Product description
The Qualcomm SMB-1351-0-49CWLNSP-TR-01-0-17 is a highly integrated battery management IC designed to provide reliable and efficient charging and monitoring for lithium-ion and lithium-polymer batteries. It offers a range of features that make it suitable for modern electronic devices where battery performance and safety are critical.
Battery Management: The SMB-1351-0-49CWLNSP-TR-01-0-17 utilizes a constant current/constant voltage (CC/CV) charging approach, ensuring that the battery is charged in a controlled manner to maximize its lifespan. The IC maintains a regulated voltage of 4.2V per cell, which is a standard requirement for Li-ion batteries, and supports adjustable charging currents to accommodate different battery capacities and application needs.
Protection Mechanisms: Safety is a major focus of the SMB-1351-0-49CWLNSP-TR-01-0-17. It includes overcharge protection to prevent the battery from exceeding its safe maximum voltage, over-discharge protection to avoid damaging the battery through excessive discharge, and over-current protection to safeguard against high current levels that could harm the system. Additionally, short-circuit protection helps to prevent damage from short circuits, enhancing the overall safety of the device.
Thermal Management: To ensure the IC operates reliably in various conditions, it is equipped with thermal management features. If the IC’s temperature rises beyond safe operating levels, thermal shutdown is triggered to protect the device from overheating. This helps maintain the integrity and performance of both the IC and the surrounding components.
Communication and Integration: The I2C communication interface of the SMB-1351-0-49CWLNSP-TR-01-0-17 allows for detailed interaction with external microcontrollers or processors. This enables real-time monitoring of the battery’s status, including charge levels and health, and allows for the adjustment of charging parameters based on current conditions and requirements.
Compact and Versatile: Encased in a compact QFN package, the SMB-1351-0-49CWLNSP-TR-01-0-17 is designed for use in applications where space is at a premium. Its small form factor makes it ideal for integration into devices like smartphones, tablets, and wearables, where efficient battery management is crucial in a compact design.
Specification parameters
Input Voltage Range:
Typical Range: 3.5V to 5.5V, allowing flexibility with various input power sources.
Charging Current:
Supported Charging Currents: Programmable, typically up to 1.5A, though this can vary depending on the specific configuration and application requirements.
Charge Voltage Regulation:
Regulated Voltage: Generally set at 4.2V per cell, with adjustments available to accommodate different battery specifications.
Protection Features:
Overcharge Protection: Prevents the battery from charging beyond its maximum voltage to avoid potential damage.
Over-discharge Protection: Ensures that the battery does not discharge below safe levels.
Over-current Protection: Guards against excessive current flow that could damage the IC or battery.
Short-circuit Protection: Provides safety against short circuits, protecting the circuit from possible damage.
Communication Interface:
I2C Interface: Facilitates communication with external controllers, enabling real-time data exchange and control over battery management functions.
Thermal Management:
Thermal Shutdown: Activates if the IC exceeds safe temperature limits, ensuring the device does not overheat.
Package Type:
Package: QFN (Quad Flat No-Lead), providing a compact, efficient form factor suitable for integration into small electronic devices.
