Product description
The Qualcomm SMB-1351-0-49CWLNSP-TR-02-0-11 is an advanced battery management IC engineered to deliver reliable and efficient charging and monitoring for lithium-ion and lithium-polymer batteries. This device is designed to meet the demands of modern electronic devices, offering a range of features that ensure both performance and safety.
Battery Management: The SMB-1351-0-49CWLNSP-TR-02-0-11 utilizes a constant current/constant voltage (CC/CV) charging approach, which is essential for maintaining battery health and performance. It regulates the charging voltage to a standard 4.2V per cell and supports adjustable charging currents to suit various battery sizes and requirements. This ensures that the battery is charged safely and efficiently, maximizing its lifespan.
Protection Mechanisms: Safety is a primary concern for this IC. It includes several protection features to prevent potential damage:
Overcharge Protection: This feature prevents the battery from exceeding its maximum safe voltage during charging, thereby avoiding potential overcharge conditions.
Over-discharge Protection: Ensures the battery is not discharged below safe voltage levels, which could otherwise lead to battery damage.
Over-current Protection: Limits the current flow to safe levels, preventing overheating and potential damage to the IC and battery.
Short-circuit Protection: Provides a safeguard against short circuits, which could cause significant damage to the IC or battery.
Thermal Management: The SMB-1351-0-49CWLNSP-TR-02-0-11 includes advanced thermal management features to handle heat effectively. It features thermal shutdown, which activates if the IC’s temperature exceeds its safe operating limits. This helps to protect the IC and associated components from heat damage, ensuring reliable operation.
Communication and Integration: With its I2C communication interface, the SMB-1351-0-49CWLNSP-TR-02-0-11 allows for real-time interaction with external microcontrollers or processors. This facilitates detailed monitoring of battery status, including charge levels and health metrics, and enables dynamic adjustments to charging parameters based on real-time data.
Compact and Versatile Design: The IC is packaged in a compact QFN package, which is ideal for use in space-constrained environments. This makes it suitable for integration into portable devices such as smartphones, tablets, and wearables, where efficient battery management is critical within a compact footprint.
Specification parameters
Input Voltage Range:
Typical Range: 3.5V to 5.5V, which provides flexibility for different power sources and applications.
Charging Current:
Programmable Charging Current: Supports adjustable charging currents, typically up to 1.5A or more, depending on the specific application and battery requirements.
Charge Voltage Regulation:
Regulation Voltage: Typically set to 4.2V per cell, with options for adjustment to accommodate different battery types and requirements.
Protection Features:
Overcharge Protection: Prevents the battery from charging beyond its maximum safe voltage.
Over-discharge Protection: Protects the battery from excessive discharge that could cause damage.
Over-current Protection: Safeguards against excessive current that could potentially harm the IC or the battery.
Short-circuit Protection: Provides protection against short circuits, which could damage the IC or battery.
Communication Interface:
I2C Interface: Facilitates real-time communication with external controllers, enabling effective monitoring and management of battery status.
Thermal Management:
Thermal Shutdown: Ensures that the IC shuts down if its temperature exceeds safe operating limits, protecting against overheating.
Package Type:
Package: QFN (Quad Flat No-Lead), which is compact and efficient for integration into space-constrained designs.
