Linear Technology's LTC4068XEDD-4.2#PBF Battery Charger

The LTC4068XEDD-4.2#PBF from Linear Technology is a highly efficient standalone linear single-cell lithium-ion battery charger with a compact design, suitable for a wide range of portable applications. This integrated circuit (IC) is designed to work with wall adapters, USB ports, or automotive power supplies, ensuring that users have flexible charging options for their devices.

Key Features

• Input Voltage Range: The device can accept an input voltage range from 4.25V to 8V, making it versatile for use with various power supplies.
• Programmable Charge Current: The LTC4068XEDD-4.2#PBF allows for programmable charge current up to 1A, enabling users to tailor the charging performance to the specific needs of their battery.
• Integrated Thermal Regulation: To prevent overheating, this IC includes an integrated thermal regulation mechanism that maximizes the charge rate without the risk of overheating.
• Charge Termination: The IC terminates the charge cycle when the charge current drops to 1/10th of the programmed value after the final float voltage is reached, ensuring the battery is not overcharged.
• Standby Mode: When the input supply is removed, the LTC4068XEDD-4.2#PBF automatically enters a low-current standby mode, preserving battery energy.
• Automatic Recharge: An automatic recharge feature initiates a new charging cycle when the battery voltage falls below 4.05V, keeping the battery topped up.

Protection Features

• Overvoltage Protection: The charger includes overvoltage protection that prevents damage to the battery if the input voltage exceeds the maximum threshold.
• C/10 Detection: End-of-charge control is facilitated by C/10 detection, ensuring safe and complete charging.

The LTC4068XEDD-4.2#PBF comes in a compact 10-lead (3mm × 3mm) DFN package, which is ideal for space-constrained applications. Its precise final float voltage of 4.2V ensures the battery is charged to its full capacity, optimizing the performance and longevity of the battery. With a charge current monitor output for gas gauging and the ability to work with poor quality inputs, this charger IC is an excellent choice for portable electronics, such as smartphones, cameras, and GPS devices, requiring reliable and consistent charging solutions.

Linear Technology's commitment to high-quality and performance is evident in the LTC4068XEDD-4.2#PBF, making it a trusted component for designers looking to incorporate a robust charging solution into their applications.