The LTC3552EUD is an integrated power management solution from Linear Technology, designed to cater to the demanding needs of portable applications. This compact, multifunctional device combines a dual-input power manager, a standalone battery charger, and multiple output regulators in a single package, making it an ideal choice for space-constrained environments.

Key Features:

• Dual Input Power Path: The LTC3552EUD supports a dual-input power path, which allows the device to draw power from a USB port or an AC adapter, providing flexibility for various charging scenarios.
• Standalone Battery Charger: The device includes a high-efficiency, standalone linear charger for single-cell lithium-ion or lithium-polymer batteries. It offers a programmable charging current up to 950mA, which can be adjusted via an external resistor.
• High-Efficiency Synchronous Buck Regulator: The integrated synchronous buck regulator delivers up to 600mA of continuous output current with high efficiency, which is essential for prolonging battery life in portable devices.
• Low Dropout Linear Regulator (LDO): An additional LDO provides up to 150mA of output current, suitable for powering low-power auxiliary components or for use as a system standby power supply.
• PowerPath Control: Advanced PowerPath control ensures seamless transition between input power sources and battery, maintaining a constant supply to the load while optimizing battery charging.
• Compact Package: The LTC3552EUD comes in a compact, 16-lead 3mm x 3mm QFN package, which minimizes the required PCB area and is ideal for portable devices where space is at a premium.

Applications:

The LTC3552EUD is suitable for a wide range of portable devices, such as:

• Smartphones and PDAs
• Digital Cameras
• Portable Media Players
• Handheld Instruments
• GPS Devices
• Other USB-powered gadgets

With its versatile feature set and compact design, the LTC3552EUD from Linear Technology offers a comprehensive power management solution that simplifies the design of portable electronic devices while ensuring efficient operation and maximized battery life.