PROGRAMMABLE SYNCHRONOUS DC/DC CONVERTER, DUAL LOW DROPOUT REGULATOR CONTROLLER
October 25, 1999
SC1164/5
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.
semtech.
com
DESCRIPTION
The SC1164/5 combines a synchronous
voltage mode controller with two low-dropout linear regulators providing most of the circuitry necessary to implement three DC/DC converters for powering advanced ® microprocessors such as Pentium II.
The SC1164/5 switching section features an integrated 5 bit D/A converter, pulse by pulse current limiting, integrated power good signaling, and logic compatible shutdown.
The SC1164/5 switching section operates at a fixed frequency of 200kHz, providing an optimum compromise betwe...