US3005

The US3005series of controller ICs are specifically designed to meet Intel specification for Pentium IIIä microprocessor applications as well as the next generation P6 family processors. The IC US3005 provides a single chip controller IC for the Vcore , GTL+ and clock supplies required for the Pentium III applications. These devices feature a patented topology that in combination with a few external components as shown in the typical application circuit ,will provide in excess of 20A of output current for an on- board DC/DC converter while automatically providing the right output voltage via the 5 bit internal DAC meeting the latest VRM specification .These US3005 also feature, loss less current sensing by using the Rds-on of the high side Power MOSFET as the sensing resistor, a Power Good window comparator that switches its open collector output low when the output is outside of a ±10% window. Other features of the US3005 are ; Undervoltage lockout for both 5V and 12V supplies, an external programmable soft start function as well as programming the oscillator frequency by using an external capacitor.