POWER MANAGEMENT Description
SC1172 & SC1173
Programmable Synchronous DC/DC Converter with LDO Controller
Features
The SC1172/3 combines a synchronous voltage mode controller with a low-dropout linear
regulator providing most of the circuitry necessary to implement two DC/DC converters for powering advanced microprocessors such as Pentium® II .
The SC1172/3 switching section features an integrated 5 bit D/A converter, pulse by pulse current limiting, integrated power good signaling, and logic compatible shutdown.
The SC1172/3 switching section operates at a fixed frequency of 200kHz, providing an optimum compromise between size, efficiency and cost in the intended application areas.
The in...