LTC4006EGN-6#PBF

PMIC - Battery Chargers

Battery chargers based on the LTC4006EGN-6#PBF stand out in PMIC (Power Management Integrated Circuits) applications, as they offer a unique combination of features, including high efficiency, very low quiescent current, power sharing, and programmability. The LTC4006EGN-6#PBF is a high-efficiency battery charger controller for single-cell Li-Ion/Polymer battery applications, designed to rapidly and safely charge a wide variety of battery chemistries from +2.2V to +4.6V, regardless of the voltage source.

Working Principle

The LTC4006EGN-6#PBF is an easy to use, highly integrated PWM controller that contains all of the active components to autonomously charge batteries for portable applications, as well as converters for USB-powered lighting applications. It takes feedback from an external sense resistor to provide a constant current/constant voltage type of charging. To protect the battery, the LTC4006EGN-6#PBF monitors both temperature and current when charging. During charging, the battery voltage is monitored and reached a certain level, the charger will be enter the constant voltage type charging mode, instead of continuing at constant current.

Application field

The LTC4006EGN-6#PBF is recommended for any battery charging applications, including portable consumer electronics, cellular phones, PDAs and digital cameras. As the current requirement in many systems is quite small, the LTC4006EGN-6#PBF offers several features that can help to save battery power when the charger is inactive. The LTC4006EGN-6#PBF features programmable current limit, input voltage limit and output voltage limit functionality to ensure current, input/output voltages are properly limited. It also offers best-in-class low standby current, making it extremely suitable for low power applications. Additionally, the LTC4006EGN-6#PBF provides the option to limit the battery charging current when an external power source is connected, to prevent the power source from being overloaded if the battery is fully charged.

Conclusion

The LTC4006EGN-6#PBF combines high efficiency, low quiescent current, power sharing, and programmability for single-cell Li-Ion/Polymer battery applications. This highly integrated PWM controller contains all of the active components to autonomously charge batteries for portable applications, as well as converters for USB-powered lighting applications. Whether you need to charge single cells in a low power application or multiples in a portable device, the LTC4006EGN-6#PBF is a great option.