MP2731

The MP2731 is a 4.5A, highly-integrated switch-mode battery charge management device for single-cell Li-ion or Li-polymer batteries. This device works with NVDC system power path management and is suitable for a variety of applications, including smartphones, tablets, wireless cameras, and other portable devices. Its low-impedance power path optimizes efficiency, reduces battery charging time, and extends battery life. The I²C serial interface allows the device to be flexibly controlled due to its charging and system settings.

The MP2731 supports a wide range of input sources, including standard USB host ports and high-powered wall adapters with fast-charge capabilities. The MP2731 provides USB input type detection via the DP/DM pins.

The device supports USB on-The-Go (OTG) operation by supplying 5V on the input bus with an output current limit up to 3.0A.

The MP2731 initiates and completes a charging cycle without software control. It automatically detects the battery voltage and charges the battery in different stages. The charger automatically terminates when a full charge is detected. When the charged battery drops below the recharge threshold, the charger automatically starts another charging cycle.

The charger provides various safety features for battery charging and system operations, including a charging safety timer, battery temperature monitoring, over-voltage and over-current protection. When any fault occurs, the charger asserts an INT signal to host. The device provides BATFET disable control to enter shipping mode, as well as system reset functionality via the DISC pin.

The MP2731 is available in a QFN-26 (3.5mmx3.5mm) package.