Product description
The Qualcomm SMB-1351-0-49CWLNSP-TR-01-0-08 is a highly integrated battery management IC designed to handle the complexities of modern battery charging and management. Its primary function is to ensure that lithium-ion and lithium-polymer batteries are charged efficiently and safely, thereby extending the life of both the battery and the device.
Battery Charging Management: The SMB-1351 employs a constant current/constant voltage (CC/CV) charging algorithm that is commonly used for lithium battery charging. It maintains a regulated charging voltage of 4.2V per cell and allows for adjustable charging currents, which can be tailored to the needs of the specific battery and application.
Protection and Safety: This IC is equipped with robust protection features to safeguard against potential issues. Overcharge protection prevents the battery from exceeding its maximum voltage, while over-discharge protection ensures that the battery is not drained below safe levels. Over-current protection and short-circuit protection further enhance the safety of the device by preventing excessive current flow and damage from short circuits.
Thermal Management: The SMB-1351 includes thermal regulation features that monitor the operating temperature of the IC. If temperatures rise beyond a safe threshold, the IC will shut down to prevent damage. This ensures reliable performance even in demanding conditions.
Communication and Integration: The I2C interface provides a means for external microcontrollers or processors to communicate with the SMB-1351, allowing for real-time monitoring of battery status, charge levels, and other critical parameters. This facilitates seamless integration into various electronic systems, enabling intelligent battery management and control.
Compact and Versatile: The SMB-1351’s compact QFN package makes it ideal for use in space-constrained applications such as mobile phones and portable devices. Its versatility and advanced features make it a suitable choice for a wide range of battery-powered electronics.
For precise details and operational guidance, always refer to the official datasheet and technical documentation provided by Qualcomm.
Specification parameters
Input Voltage Range:
Typical Range: 3.5V to 5.5V, accommodating various power sources.
Charging Current:
Supported Charging Currents: Configurable, typically up to 1.5A, depending on the specific requirements of the application.
Charge Voltage Regulation:
Voltage Regulation: Typically set to 4.2V per cell, adjustable as needed for different battery types.
Protection Features:
Overcharge Protection: Ensures the battery does not exceed its maximum safe voltage.
Over-discharge Protection: Prevents excessive discharge that could damage the battery.
Over-current Protection: Protects against currents beyond the device’s rated limits.
Short-circuit Protection: Safeguards against short circuits that could potentially cause damage.
Communication Interface:
I2C Interface: For data communication with external controllers, enabling battery monitoring and management functions.
Thermal Regulation:
Thermal Shutdown: Prevents overheating by shutting down the IC if it gets too hot.
Package:
Package Type: Typically a QFN (Quad Flat No-Lead) package, designed to fit into compact and space-constrained designs.
