Product description
The Qualcomm SMB-1351-0-49CWLNSP-SR-01-0-09 is a high-performance battery management integrated circuit designed for accurate control and monitoring of lithium-ion and lithium-polymer batteries. Its advanced features and compact design make it well-suited for modern electronic devices requiring efficient and reliable battery management.
Battery Management: The IC uses a constant current/constant voltage (CC/CV) charging approach to ensure optimal battery health and performance. It maintains a standard charging voltage of 4.2V per cell and supports adjustable charging currents up to 1.5A or higher. This flexibility enables compatibility with various battery types and sizes, optimizing both efficiency and safety.
Protection Mechanisms: The SMB-1351-0-49CWLNSP-SR-01-0-09 integrates essential protection features to safeguard the battery and the IC:
Overcharge Protection: Prevents excessive charging that could damage the battery.
Over-discharge Protection: Protects the battery from discharging below safe voltage levels.
Over-current Protection: Controls the current to avoid overheating and damage to the IC and battery.
Short-circuit Protection: Provides a safeguard against short circuits that could cause significant damage.
Thermal Management: To manage heat effectively, the IC features thermal shutdown functionality. This feature activates if the IC’s temperature exceeds safe operational limits, thus preventing thermal damage and ensuring consistent performance.
Communication and Integration: The I2C communication interface allows for real-time data exchange with external microcontrollers or processors. This capability supports detailed monitoring and dynamic adjustment of battery parameters, enhancing overall battery management and control.
Compact Design: The SMB-1351-0-49CWLNSP-SR-01-0-09 is housed in a QFN package, making it ideal for integration into compact devices. Its small size is particularly suited for applications where space is limited, such as in smartphones, tablets, and wearables.
Specification parameters
Input Voltage Range:
Range: 3.5V to 5.5V. This range accommodates various power sources, making the IC versatile for different applications.
Charging Current:
Adjustable Charging Current: Supports up to 1.5A or higher, allowing for flexibility in charging rates according to the specific requirements of the battery and application.
Charge Voltage Regulation:
Regulation Voltage: Typically set at 4.2V per cell, which is standard for lithium-ion (Li-ion) batteries. The IC allows for adjustment of this voltage to match different battery specifications.
Protection Features:
Overcharge Protection: Ensures the battery is not charged beyond its maximum safe voltage.
Over-discharge Protection: Prevents the battery from discharging below its minimum safe voltage.
Over-current Protection: Limits current to avoid overheating and damage.
Short-circuit Protection: Shields the IC from damage due to short circuits.
Communication Interface:
I2C Interface: Enables real-time communication with external controllers for monitoring and managing battery status.
Thermal Management:
Thermal Shutdown: Engages if the IC's temperature exceeds safe limits, preventing overheating and ensuring reliable operation.
Package Type:
Package: QFN (Quad Flat No-Lead), designed for compact and efficient integration into space-constrained applications.
