Linear Technology LTC4002EDD-4.2#PBF Battery Charger IC

The LTC4002EDD-4.2#PBF is a high-performance, standalone linear battery charger IC designed and manufactured by Linear Technology. This compact and efficient integrated circuit is specifically tailored for charging single-cell lithium-ion batteries with a precise float voltage of 4.2V. It comes in a small, low-profile (3mm x 3mm) DFN package, making it an excellent choice for space-constrained applications.

This advanced charger IC is capable of delivering up to 2A of charge current, which can be programmed via a single resistor. It features a wide input voltage range from 4.5V to 10V, making it versatile for use in a variety of power supply scenarios, including USB-powered systems, wall adapters, and automotive power sources.

The LTC4002EDD-4.2#PBF incorporates numerous safety and protection features to ensure the longevity and stability of the battery and system. These features include automatic recharge, preconditioning of deeply discharged cells, and a charge current monitor for gas gauging. Additionally, it has thermal regulation to maximize the charge rate without the risk of overheating, as well as overvoltage protection that prevents damage to the battery if the input voltage exceeds acceptable levels.

For added convenience, the charger IC includes status indication pins that can be used to signal charge completion and the presence of an input voltage, which can be interfaced with LEDs or other signaling devices. This allows for easy monitoring of the charging process and system diagnostics.

Designed with the end-user in mind, the LTC4002EDD-4.2#PBF is a robust solution for portable electronic devices that require efficient charging and management of lithium-ion batteries. Its combination of performance, compact size, and comprehensive protection features make it an ideal choice for a wide range of applications, including handheld instruments, medical devices, and personal electronics.

With Linear Technology's reputation for high-quality power management solutions, the LTC4002EDD-4.2#PBF stands out as a reliable and efficient component for any single-cell lithium-ion battery charging needs.