Features

? Provides 4 Regulated Voltages

- Microprocessor Core, AGP Bus, North/South Bridge

and/or Cache Memory, and GTL Bus Power

? Drives N-Channel MOSFETs

? Linear Regulator Drives Compatible with both MOSFET

and Bipolar Series Pass Transistors

? Simple Single-Loop Control Designs

- Voltage-Mode PWM Control

? Fast PWM Converter Transient Response

- High-Bandwidth Error Amplifiers

- Full 0 to 100 Duty Ratios

? Excellent Output Voltage Regulation

- Core PWM Output: ?1 Over Temperature

- AGP Bus PWM Output: ?3 Over Temperature

- Other Outputs: ?3 Over Temperature

? TTL-Compatible 5 Bit DAC Microprocessor Core Output

Voltage Selection

- Wide Range . . . . . . . . . . . . . . . . . . . 1.3VDC to 3.5VDC

? Power-Good Output Voltage Monitor

? Over-Voltage and Over-Current Fault Monitors

- Switching Regulators Do Not Require Extra Current

Sensing Elements, Use MOSFET’s rDS(ON)

? Small Converter Size

- Constant Frequency Operation

- 200kHz Free-Running Oscillator; Programmable From

50kHz to Over 1MHz

- Small External Component Count

Applications

? Motherboard Power Regulation for Computers