Product description
The Qualcomm SMB-1351-0-40MQFN-MT-03-0-00 is a high-performance battery management integrated circuit designed to provide precise control and monitoring for lithium-ion and lithium-polymer batteries. It is engineered to deliver optimal performance and safety in a compact package, making it suitable for a wide range of modern electronic devices.
Battery Management: The IC employs a constant current/constant voltage (CC/CV) charging strategy, which is essential for maintaining battery health and performance. 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 flexibility allows the IC to accommodate various battery sizes and types, ensuring efficient and safe charging.
Protection Mechanisms: Safety is a critical feature of the SMB-1351-0-40MQFN-MT-03-0-00. It includes several protection mechanisms:
Overcharge Protection: Ensures that the battery does not exceed its maximum safe voltage during charging, thereby preventing overcharge conditions that could damage the battery.
Over-discharge Protection: Protects the battery from discharging below safe voltage levels, which could otherwise lead to damage or reduced battery life.
Over-current Protection: Limits the current 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 handle thermal issues, the SMB-1351-0-40MQFN-MT-03-0-00 features thermal shutdown functionality. This feature activates if the IC's temperature rises beyond its safe operating limits, protecting the IC and the device from overheating and ensuring stable operation.
Communication and Integration: The I2C communication interface allows the SMB-1351-0-40MQFN-MT-03-0-00 to communicate with external microcontrollers or processors. This enables real-time monitoring and adjustment of battery status and charging parameters, providing enhanced control and flexibility for battery management.
Compact Design: The IC is housed in a compact MQFN package, which is ideal for applications where space is at a premium. This design makes it suitable for integration into compact electronic devices such as smartphones, tablets, and wearables, where efficient space utilization and effective battery management are essential.
Specification parameters
Input Voltage Range:
Range: 3.5V to 5.5V, providing flexibility to accommodate various power sources and application requirements.
Charging Current:
Programmable Charging Current: Supports adjustable charging currents, typically up to 1.5A or higher, depending on the specific battery and application needs.
Charge Voltage Regulation:
Regulation Voltage: Typically set to 4.2V per cell, which is standard for Li-ion batteries. The IC also offers options for adjustment to meet different battery specifications.
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 current to safe levels to prevent overheating and damage.
Short-circuit Protection: Provides safeguards against short circuits that could damage the IC or battery.
Communication Interface:
I2C Interface: Facilitates real-time communication with external controllers, enabling effective monitoring and management of battery status.
Thermal Management:
Thermal Shutdown: Activates if the IC's temperature exceeds safe operating limits, protecting the device from overheating.
Package Type:
Package: MQFN (Micro Quad Flat No-Lead), offering a compact and efficient form factor suitable for space-constrained applications.
