Overview of LTC4055EUF#TR

The LTC4055EUF#TR is a highly integrated, standalone linear charger from Linear Technology, specifically designed for single-cell lithium-ion batteries. This compact, thermally efficient device comes in a 16-lead QFN package and offers a full range of features to ensure safe and efficient charging of portable devices.

Key Features

• USB Compatibility: The LTC4055EUF#TR is designed to work seamlessly with USB power sources, making it ideal for use in portable electronics that require charging via a USB port.
• Adjustable Charging Current: The charging current can be easily programmed to suit the needs of various battery capacities, ensuring optimal charging rates and battery longevity.
• Integrated End-of-Charge Detection: The charger includes precise end-of-charge detection, which signals when the battery is fully charged, thereby preventing overcharging and extending battery life.
• Thermal Regulation: To protect the battery and circuitry, the LTC4055EUF#TR features thermal regulation that reduces charge current if the device temperature becomes too high.
• Automatic Recharge: After the battery reaches the full charge, the device initiates a new charge cycle if the battery voltage falls below a preset threshold, ensuring the battery remains fully charged.

Applications

The LTC4055EUF#TR is perfect for a wide range of portable applications where efficient and reliable battery charging is essential. Common applications include:

• Smartphones and PDAs
• Digital Cameras
• Portable Media Players
• Handheld GPS Units
• Other USB-Powered Devices

Product Specifications

With its compact form factor and robust feature set, the LTC4055EUF#TR delivers a maximum charge current programmable up to 1A, operates in a supply voltage range from 4.25V to 6.5V, and provides a float voltage accuracy of ±0.8%. Additionally, the device includes safety features such as automatic recharge, thermal feedback, and charge current monitoring.

For developers and manufacturers seeking a reliable and versatile charging solution for lithium-ion batteries, the LTC4055EUF#TR from Linear Technology stands out as an excellent choice, offering both performance and ease of integration into existing designs.