over-discharge Protection: Protects the battery from discharging below safe voltage levels, which could lead to damage.
Over-current Protection: Limits current flow to prevent overheating and damage to the IC and battery.
Short-circuit Protection: Provides a safeguard against short circuits that could cause significant damage.
Communication Interface:
I2C Interface: Facilitates real-time data exchange with external controllers, enabling effective battery monitoring and management.
Thermal Management:
Thermal Shutdown: Activates if the IC’s temperature exceeds safe operating thresholds, protecting against overheating.
Package Type:
Package: MQFN (Micro Quad Flat No-Lead), offering a compact and efficient form factor suitable for space-constrained applications.
