LTM8062IV#PBF

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PMIC - Battery Chargers - LTM8062IV#PBF Application Field and Working Principle

The Linear Technology LTM8062IV#PBF is a high-performance monolithic synchronous battery charger controller designed to charge multicell Li-Ion and Li-Ion polymer battery packs. It is designed to operate with a wide input voltage range of 4.25V to 18V, working as a standalone charger or with pre-regulation. The charger IC incorporates a wide buck converter in order to implement a buck-boost converter.

The LTM8062IV#PBF is the latest addition to the Linear Technology family of advanced battery charging ICs. It features an input voltage range from 4.25V to 18V, allowing it to be used for applications requiring a wide input voltage range. The battery charge current can be programmed up to 10A for Li-Ion, Li-Ion polymer, and other battery types. The charge current can also be programmed using the feedback voltage at the CS pin. The LTM8062IV#PBF supports pulsed charging, allowing the peak charge current to be increased without the need for additional power components.

The on-chip bypass MOSFET switches and low-dropout linear regulator ensure a tight control of the charge current and charge voltage, respectively. The device also incorporates reverse current protection, short circuit protection, and thermal shutdown. A watchdog timer and a fault pin are provided to ensure proper system operation when used as a standalone charger. The device also features current sense, input sense, and temperature sense features to provide a comprehensive battery management system.

Application Field

The LTM8062IV#PBF is designed for use as a standalone charger in portable applications and automotive applications where a wide input voltage range is required. The device also supports pre-regulation for other applications such as portable and custom power systems requiring higher currents. The on-board MOSFET switching along with programmable charge current and charge voltage make it suitable for a wide range of portable applications including portable handsets, power tools, and cameras.

Working Principle

The LTM8062IV#PBF operates by combining a buck converter and a low-dropout linear regulator. The buck converter operates on an input voltage range from 4.25V to 18V, allowing it to be used for applications requiring a wide input voltage range. The charge voltage and charge current are programmed using the CS pin. The current is set by the voltage at the CS pin and the voltage is programmed by resistor divider network connected to the VREF pin. The on-board MOSFET switching eliminates the need for additional external components. The device also features on-chip reverse current protection, short circuit protection, and thermal shutdown. The LTM8062IV#PBF features a watch dog timer and fault pin, allowing it to be used as a standalone charger. The current sense, input sense, and temperature sense features allow the device to be used for a wide range of applications in portable and automotive applications.

The LTM8062IV#PBF is an excellent choice for high performance battery charging in portable and automotive applications. With its wide input voltage range, tight control of charge current and charge voltage, and fault pin, the LTM8062IV#PBF is designed to provide reliable battery management in a variety of applications.

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