LTC4089EDJC-3#TRPBF

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The LTC4089EDJC-3#TRPBF is a member of the low-power, high performance PolyPhase® battery charging controllers from Linear Technology. It combines the functionality of a power-path manager, buck-boost DC/DC converter and active battery balancer into one integrated system. The device is specifically designed to address the growing need for increased safety and system efficiency in portable electronic solutions.

The LTC4089EDJC-3#TRPBF is a feature-packed Power Management Integrated Circuit (PMIC) that enables multi-chemistry battery charging, power-path management and high-efficiency power conversion operations in multiple operating modes. It is an ideal solution for lithium-ion, non-rechargeable and other battery technologies, with the potential for use in a variety of applications including automotive, home security, industrial, handheld, point-of-sale (POS), and medical instrumentation.

Application Field:

The LTC4089EDJC-3#TRPBF can be used in applications such as extending battery life of handheld computer devices, portable medical instruments, automotive electronic systems, industrial systems, home security systems, and point-of-sale (POS) terminals. The PMIC provides single-cell 3.6V to 15.5V input support, high-efficiency power conversion, up to 6-cell Li-Ion/Polymer support, battery temperature monitoring and charger control, and low-battery management.

Working Principle:

The LTC4089EDJC-3#TRPBF combines the functionality of a power-path manager, buck-boost DC/DC converter, and active battery balancer into one integrated system. The device provides the flexibility and features necessary to allow battery charging to keep pace with the changing requirements of today’s portable applications. PolyPhase® architecture allows the user to select from a variety of charging topologies, including single-cell NiCd, NiMH, Li-Ion/Li-Polymer, lead-acid, and alkaline charges.

The programmability and flexibility of the LTC4089EDJC-3#TRPBF enable a very efficient solution for portable applications. It integrates a wide range of functions in a single-chip solution to achieve high efficiency power conversion and monitoring including pulse charging, algorithm selection, accuracy monitoring, and data logging. The device provides comprehensive protection features such as thermal shutdown, NTC protection (NTC PTH), voltage limit, and reverse-current protection.

The LTC4089EDJC-3#TRPBF is also capable of implementing active battery balancing to ensure consistent battery performance and reduce the overall footprint of the system. Active battery balancing involves sending currents into each cell in order to equalize their potentials, thereby maximising their useful life. The current offset capability ensures that the battery can be discharged at a safe rate, and the temperature monitoring capabilities allow further customisation of the charging profile.

The ultra-low quiescent current and device shutdown features of the LTC4089EDJC-3#TRPBF ensure extended standby times in portable power-sensitive applications. In addition, its integrated dual-output buck-boost regulators and switchable powering paths help to boost efficiency and minimise external component counts. This makes the device an ideal choice for applications with limited board space.

The LTC4089EDJC-3#TRPBF is an industry leading PMIC that enables multi-chemistry battery charging and power-path management, while providing the programmable features, protection, and control necessary for portable electronic solutions. Its versatility and versatility makes it an ideal solution for a wide range of battery charging applications.

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