max889MAX889 includes soft-start, shutdown control, short-cir-cuit, and thermal protection. The oscillator, control circuitry, and four power MOSFET. switches are included on-chip. The charge pump runs. continuously at the operatingThe 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 smaller