View cs51313dm.rev0 datasheet:

A Low Cost 500MHz Deschutes Demonstration Board Using the CS51313 5-Bit DAC Synchronous CPU Buck Controller IC with Power-Good, Hiccup Mode Current Limit, Precision Reference, and OVP a CS51313 Demonstration Manual 10/09/98 November, 1998 - Rev. 0 CS51313DM Description ON Semiconductor’s low cost 500MHz Deschutes CPU. Additionally, the CS51313 provides adjustable CS51313 Demonstration Board is a complete power hiccup mode current limit through a discrete sense solution for motherboards that feature high perfor- resistor that can also be implemented as an inexpensive mance processors employing 5-bit supply voltage con- embedded PCB trace. The total PCB trace variation is trol and Power-Good function such as the Intel® typically ±56%, compared to ±96% using the RDS(ON) Desc