Product description
The Qualcomm SMB-1351-0-49CWLNSP-SR-01-0-03 is a high-performance battery management integrated circuit designed for accurate control and monitoring of lithium-ion and lithium-polymer batteries. Its combination of advanced functionality and compact design makes it suitable for a wide range of modern electronic devices.
Battery Management: The IC utilizes a constant current/constant voltage (CC/CV) charging strategy, which maintains optimal 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 ensures compatibility with various battery types and sizes, optimizing both efficiency and safety.
Protection Mechanisms: The SMB-1351-0-49CWLNSP-SR-01-0-03 is equipped with several critical protection features to safeguard the battery and the IC:
Overcharge Protection: Prevents the battery from exceeding its maximum safe charging voltage, avoiding potential overcharge damage.
Over-discharge Protection: Ensures that the battery does not discharge below its minimum safe voltage, protecting it from possible damage.
Over-current Protection: Controls the current to prevent overheating and damage to both the IC and the battery.
Short-circuit Protection: Shields the IC and battery from damage due to short circuits.
Thermal Management: To handle potential overheating, the IC includes thermal shutdown functionality. This protective feature engages if the IC’s temperature exceeds safe operational limits, preventing thermal damage and ensuring reliable performance.
Communication and Integration: The I2C communication interface enables efficient real-time data exchange with external microcontrollers or processors. This capability supports effective monitoring and dynamic adjustment of battery parameters, enhancing overall battery management.
Compact Design: The SMB-1351-0-49CWLNSP-SR-01-0-03 is housed in a QFN package, making it ideal for integration into compact devices. Its small footprint allows for use in space-constrained applications such as smartphones, tablets, and wearables, where efficient use of space and effective battery management are critical.
Specification parameters
Input Voltage Range:
Range: 3.5V to 5.5V. This broad input voltage range provides flexibility in power source selection, accommodating various 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, which is standard for Li-ion batteries. The IC also allows for voltage adjustment to accommodate different battery specifications.
Protection Features:
Overcharge Protection: Prevents the battery from charging beyond its maximum safe voltage.
Over-discharge Protection: Protects the battery from discharging below its minimum safe voltage.
Over-current Protection: Limits current flow to prevent overheating and damage.
Short-circuit Protection: Provides protection against short circuits that could cause significant damage.
Communication Interface:
I2C Interface: Facilitates real-time communication with external controllers for effective monitoring and management of battery status.
Thermal Management:
Thermal Shutdown: Activates if the IC’s temperature exceeds safe operational limits, ensuring protection against overheating.
Package Type:
Package: QFN (Quad Flat No-Lead), which supports compact and efficient integration into space-constrained applications.
