Monolithic Power Systems

Switching Chargers

24V Input, 2A, 600kHz, 4S Cell Switching Li-Ion Battery Charger
Switching Chargers
The MP26124 is a monolithic, DC/DC, step-down, switching charger for 4-series cell Li-ion battery packs. The MP26124 has an integrated high-side power MOSFET that can output a charge current up to 2A and also has peak-current-mode control for fast loop response and easy compensation.

The MP26124 uses a sense resistor to control a programmable charge current and regulates the charge current and charge voltage accurately using two control loops.

The MP26124 has multiple fault condition protections including 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 stop the charging cycle when the timer expires.

The MP26124 requires a minimal number of readily available external components and is available in a QFN-16 (4mmx4mm) package.

  • Charge 4S Cell Li-Ion Battery Packs
  • Up to 24V Operation Voltage
  • Programmable Charging Current up to 2A
  • ±0.75% VBATT Accuracy
  • 0.2Ω Integrated Power MOSFET
  • Up to 90% Efficiency
  • Fixed 600kHz Frequency
  • Preconditioning for Fully Depleted Batteries
  • Charging Status Indicator
  • Input Supply Fault Indicator
  • Thermal Shutdown
  • Cycle-by-Cycle Over-Current Protection (OCP)
  • Battery Temperature Monitor and Protection
  • Available in a QFN-16 (4mmx4mm) Package

*MPS Authorized Distributor
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