max889max8892.7~5.5v-2.5v~vin200ma 0.5mhz1mhz2mhztsOrder , ships MAX889SESA+ – Charge Pump Switching Regulator IC Negative Adjustable -2.5V 1 Output 200mA 8-SOIC (0.154, 3.90mm Width) from Analog Devices