Linear Technology LTC3550EDHC: Integrated Power Management Solution

The LTC3550EDHC from Linear Technology is a highly integrated power management IC designed to cater to the demanding requirements of portable applications. This compact, multifunctional component combines a USB-compatible linear charger, a synchronous step-down DC/DC converter, and a high current synchronous boost DC/DC converter, all in a single package, making it an ideal choice for space-constrained environments.

Key Features:

• Dual Input PowerPath: The LTC3550EDHC supports a full-featured PowerPath management system, which allows for seamless transition between multiple input sources such as USB and AC adapters.
• Efficient Battery Charging: With its programmable battery float voltage and charge current, the LTC3550EDHC ensures safe and efficient charging of single-cell Li-Ion/Polymer batteries. The device's thermal regulation optimizes the charge rate under all conditions.
• Step-Down DC/DC Converter: The integrated 600mA synchronous buck converter operates with a 2.25MHz switching frequency, which minimizes the size of external components and helps maintain high efficiency.
• Step-Up DC/DC Converter: A 400mA synchronous boost converter is included to provide a constant output voltage even when the battery voltage drops below the set output level, ensuring uninterrupted operation of the load.
• Compact Design: Housed in a 16-lead DFN package, the LTC3550EDHC offers a compact solution that minimizes board space and simplifies design.

Applications:

The LTC3550EDHC is perfectly suited for a variety of portable devices where efficient power management is crucial. This includes:

• Smartphones and PDAs
• Digital Cameras
• Portable Media Players
• Handheld GPS Systems
• Other USB-powered devices

With its robust feature set and compact form factor, the LTC3550EDHC from Linear Technology provides designers with a versatile power management solution that can significantly enhance battery life and performance in portable electronic devices.