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Battery Charger for 1 Cell of LiFePO4 battery, 4V input, 3.6V/1.1 A charge, DFN-10

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MCP73123-22SI/MF   Datasheet
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Product Overview

The MCP73123-22SI/MF is a single cell highly integrated LiFePO4 (lithium iron phosphate) Battery Charge Management Controller for use in space-limited applications. The MCP73123 can accept an absolute maximum of 18V input and provides a 6.5V overvoltage protection. The output current can is programmable to be between 130mA and 1.1A. The MCP73123 is specified over the ambient temperature range of -40 to +85°C. The MCP73123 employs a constant current/constant voltage charge algorithm. The 3.6V per cell factory preset reference voltage simplifies design with 2V preconditioning threshold. The MCP73123 also limits the charge current based on die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability.
  • Integrated input overvoltage protection
  • Integrated pass transistor
  • Integrated current sense
  • Integrated reverse discharge protection
  • Constant current/constant voltage operation with thermal regulation
  • 4.15V Under-voltage lockout (UVLO)
  • Preconditioning of deeply depleted cells 10% or disable
  • Integrated precondition timer, 32 minutes or disable
  • Automatic end-of-charge control
  • Factory preset charge status output - on/off or flashing
  • Soft start


Industrial, Power Management


ESD sensitive device, take proper precaution while handling the device.

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Technical Documents (2)

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CAD Models and drawings are provided to you on a revocable limited licence for your internal use only but remain the property of the manufacturer who retain all intellectual property rights and ownership. They are provided to assist you in decision making and as design guide but are not guaranteed to be error free, accurate or up to date and is not intended to be taken as advice.
Use of these CAD models and other options provided are downloaded and used entirely at your own risk and by continuing you confirm acceptance of the above.

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Back order today stock arriving week commencing 2/18/23

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