4.5A I2C Controlled Buck Charger with NVDC Power Path and USB OTG

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Product Description

The MP2629 is a 4.5A highly-integrated switching-mode battery charge management device  for single-cell Li-ion or Li-polymer battery. This device with NVDC system power path management is suitable for a variety of applications such as smartphone, 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 with charging and system settings allow the device to be flexibly controlled.

The MP2629 supports 5V input sources, including standard USB host port, USB charging port and USB compliant wall adapter. The MP2629 provides USB input type detection via DP/DM pins. 

The MP2629 supports USB On-The-Go operation by supplying 5V on input bus with output current limit up to 3.0A.

The MP2629 initiates and completes a charging cycle without software control. It automatically detects battery voltage and charges battery in different stages. The charger automatically terminates when battery charged fully is detected. When the fully battery drops below recharge threshold, the charger automatically starts another charging cycle.

The charger provides various safety features for battery charging and system operations, including charging safety timer, battery temperature monitoring and overvoltage/over current protections. When any fault occurs, the charger asserts an INT to host. The device provides BATFET disable control to enter ship mode and system reset function via DISC pin.

The MP2629 is available in a QFN-26 (3.5mmx3.5mm) package.

Advantages Include:

  • Small 3.5mmx3.5mm solution size
  • High efficiency: Over 94% efficiency at 2A charge current, 92.5% efficiency at 3A charge current
  • Advanced safety features including JEITA NTC Monitoring, Safety & Watchdog Timers, Input & Output OCP/OVP, Thermal Regulation
  • Integrated ADC for VIN, IIN, VBATT, VSYS, ICHG, and TNTC

Product Features

•3.7V to 5.8V Operating Input Voltage
•22V Absolute Max Input Voltage
•NVDC Power Path with Up to 3A Input Current Limit and 4.5A Charge Current 
•Integrated USB BC1.2 Detection
•Programmable Input Voltage and Current Limit Regulation
•Up to 3A OTG Current Limit with Adjustable 4.8V to 5.5V Output Voltage
•Fully Programmable Charging Parameters Over I2C
•Integrated 8-Bit ADC (VIN, IIN, VBatt, IBatt, ISYS, TNTC)
•Advanced Safety Features Include: Programmable JEITA NTC Monitoring, Safety & Watchdog Timers, Input & Output OCP/OVP, Thermal Regulation
•Integrated Battery FET with Shipping Mode and Reset Control
•Battery IR Compensation for Faster Charge Time


  • Operating Vin (min) (V)3.2
  • Operating Vin (max) (V)5.8
  • Absolute Vin (max) (V)22
  • Cells1
  • GradeCatalog
  • Special FeaturesBattery OCP, Battery UVP, Input Current Regulation, Input Voltage Regulation, Integrated ADC, JEITA Batt NTC Monitor, Narrow Voltage Power Path, One-Time Programmable Memory, Power Path, Shipping Mode, Thermal Regulation, USB Compatible, USB OTG (Boost Mode), BC1.2 Detection
  • NVDCYes
  • Vbatt (max) (V)4.67
  • Vbatt (min) (V)3.4
  • Battery TypeLi-Ion, Li-FePO4, Li-Polymer
  • Iotg (A)3
  • Iin (max) (A)3.25
  • Icharge (max) (A)4.52
  • Votg (max) (V)5.5
  • TopologyBuck
  • Control InterfaceI2C, Standalone
  • PackageQFN-26 (3.5x3.5)
  • TimerYes
  • NTC MonitoringNo
  • EN ControlNo
  • Charge Status Yes
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.