Product description
The Qualcomm SMB-1351-0-49CWLNSP-HR-02-0-02 is a high-performance battery management integrated circuit engineered for precise control and monitoring of lithium-ion and lithium-polymer batteries. It combines advanced functionality with a compact design to deliver efficient and reliable battery management solutions in modern electronic devices.
Battery Management: The IC utilizes a constant current/constant voltage (CC/CV) charging approach to maintain optimal 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 versatility allows it to accommodate various battery types and sizes, ensuring effective and safe charging.
Protection Mechanisms: The SMB-1351-0-49CWLNSP-HR-02-0-02 includes several critical safety features:
Overcharge Protection: Prevents the battery from being charged beyond its maximum safe voltage, thereby avoiding overcharge conditions.
Over-discharge Protection: Ensures the battery does not discharge below its minimum safe voltage, protecting it from damage.
Over-current Protection: Controls the current to prevent overheating and potential damage to both the IC and battery.
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 protects the IC from overheating by activating if the temperature exceeds predefined safe thresholds, thereby maintaining stable performance.
Communication and Integration: The SMB-1351-0-49CWLNSP-HR-02-0-02 is equipped with an I2C communication interface, which allows for efficient data exchange with external microcontrollers or processors. This feature supports real-time monitoring and dynamic adjustment of battery parameters, providing enhanced control and flexibility in battery management.
Compact Design: The IC’s QFN package design ensures it fits well into compact electronic devices where space is limited. This small form factor makes it suitable for integration into devices such as smartphones, tablets, and wearables, where both efficient space utilization and effective battery management are crucial.
Specification parameters
Input Voltage Range:
Range: 3.5V to 5.5V, providing flexibility to accommodate different power sources and meet a variety of application requirements.
Charging Current:
Adjustable Charging Current: Supports charging currents up to 1.5A or higher, allowing for customization based on specific battery and application needs.
Charge Voltage Regulation:
Regulation Voltage: Typically set to 4.2V per cell, standard for Li-ion batteries. The IC also offers adjustability to suit different battery configurations.
Protection Features:
Overcharge Protection: Prevents the battery from exceeding its maximum safe voltage during charging.
Over-discharge Protection: Avoids discharging the battery below its safe minimum voltage, protecting it from damage.
Over-current Protection: Limits current flow 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: Facilitates real-time data exchange with external controllers, allowing for effective battery monitoring and management.
Thermal Management:
Thermal Shutdown: Activates if the IC’s temperature exceeds safe limits, ensuring protection against overheating.
Package Type:
Package: QFN (Quad Flat No-Lead), offering a compact and efficient form factor suitable for space-constrained applications.
