The LTC3559EUD#PBF is a highly integrated power management solution from Linear Technology, designed to cater to the demanding needs of portable applications. This compact and efficient device integrates dual synchronous step-down DC/DC converters with a full-featured Li-Ion/Polymer battery charger, making it an ideal choice for space-constrained, battery-powered electronics such as handheld devices, digital cameras, and medical equipment.

Key Features

• Integrated Dual DC/DC Converters: The LTC3559EUD#PBF features two high-efficiency, 2.25MHz synchronous buck converters capable of delivering up to 800mA of continuous output current each. These converters can operate from an input voltage range of 2.5V to 5.5V, making them versatile for various power sources.
• Li-Ion/Polymer Battery Charger: An onboard linear charger provides a programmable charge current up to 950mA. The charger is designed for single-cell lithium batteries and includes features such as automatic recharge, trickle charge, and a charge status output.
• PowerPath Control: The LTC3559EUD#PBF supports Linear Technology's PowerPath control, which seamlessly manages power distribution between the input supply, battery, and system load.
• Thermal Regulation: To ensure stability and reliability, the device includes thermal regulation, which reduces charge current if the die temperature exceeds a preset threshold, protecting both the charger and the battery under high power or high ambient conditions.
• Small Footprint: Housed in a compact 3mm x 3mm QFN package, the LTC3559EUD#PBF minimizes the required PCB area, a crucial factor in portable device design.

Applications

The LTC3559EUD#PBF is particularly well-suited for portable applications where efficient power management and space economy are critical. Its dual DC/DC converters and integrated battery charging functionality make it an excellent choice for powering complex handheld devices, ensuring long battery life and reliable operation.

Quality and Reliability

Linear Technology is known for its commitment to high-quality products, and the LTC3559EUD#PBF is no exception. It is designed to meet stringent performance standards, ensuring consistent and dependable operation in a wide range of applications and environments.