LTC4098EPDC#PBF - High Efficiency USB Power Manager and Li-Ion Battery Charger

The LTC4098EPDC#PBF is a versatile and advanced power management solution designed by Linear Technology, now part of Analog Devices, for portable USB-powered devices. This integrated circuit offers a comprehensive set of features aimed at efficiently managing power from a USB port and charging single-cell lithium-ion batteries.

At the heart of the LTC4098EPDC#PBF is its ability to automatically control power flow between multiple sources such as USB, a wall adapter, and a battery. It ensures that the priority is given to the system load while concurrently and independently charging the battery. The device can seamlessly transition between inputs without interrupting the power supply to the load, making it ideal for portable applications where consistent operation is critical.

The charging capability of the LTC4098EPDC#PBF is highly sophisticated, with programmable charge current up to 1.5A from a wall adapter and up to 500mA from a USB port. The charger is designed to be compliant with USB 2.0 specifications and includes a patented thermal regulation technique that maximizes the charge rate without the risk of overheating.

Additionally, the LTC4098EPDC#PBF features PowerPath™ control, which provides preferential treatment to system load over battery charging, ensuring that the device remains operational even when the battery is low. It also boasts an instant-on operation that powers the system even with a dead or missing battery, as long as external power is available.

Other notable features of the LTC4098EPDC#PBF include overvoltage protection, which guards the device against input voltages up to 15V, and a "suspend" mode that reduces battery drain when the host controller enters sleep mode. The product is available in a 4mm x 4mm QFN package, offering a compact solution for space-constrained applications.

Overall, the LTC4098EPDC#PBF is an efficient and reliable choice for designers looking to enhance the power management and charging capabilities of their USB-powered portable devices, with the assurance of quality and performance from a leading manufacturer in the industry.