Product description
The Qualcomm SMB-1351-0-49CWLNSP-HR-02-0-00 is a high-performance battery management integrated circuit designed for precise control and monitoring of lithium-ion and lithium-polymer batteries. It combines advanced features with a compact design to provide reliable and efficient battery management in modern electronic devices.
Battery Management: The IC utilizes 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 capability ensures compatibility with various battery sizes and types, optimizing charging performance and safety.
Protection Mechanisms: Safety is a key focus of the SMB-1351-0-49CWLNSP-HR-02-0-00, which includes several protective features:
Overcharge Protection: Prevents excessive charging by limiting the battery voltage to safe levels.
Over-discharge Protection: Safeguards the battery from discharging below safe voltage levels, which could otherwise damage the battery.
Over-current Protection: Controls the current flow to avoid overheating and potential damage.
Short-circuit Protection: Provides a safeguard against short circuits that could significantly damage the IC or battery.
Thermal Management: To ensure reliable operation, the IC features thermal shutdown functionality. This mechanism activates if the IC’s temperature rises above safe limits, protecting the device from overheating and maintaining stable performance.
Communication and Integration: The SMB-1351-0-49CWLNSP-HR-02-0-00 includes an I2C communication interface for seamless data exchange with external microcontrollers or processors. This feature supports real-time monitoring and adjustment of battery parameters, offering enhanced control and flexibility in battery management.
Compact Design: The IC’s QFN package design allows for integration into compact electronic devices where space is limited. This small form factor makes it ideal for applications such as smartphones, tablets, and wearables, where efficient use of space and effective battery management are crucial.
Specification parameters
Input Voltage Range:
Range: 3.5V to 5.5V, providing flexibility to accommodate various power sources and application requirements.
Charging Current:
Adjustable Charging Current: Supports charging currents up to 1.5A or higher, allowing customization based on the specific needs of the battery and application.
Charge Voltage Regulation:
Regulation Voltage: Typically set to 4.2V per cell, which is standard for Li-ion batteries. The IC also offers adjustment options to suit different battery specifications.
Protection Features:
Overcharge Protection: Ensures that the battery does not exceed its maximum safe voltage during charging.
Over-discharge Protection: Prevents the battery from discharging below its minimum safe voltage, protecting against potential damage.
Over-current Protection: Limits current to prevent overheating and potential damage to the IC and battery.
Short-circuit Protection: Provides protection against short circuits that could cause significant damage.
Communication Interface:
I2C Interface: Enables real-time communication with external controllers, allowing for effective monitoring and management of battery status.
Thermal Management:
Thermal Shutdown: Engages if the IC’s temperature exceeds safe thresholds, protecting the device from overheating.
Package Type:
Package: QFN (Quad Flat No-Lead), offering a compact and efficient design suitable for integration into space-constrained applications.
