3.6V/Cell Switching Li-lon Charger

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Product Description

The MP2623 is a monolithic, DC-DC, step-down, switching charger for a 1-or-2-cell serial LiFePO4 battery. It has an integrated high-side power MOSFET that can output up to a 2A charge current. It also has peak-current–mode control for fast loop response and easy compensation.  The MP2623 uses a sense resistor to control a programmable charge current, and accurately regulates the charge current and the charge voltage using two control loops.  The MP2623 has multiple fault-condition protections that include cycle-by-cycle current limiting and thermal shutdown. Other safety features include battery temperature monitoring and protection, charge status indication and a programmable timer to halt charging after a set time period.  The MP2623 requires a minimal number of readily-available external components.  The MP2623 is available in a 4mm×4mm 16-pin QFN package.

Product Features

  • Charges 1- and 2-Cell LiFePO4 Battery Packs
  • Wide Operating-Input Range
  • Programmable Charging Current of up to 2A
  • ±0.75% VBATT Accuracy
  • 0.2Ω Integrated Power MOSFET
  • Up to 90% Efficiency
  • Fixed 1.1MHz Frequency
  • Preconditioning for Fully-Depleted Batteries
  • Charging Status Indicator
  • Input Supply Fault Indicator
  • Thermal Shutdown
  • Cycle-by-Cycle Over-Current Protection
  • Battery Temperature Monitor and Protection


  • Operating Vin (min) (V)3.5
  • Operating Vin (max) (V)24
  • Absolute Vin (max) (V)26
  • Cells1, 2
  • GradeCatalog
  • NVDCNo
  • Vbatt (max) (V)7.2
  • Vbatt (min) (V)3.6
  • Battery TypeLi-FePO4
  • Iin (max) (A)0.9
  • Icharge (max) (A)2
  • TopologyBuck
  • fsw (kHz)1100
  • Control InterfaceStandalone
  • Special FeaturesBattery OCP, Battery UVP, Batt NTC Monitor, Input Bypass Power Path, Input Current Regulation, LED Fuel Gauge, Power Bank Output Mode, Thermal Regulation, USB BC1.2 Detection, USB Compatible, USB OTG (Boost Mode), VIN Regulation
  • PackageQFN-16 (4x4)
  • TimerYes
  • NTC MonitoringYes
  • EN ControlYes
  • 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.