View cs5165h.rev2 datasheet:

CS5165H Fast, Precise 5-Bit Synchronous Buck Controller for the Next Generation Low Voltage Pentium® II Processors Description Features The CS5165H synchronous 5-bit NFET The CS5165H protects the processor dur- V2™ Control Topology buck controller is optimized to manage ing potentially catastrophic events like the power of the next generation overvoltage (OVP) and short circuit. The Dual N Channel Design Pentium®II processors. It’s V2™ control OVP feature is part of the V2™ architec- 100ns Controller Transient architecture delivers the fastest transient ture and does not require any additional Response response (100ns), and best overall voltage components. During short circuit, the regulation in the industry today. It’s fea- controller pulses the MOSFETs in a “hic- Excess