UNISONIC TECHNOLOGIES CO.
, LTD U8021
Preliminary CMOS IC
VOLTAGE MODE PWM CONTROLLER WITH LINEAR POWER
REGULATOR
DESCRIPTION
The UTC U8021 provides the control and protection features necessary for a synchronous buck converter and a linear
regulator in high performance graphic card applications.
The UTC U8021 is designed to directly drive the high and low MOSFETs of the buck converter.
It allows the converter to operate with 4V~25V power rail and as low as 0.
5V output.
The UTC U8021 is capable to drive a N-type MOSFET in a linear
regulator with as low as 0.
5V output.
The UTC U8021 features soft-start, UVLO, and OCP.
The UTC U8021 monitors the output current by using the Rdson of the low ...