Product description
The Qualcomm SMB-1351-0-49CWLNSP-HR-02-0-03 is a high-performance integrated circuit designed to provide precise battery management for lithium-ion and lithium-polymer batteries. Its combination of advanced features and compact design makes it ideal for use in a wide range of modern electronic devices.
Battery Management: The SMB-1351-0-49CWLNSP-HR-02-0-03 employs a constant current/constant voltage (CC/CV) charging strategy to maintain battery health and efficiency. 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 versatility ensures compatibility with various battery sizes and types, optimizing both performance and safety.
Protection Mechanisms: This IC is equipped with several critical safety features to protect both the battery and the integrated circuit:
Overcharge Protection: Prevents the battery from being charged beyond its maximum safe voltage, which helps avoid overcharge conditions that could damage the battery.
Over-discharge Protection: Ensures the battery does not discharge below safe voltage levels, thus protecting it from potential damage.
Over-current Protection: Controls the current to prevent overheating and potential damage to both the IC and the battery.
Short-circuit Protection: Provides a safeguard against short circuits that could cause significant damage to the IC or battery.
Thermal Management: The IC includes thermal shutdown functionality to address potential overheating issues. This feature activates if the IC’s temperature exceeds safe limits, thereby preventing thermal damage and ensuring reliable operation.
Communication and Integration: With its I2C communication interface, the SMB-1351-0-49CWLNSP-HR-02-0-03 allows for efficient data exchange with external microcontrollers or processors. This capability supports real-time monitoring and dynamic adjustment of battery parameters, providing enhanced control and flexibility for battery management.
Compact Design: The IC is housed in a QFN package, which is well-suited for applications with limited space. Its compact form factor makes it ideal for integration into devices such as smartphones, tablets, and wearables, where space efficiency and effective battery management are crucial.
Specification parameters
Input Voltage Range:
Range: 3.5V to 5.5V, providing flexibility to work with different power sources and meet various application requirements.
Charging Current:
Adjustable Charging Current: Capable of supporting charging currents up to 1.5A or higher, allowing customization to fit specific battery and application needs.
Charge Voltage Regulation:
Regulation Voltage: Typically set to 4.2V per cell, which is standard for Li-ion batteries. The IC also provides options for adjusting this voltage to suit different battery specifications.
Protection Features:
Overcharge Protection: Prevents the battery from charging beyond its maximum safe voltage.
Over-discharge Protection: Avoids discharging the battery below its minimum safe voltage.
Over-current Protection: Limits current flow to prevent overheating and damage.
Short-circuit Protection: Protects against short circuits that could cause significant damage.
Communication Interface:
I2C Interface: Enables real-time communication with external controllers, facilitating effective monitoring and management of battery status.
Thermal Management:
Thermal Shutdown: Engages if the IC’s temperature exceeds safe thresholds, preventing overheating.
Package Type:
Package: QFN (Quad Flat No-Lead), offering a compact and efficient design suitable for integration into space-constrained applications.
