DESCRIPTION The IRU3007 controller IC is designed to meet the Intel Pentium Specification IIa microprocessor applications as well as the next generation family of P6 processors. The IRU3007 provides a single chip controller IC for the core voltage, LDO controller GTL+ and a 200mA voltage regulator to power the internal clock while required for Pentium II applications. It also contains a switch controller to convert the 5V to 3.3V regulator for use on the board whether the power supply is ideal for use in applications or does not depend on the ATX power supply's 3.3V output. These devices feature a patented topology in combination with some external components, shown in the typical application circuit, that will provide over 14A of output for an on-board DC/DC current conversion while automatically providing the correct output voltage through a 5-bit internal DAC. The IRU3007 also features lossless current sensing while switching using an RDS(ON) sense resistor as a high-side power MOSFET, an internal current-limited clock supply, a power-good window comparator, switching its open collector output low-power Usually, any one output is outside a pre-programmed window. Other features of the device are: voltage-locked 5V and 12V supplies, an externally programmable soft-start function, an external resistor programmed by the oscillator frequency, over-voltage protection (OVP) circuitry, two switching outputs, and an internal thermal shutdown .

Features Provides a single chip solution for Vcore GTL+, switching power supply and 3.3V clock on the board 2nd switching for simple control board 3.3V power supply
200mA on-board LDO regulator designed to meet Intel's VRM8.2 and 8.3 specifications Section IIa Pentium on-board DAC output voltage scheme is 1.3V to 3.5V
Linear Regulator Controller for 1.5V Board GTL + Power Lossless Short Circuit Protection Synchronous Operation Allows Maximum Efficiency Patented Architecture Allows Fixed Frequency Operation, and Dynamic Load at 100% Duty Cycle Direct Drive Totem Pole Driver External Power MOSFET
Monitors all power good outputs function Overvoltage protection circuitry protects switched outputs and generates a fault output thermal shutdown