LTC4056ETS8-4.2#TRMPBF - Linear Technology's USB Power Manager and Li-Ion Charger

The LTC4056ETS8-4.2#TRMPBF is a highly integrated power management and battery charger IC designed by Linear Technology, tailored for single-cell lithium-ion batteries. This small and efficient device is perfect for portable USB-powered applications, as it combines a current-limited switching PowerPath™ manager with a constant-current/constant-voltage linear charger for single-cell lithium-ion batteries.

Key Features:

• USB Power Management: This IC is designed to work seamlessly with USB power specifications, providing a complete power management solution for devices powered by USB ports.
• Integrated Linear Charger: The LTC4056ETS8-4.2#TRMPBF offers a precise linear charger with programmable charging current up to 750mA, ensuring safe and efficient charging of the battery.
• Automatic Load Prioritization: The PowerPath control feature automatically gives priority to the system load when input power is limited, ensuring the device remains operational even when the battery is low.
• Thermal Regulation: To protect against overheating, the IC includes thermal regulation, which reduces the charge current in the event of excessive temperature rise.
• Charge Status Output: The device provides a charge status output that can be used to drive an external LED, offering a visual indication of the charging process.
• Presets for 4.2V Cells: The LTC4056ETS8-4.2#TRMPBF is preset for charging 4.2V lithium-ion cells, a common voltage for standard Li-Ion batteries.
• Compact Package: Housed in a compact TSOT-23 package, it minimizes the footprint on the PCB and is ideal for space-constrained applications.

Applications:

The LTC4056ETS8-4.2#TRMPBF is versatile and can be used in a variety of applications, including:

• Portable USB Devices
• Handheld Instruments
• Bluetooth Devices
• Stand-Alone Chargers
• Backup Battery Systems

This product from Linear Technology ensures a reliable and convenient solution for managing USB power requirements and charging needs in a single integrated circuit, making it an essential component for modern portable electronic devices.