LT3652EDD#TRPBF

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LT3652EDD#TRPBF - PMIC - Battery Chargers

The LT3652EDD#TRPBF is a versatile power management integrated circuit (PMIC) that is specifically designed for battery charging applications. This PMIC includes both a battery charge controller and low noise step-down converter. It is capable of charging Li-ion and Li-ion polymer battery cells, as well as other types of battery chemistries.

The LT3652EDD#TRPBF is especially suited for space-constrained, mobile applications, where providing power from a single battery is critical. For example, the PMIC is commonly used to charge cell phones and other hand-held devices. Additionally, it can also be used in applications such as laptop and automotive chargers, as well as portable medical devices.

Application and Working Principle

The LT3652EDD#TRPBF includes two stages of power conversion. First, it implements a low-noise step-down converter for efficient power delivery. The converter is capable of delivering output currents up to 700mA with switching frequencies up to 1.2MHz. This topology features excellent load and line regulation performance, making it ideal for applications with tight current regulation requirements.

The second stage on the LT3652EDD#TRPBF is a battery charge controller. This circuit implements a single-cell lithium-ion and lithium-ion polymer battery charging feature, with high performance and low system noise. The PMIC is capable of charging up to four parallel Li-ion cells in series, with a series cell voltage range of 4V to 12V. The charge controller can provide constant current, constant voltage, and trickle charge profiles, while operating with a battery regulation voltage accuracy of ±1.25%.

The LT3652EDD#TRPBF also features four guaranteed output current limits, allowing for improved efficiency, system design flexibility, and accurate battery management. Additionally, it includes a low-noise buck controller for powering a fuel gauge, and a low-noise boost regulator for providing a backlight LED or other auxiliary supplies. The PMIC is protected from overcharge, overdischarge, overcurrent, and thermal conditions.

Features and Benefits

The LT3652EDD#TRPBF is an advanced, integrated, low-cost PMIC solution that offers significant advantages in terms of system cost and size. In addition to providing the necessary battery charging and power conversion requirements, it reduces EMI and other electrical noise. It is designed to operate over an extended temperature range, making it suitable for a wide range of applications.

The PMIC is highly efficient and offers fast charging times, while maintaining a low profile and minimal heat dissipation. It allows for integration of more complex charging configurations, such as charging multiple batteries in parallel. The LT3652EDD#TRPBF is easy to configure and provides a single chip solution for portable and hand-held application needs.

Conclusion

The LT3652EDD#TRPBF is a versatile PMIC designed for battery charging and power conversion. It features an integrated low-noise step-down converter and charge controller, and is capable of charging up to four parallel Li-ion cells in series. Its features and benefits provide a single-chip solution for applications including cell phones and other hand-held devices, laptop and automotive chargers, and portable medical devices.

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