The circuit of MAX713EVKIT uses the error amplifier at the CC pin as a comparator, please see below internal circuit.
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Ifast x Rsense x Av = Vref (2.0V) as the trigger threshold. MAX713EVKIT circuit shown configured to charge two cells at 1A. Lower charge currents and a different number of cells can be accommodated simply by changing RSENSE and PGM0–PGM3 connections.
Ifast x Rsense x Av = Vref (2.0V) as the trigger threshold. MAX713EVKIT circuit shown configured to charge two cells at 1A. Lower charge currents and a different number of cells can be accommodated simply by changing RSENSE and PGM0–PGM3 connections.