Product description
The Qualcomm SMB-1351-0-49CWLNSP-HR-02-0-18 is a high-performance battery management integrated circuit tailored for precise control and monitoring of lithium-ion and lithium-polymer batteries. This IC combines advanced functionality with a compact design, making it suitable for a wide range of modern electronic devices.
Battery Management: Utilizing a constant current/constant voltage (CC/CV) charging approach, the SMB-1351-0-49CWLNSP-HR-02-0-18 ensures optimal battery health and performance. It maintains a standard charging voltage of 4.2V per cell, with support for adjustable charging currents up to 1.5A or more. This flexibility accommodates various battery types and sizes, optimizing both charging efficiency and safety.
Protection Mechanisms: The IC integrates several critical protection features:
Overcharge Protection: Prevents the battery from charging beyond its maximum safe voltage.
Over-discharge Protection: Ensures the battery does not discharge below its minimum safe voltage.
Over-current Protection: Controls the current to prevent overheating and damage.
Short-circuit Protection: Protects against short circuits that could cause significant harm to the IC or battery.
Thermal Management: To address potential overheating issues, the SMB-1351-0-49CWLNSP-HR-02-0-18 includes thermal shutdown functionality. This feature activates if the IC’s temperature exceeds safe limits, preventing thermal damage and maintaining consistent performance.
Communication and Integration: The I2C communication interface allows for efficient real-time data exchange with external microcontrollers or processors. This feature supports effective monitoring and dynamic adjustment of battery parameters, enhancing control over the battery management process.
Compact Design: The IC is housed in a QFN package, making it well-suited for space-constrained applications. Its compact form factor is ideal for integration into devices where space efficiency is critical, such as in smartphones, tablets, and wearables.
Specification parameters
Input Voltage Range:
Range: 3.5V to 5.5V. This broad input voltage range allows the IC to accommodate various power sources, making it versatile for different applications.
Charging Current:
Adjustable Charging Current: Supports charging currents up to 1.5A or higher. This flexibility allows for tailored charging rates depending on the specific requirements of the battery and application.
Charge Voltage Regulation:
Regulation Voltage: Typically set at 4.2V per cell, which is standard for Li-ion batteries. The IC also offers the option to adjust this voltage to match different battery specifications.
Protection Features:
Overcharge Protection: Prevents the battery from exceeding its maximum safe voltage during charging.
Over-discharge Protection: Protects the battery from discharging below its minimum safe voltage.
Over-current Protection: Limits current flow to prevent overheating and potential damage.
Short-circuit Protection: Shields the circuit from 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 operating limits to protect against overheating.
Package Type:
Package: QFN (Quad Flat No-Lead), which supports compact and efficient integration into space-constrained applications.
