max889The MAX889 is a hh-frequency, regulated, 200mA, inverting charge pump that produces a negative output voltage from inputs of 2.7V to 5.5V. It features a logic-controlled shutdownIntegrated Cellular RF-Section Power-Management IC, MAX8890 Datasheet, MAX8890 circuit, MAX8890 data sheet : MAXIM, , Datasheet, Datasheet search site for Electronic