Monolithic Power Systems (MPS) MP2733 Battery Charger Management Devices

Monolithic Power Systems (MPS) MP2733 Battery Charger Management Devices

Monolithic Power Systems (MPS) MP2733 Battery Charger Management Devices are highly integrated switchmode battery charger management devices for single-cell Li-ion or Li-polymer batteries. These devices work with Narrow Voltage DC (NVDC) system power path management. The MP2733 devices feature a low-impedance power path that optimizes efficiency, reduces battery charging time, and extends battery life. These devices support a wide range of input sources, including standard USB host ports and high-powered wall adapters with fast-charge capabilities. The I2C interface allows the device to be flexibly controlled with configurable charging and system settings.

The MP2733 devices initiate and complete 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. These devices offer various safety features for battery charging and system operations, including a charging safety timer, battery temperature monitoring, Over-Voltage Protection (OVP), and Over-Current Protection (OCP). Typical applications include smartphones, tablets, wireless cameras, and other portable devices.


  • 3.7V to 16V operating input voltage range
  • Up to 22V sustainable voltage
  • High-efficiency, 4.5A, 1.35MHz buck charger with up to 92% charge efficiency with 3A charge current:
    • Configurable D+/D- for flexible fast charge protocol support
  • USB OTG with 4.8V to 5.5V adjustable output:
    • Up to 3A output and up to 93% efficiency with 1.5A output
  • NVDC power path management:
    • Instant-on works with no battery or deeply discharged battery
    • Ideal diode operation in battery supplement mode
  • High battery discharge efficiency with 14mΩ BATTFET up to 8.5A
  • I2C interface for flexible system parameter setting and status reporting
  • Fully integrated MOSFETs and current sensing
  • Dedicated DISC pin to control shipping mode and system reset
  • 13µA low battery leakage current in shipping mode
  • Integrated ADC monitors input voltage and current, battery voltage, charge current, system voltage, and battery temperature
  • Charging status indicator
  • Safety features:
    • Configurable JEITA for battery temp protection in charge mode, battery charging safety timer, thermal regulation and shutdown, watchdog monitoring I2C, and input/system OVP
  • Available in a QFN-26 (3.5mm x 3.5mm) package

Block Diagram

Typical Application

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Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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