Linear Technology LTC3556EUFD#PBF Power Management IC

The LTC3556EUFD#PBF is a versatile and integrated power management solution designed by Linear Technology, now part of Analog Devices. This multifunctional IC is specifically crafted to cater to the power requirements of portable Li-Ion/Polymer battery applications. It integrates a linear charger, a PowerPath manager, an ideal diode, and multiple synchronous step-down regulators, making it a comprehensive power control solution for modern portable devices.

Key Features

• Integrated Power Management: The LTC3556EUFD#PBF combines several key functions into one package, including a full-featured battery charger, a PowerPath manager, and an ideal diode controller, along with three high-efficiency synchronous buck regulators.
• Efficient Battery Charging: The device features a programmable Li-Ion/Polymer battery charger with a selectable charge current up to 1.5A, which allows for fast and efficient charging of the battery, while also providing preconditioning, termination, and battery temperature monitoring for safe charging.
• Multiple Output Voltages: It includes three synchronous step-down regulators with independent output voltages, which are capable of delivering up to 600mA, 400mA, and 400mA of continuous output current respectively, ensuring a reliable power supply for various components of the system.
• PowerPath Control: The PowerPath control feature enables seamless transition between input power and battery power, ensuring a consistent supply to the load and optimal battery charging.
• Thermal Regulation: To protect against overheating, the LTC3556EUFD#PBF incorporates thermal regulation, which reduces charge current in the event of excessive temperature rise.
• Compact Design: Packaged in a compact, low-profile (0.75mm) 24-pin 4mm x 4mm QFN package, the LTC3556EUFD#PBF is designed to save board space and is ideal for space-constrained portable applications.

Applications

Thanks to its compact size and comprehensive feature set, the LTC3556EUFD#PBF is an excellent power management choice for a wide range of portable electronic devices, such as:

• Smartphones and PDAs
• Digital Cameras
• Portable Media Players
• Handheld GPS Units
• Other USB-based charging devices

Overall, the LTC3556EUFD#PBF from Linear Technology provides design engineers with a highly integrated, efficient, and space-saving solution for the complex power management requirements of today's portable electronics.