MP2623

Active
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?ode 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?mm 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
  • ?.75% VBATT Accuracy
  • 0.2O 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

Parametrics

  • Operating Vin (min) (V)4.5
  • Operating Vin (max) (V)24
  • Cells1-2
  • GradeCatalog
  • NVDCNo
  • Vbatt (max) (V)3.6
  • Battery TypeLi-FePO4
  • Icharge (max) (A)2
  • fsw (kHz)1100
  • PackageQFN-16 (4x4)
  • Timer
  • NTC Monitoring
  • EN Control
  • Internal LDO
  • Charge Status Yes