max889MAX889: 301Kb 8P: Hh-Frequency, Regulated, 200mA, Inverting Charge Pump More results. About Maxim Integrated Products: Maxim Integrated Products is a publicly traded companyThe MAX889 inverting charge pump delivers a regulated. negative output voltage at loads of up to 200mA. The. device operates with inputs from 2.7V to 5.5V to produce. an adjustable,