LT1579CGN-5

PMIC - Battery Management

In this article, we look at the LT1579CGN-5 application field and working principle. As a monolithic power management integrated circuit (PMIC), the LT1579CGN-5 is designed for applications that require a battery management solution such as digital cameras, portable devices, and embedded systems. The LT1579CGN-5 can support all three primary cell chemistries—lithium-ion (Li-ion), lithium-polymer (Li-Polymer), and nickel-metal hydride (NiMH) and is able to balance cells with cell voltages as low as 0.7V.

Features of LT1579CGN-5

The LT1579CGN-5 features a charge controller, a single cell battery active current source and a switch mode buck DC/DC converter that are all integrated into a 8-pin LLP package. This PMIC can be used to optimize battery life and energy storage capabilities. Its features include:

• Low quiescent current standby mode
• Integrated switch mode buck dc/dc converter
• Integrated passive discharge circuit and N-channel MOSFETs arrays
• Power MOSFET and 10V linear regulator
• User selectable battery types
• Intelligent charge termination and status monitoring

Applications of LT1579CGN-5

The LT1579CGN-5 is suitable for a variety of battery-powered applications such as digital cameras, portable media players, personal digital assistants, and embedded systems. It can also be used for personal and industrial robots, remote control vehicles, portable communication devices, and medical equipment. The LT1579CGN-5 can also be used to replace switches, relays, and voltage regulators in cell phones, laptops, tablets and many other portable devices.

Working Principle of LT1579CGN-5

The LT1579CGN-5 is able to detect the battery type during charge and discharge, and depending on the battery type it will adjust the charging algorithm, allowing for maximum battery life and accurate charge performance. During charge, the IC will monitor the battery voltage and automatically terminate charging when the voltage reaches the end of charge voltage or the time limit of the charging algorithm is reached. During discharge, the integrated switch provides extra current and voltage regulation to improve battery discharge performance.

The LT1579CGN-5 features an effective low quiescent current standby mode and user-selectable battery types that allow it to be used in a variety of applications. The IC also employs an intelligent charge termination which ensures the battery is fully charged and safe from overcharging. In addition, the IC can automatically adjust its parameters to the optimal setting for a given battery type, thus providing the highest battery life and reliability.

Overall, the LT1579CGN-5 provides an effective and efficient battery management solution for a variety of applications. It provides the highest battery life and improved reliability, as well as optimized charge performance. Additionally, the IC is designed to support all three primary cell chemistries.