28V, 1A Li + Linear Battery Charger with 10% Battery-Full Threshold and Flexible NTC Interface

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Product Description

The MP26121 is a linear, high performance single cell Li-Ion/Li-Polymer battery charger. By integrating high voltage input protection into the charger IC, the MP26121 can tolerate an input surge up to +28V. The device features constant current (CC) and constant voltage (CV) charging modes with programmable charge currents (200mA to 1A), current blocking, and trickle charge. The device also provides fault and charge status indications to the system. For guaranteed safe operation, the MP26121 reduces charge current when the device reaches high temperature (due to limited PCB space). Other safety features include battery temperature monitoring and programmable timer to complete the charging cycle. The MP26121 is available in 10-pin 3mm x 3mm QFN packages.

Product Features

  • Interfaces to Many NTC Resistor Values
  • Proprietary VIN Surge Protection up to 28V
  • Programmable Charge Current up to 1A
  • 1% Voltage Accuracy
  • 10% Battery-Full Threshold
  • No Reverse Blocking Diode Required
  • Intelligent Thermal Management
  • Trickle Charge
  • 7V Input OVP
  • Auto Recharge
  • Charge-Timer
  • Fault and Charge Status Indicators


  • Icharge (max) (A)1
  • Vbatt (max) (V)4.2
  • Operating Vin (max) (V)6.7
  • Absolute Vin (max) (V)28
  • Vbatt (min) (V)4.2
  • NTC MonitoringYes
  • Operating Vin (min) (V)2.5
  • Special FeaturesBatt NTC Monitor, Thermal Regulation, USB Compatible
  • Cells1
  • GradeCatalog
  • Battery TypeLi-Ion, Li-Polymer
  • Control InterfaceStandalone
  • TimerYes
  • Power PathNo
  • USB ModeNo
  • PackageQFN-10 (3x3)
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.