max889The MAX889 is available with an operating frequency of 2MHz (T version), 1MHz (S version), or 0.5MHz (R version). The hher switching frequency devices allow the use of smallerOrder , ships MAX889TESA+ – Charge Pump Switching Regulator IC Negative Adjustable -2.5V 1 Output 200mA 8-SOIC (0.154, 3.90mm Width) from Analog Devices