Product description
The Qualcomm SMB-1351-0-49CWLNSP-TR-02-0-03 is an advanced battery management IC designed to handle the complex needs of charging and monitoring lithium-ion and lithium-polymer batteries. It is engineered to deliver reliable performance while ensuring safety and efficiency in various electronic devices.
Battery Management: The SMB-1351-0-49CWLNSP-TR-02-0-03 employs a constant current/constant voltage (CC/CV) charging approach, which is essential for maintaining battery health and performance. The IC regulates the charging voltage to a standard 4.2V per cell, a typical requirement for Li-ion batteries, while offering flexibility in charging current to accommodate different battery sizes and requirements.
Protection Mechanisms: The IC integrates multiple protection features to ensure both safety and longevity of the battery and device:
Overcharge Protection: This feature prevents the battery from charging beyond its maximum rated voltage, avoiding potential damage and ensuring safety.
Over-discharge Protection: Prevents the battery from discharging below safe voltage levels, which could otherwise harm the battery.
Over-current Protection: Protects the system from excessive current flow that could lead to overheating or damage.
Short-circuit Protection: Guards against potential short circuits, which could cause significant damage to the IC or battery.
Thermal Management: To address thermal concerns, the SMB-1351-0-49CWLNSP-TR-02-0-03 includes a thermal shutdown feature. This mechanism activates if the IC’s temperature rises above safe limits, preventing overheating and protecting the IC and surrounding components from heat-related damage.
Communication and Integration: The I2C interface provided by the SMB-1351-0-49CWLNSP-TR-02-0-03 enables seamless communication with external controllers, allowing for real-time battery monitoring and management. This feature is crucial for applications requiring dynamic adjustments to charging parameters based on real-time data.
Compact and Versatile Design: The SMB-1351-0-49CWLNSP-TR-02-0-03 is housed in a compact QFN package, making it suitable for use in space-constrained environments. Its design is ideal for integration into devices such as smartphones, tablets, and wearables, where efficient battery management in a small footprint is essential.
Specification parameters
Input Voltage Range:
Typical Range: 3.5V to 5.5V, accommodating a wide range of power sources for flexibility in various applications.
Charging Current:
Programmable Charging Current: Supports adjustable charging currents, typically up to 1.5A or more, depending on the specific requirements of the application and battery.
Charge Voltage Regulation:
Regulation Voltage: Typically set to 4.2V per cell, with options for adjustment to suit different battery types and specifications.
Protection Features:
Overcharge Protection: Prevents the battery from charging beyond its maximum safe voltage.
Over-discharge Protection: Avoids excessive discharge that could potentially damage the battery.
Over-current Protection: Protects against excessive current that could harm the IC or the battery.
Short-circuit Protection: Guards against short circuits, which could otherwise lead to damage.
Communication Interface:
I2C Interface: Facilitates real-time data exchange with external controllers, allowing for comprehensive battery monitoring and management.
Thermal Management:
Thermal Shutdown: Activates when the IC exceeds safe temperature limits, protecting the device from overheating.
Package Type:
Package: QFN (Quad Flat No-Lead), offering a compact and efficient form factor suitable for modern electronic designs.
