MP2733

The MP2733 is a 4.5A, highly-integrated switch-mode battery charger management device for single-cell Li-ion or Li-polymer batteries. This device works with narrow voltage DC (NVDC) system power path management and is well-suited 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 interface allows the device to be flexibly controlled with configurable charging and system settings.

The MP2733 supports a wide range of input sources, including standard USB host ports and high-powered wall adapters with fast-charge capabilities. The MP2733 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 3A.

The MP2733 initiates and completes a charging cycle without software control. It automatically detects the battery voltage and charges the battery in different stages. Charging automatically terminates when a full charge is detected. When the charged battery drops below the recharge threshold, the charger automatically begins another charging cycle.

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

Advantages Include: