MAXREFDES1151, Supercapacitor dv/dt Suppression Circuit Reference Design

MAXREFDES1151, Reference Design includes two parts, the first part uses the MAX406 to charge the supercapacitors with 1A constant current, the second part uses the MAX1725 and MAX985 to realize dv/dt suppression. The MAX406 is a single, low-voltage, micropower, precision op amp designed for battery-operated systems. It features a supply current of less than 1.2 uA that is relatively constant over the entire supply range, which represents a 15 to 20 times improvement over industry-standard micropower op amps. A unique output stage enables this op amp to operate at ultra-low supply current while maintaining linearity under loaded conditions. In addition, the output is capable of sourcing 1.8mA when powered by a 9V battery