Product description
The Qualcomm SMB-1351-0-49CWLNSP-HR-01-0-00 is a sophisticated battery management integrated circuit designed to deliver precise control and monitoring of lithium-ion and lithium-polymer batteries. It is engineered to ensure high performance and safety while being compact enough for modern electronic applications.
Battery Management: The SMB-1351-0-49CWLNSP-HR-01-0-00 utilizes a constant current/constant voltage (CC/CV) charging method, which is crucial for maintaining battery health and efficiency. The IC 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 allows it to accommodate various battery sizes and types, ensuring effective and safe charging.
Protection Mechanisms: The IC includes several protective features to enhance safety:
Overcharge Protection: Prevents the battery from being charged beyond its maximum rated voltage, avoiding potential damage.
Over-discharge Protection: Ensures the battery does not discharge below its safe minimum voltage, which could otherwise lead to damage.
Over-current Protection: Limits the current flow to prevent overheating and potential damage to the IC and battery.
Short-circuit Protection: Guards against short circuits that could cause significant damage to the IC or battery.
Thermal Management: To manage heat effectively, the SMB-1351-0-49CWLNSP-HR-01-0-00 includes thermal shutdown functionality. This feature activates when the IC’s temperature exceeds safe operating limits, protecting the device from overheating and ensuring reliable operation.
Communication and Integration: The I2C communication interface allows for efficient data exchange with external microcontrollers or processors. This enables real-time monitoring and dynamic adjustment of battery parameters, providing greater control over the battery management process.
Compact Design: Encased in a QFN package, the SMB-1351-0-49CWLNSP-HR-01-0-00 is well-suited for applications with limited space. Its compact form factor makes it ideal for integration into small electronic devices such as smartphones, tablets, and wearables, where effective battery management within a constrained design is essential.
Specification parameters
Input Voltage Range:
Range: 3.5V to 5.5V, providing versatility to work with different power sources and meet various application needs.
Charging Current:
Adjustable Charging Current: Typically supports currents up to 1.5A or higher, allowing customization based on specific battery and application requirements.
Charge Voltage Regulation:
Regulation Voltage: Usually set to 4.2V per cell, which is standard for Li-ion batteries. The IC also offers adjustability to accommodate different battery configurations.
Protection Features:
Overcharge Protection: Prevents the battery from charging beyond its maximum safe voltage.
Over-discharge Protection: Avoids battery damage by preventing discharge below safe voltage levels.
Over-current Protection: Limits the current to safe levels to prevent overheating and potential damage.
Short-circuit Protection: Provides a safeguard against short circuits that could cause damage.
Communication Interface:
I2C Interface: Allows real-time communication with external controllers, facilitating effective battery monitoring and management.
Thermal Management:
Thermal Shutdown: Engages if the IC’s temperature exceeds safe operating thresholds, protecting the device from overheating.
Package Type:
Package: QFN (Quad Flat No-Lead), offering a compact and efficient form factor suitable for space-constrained designs.
