Monolithic Power Systems MP2633

Description

The MP2623 is a monolithic, DC-DC, stepdown, 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.

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

Typical applications

• Power-Bank Applications for Smart-Phone Tablet and other Portable Device
• Sub-Battery Applications

More information

• Datasheet
• IC product information