What this LiFePO4 charge controller does on the board
The MCP73223-C2SI/MF is a dedicated charge management controller for Lithium Iron Phosphate (LiFePO4) battery packs, handling 1 to 2 series cells with a nominal pack voltage of 7.2V. Charge current is constant and programmable up to a maximum of 1.1A, with programmable current and timer features that let you set the charge profile via external components.
Housed in a 10-VFDFN Exposed Pad package (3x3 mm DFN), the MCP73223-C2SI/MF is a surface-mount part with a supplier device package of 10-DFN (3x3). Supplied in Tube format, not tape-and-reel — factor this into the pick-and-place setup if the line expects reel-fed parts.
Active production and compliance posture
ROHS3 Compliant per the manufacturer's declaration, with no exemptions that would block EU-market shipments. Supply voltage max is 16V — the input rail should be regulated to stay below that ceiling, especially during hot-plug or transient events where the input capacitor rings above the supply.