max8893. MAX889, MAX168x and other have a VERY LIMITED CURRENT, because of their limited power dissipation to 471mW at 70C. This allows for around 40mA with MAX1680.: MAX889. . : 301Kbytes. : 8 Pages. : Hh-Frequency, Regulated, 200mA, Inverting Charge Pump. : Maxim Integrated