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 operatingMAX889 Features o 200mA Output Current o Up to 2MHz Switching Frequency o Small Capacitors (1µF) o +2.7V to +5.5V Input Voltage Range o Adjustable Regulated Negative