DESCRIPTION
The US3033 IC combines a switching controller and a linear regulator controller all in a compact 8 pin surface mount package, providing a total solution for dual supply processor applications such as an Intel P55C ™, AMD K6™, as well as Cyrix 6X86L™ and the M2™ processors.
   
FEATURES
■ LDO Controller allows the use of a low cost
    pass transistor for the I/O supply
■ 8 pin SOIC combines switching and linear
    controller
■ Internal Pre-regulator Eliminates Cross talk
    between Switching & Linear regulators
■ Automatic shut down of the linear regulator
    when connected to the Vcc2 Det pin
■ On board MOSFET driver
■ Fastest transient response of any controller
    method. ( 0 to 100% Duty Cycle in 100 nS )
■ 1% internal voltage reference
■ Internal Under Voltage Lockout protects
    MOSFET during start-up
   
APPLICATIONS
■ Dual supply low voltage processor applications,
    such as: P55C™,CYRIX M2™, POWER PC™ and
    AMD K6™
■ Simple 5V to 3.3V switcher for Pentium with AGP
    or Pentium II™ applications