max889max8892.7~5.5v-2.5v~vin200ma 0.5mhz1mhz2mhztsThe MAX889 is a hh-frequency, regulated, 200mA, inverting charge pump that delivers a negative output voltage from a positive input. It has an adjustable output range, a logic-controlled shutdown mode, and a 0.1µA quiescent current.