Product description
The Qualcomm SMB-1351-0-49CWLNSP-SR-01-0-10 is a high-performance battery management integrated circuit designed for efficient control and monitoring of lithium-ion and lithium-polymer batteries. Its combination of advanced features and compact design makes it well-suited for a variety of modern electronic devices.
Battery Management: The IC utilizes a constant current/constant voltage (CC/CV) charging methodology to ensure optimal battery performance and longevity. It maintains a standard charging voltage of 4.2V per cell and supports adjustable charging currents up to 1.5A or more, providing flexibility for different battery types and sizes. This approach helps to balance charging efficiency with safety.
Protection Mechanisms: The SMB-1351-0-49CWLNSP-SR-01-0-10 incorporates several essential protection features:
Overcharge Protection: Ensures that the battery does not exceed its maximum safe charging voltage, avoiding potential damage.
Over-discharge Protection: Prevents the battery from discharging below its minimum safe voltage, which could otherwise cause damage.
Over-current Protection: Controls the current flow to prevent overheating and potential damage to both the IC and the battery.
Short-circuit Protection: Provides a safeguard against short circuits that could lead to significant harm.
Thermal Management: To address potential overheating, the IC is equipped with thermal shutdown functionality. This protective feature activates if the IC’s temperature rises above safe operational limits, helping to prevent thermal damage and ensuring consistent performance.
Communication and Integration: The I2C communication interface facilitates real-time data exchange with external microcontrollers or processors. This feature allows for precise monitoring and dynamic adjustment of battery parameters, offering enhanced control over the battery management process.
Compact Design: The SMB-1351-0-49CWLNSP-SR-01-0-10 is housed in a QFN package, making it ideal for use in compact devices. Its small footprint supports integration into space-constrained applications such as smartphones, tablets, and wearables, where efficient use of space is crucial.
Specification parameters
Input Voltage Range:
Range: 3.5V to 5.5V. This range accommodates a variety of power sources, making the IC versatile for different types of applications.
Charging Current:
Adjustable Charging Current: Supports charging currents up to 1.5A or higher. This allows for flexible charging rates based on the 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 also offers options for adjusting this voltage to suit different battery specifications.
Protection Features:
Overcharge Protection: Prevents the battery from being charged beyond its maximum safe voltage.
Over-discharge Protection: Protects the battery from discharging below its minimum safe voltage.
Over-current Protection: Limits current to avoid overheating and damage to the IC and battery.
Short-circuit Protection: Safeguards against short circuits that could cause significant damage.
Communication Interface:
I2C Interface: Provides real-time communication with external controllers, enabling effective monitoring and management of battery status.
Thermal Management:
Thermal Shutdown: Engages if the IC’s temperature exceeds safe operational limits, preventing overheating and ensuring reliable performance.
Package Type:
Package: QFN (Quad Flat No-Lead), which supports compact integration into space-constrained applications.
