The HIP6021A provides the power control and protection for four output voltages in high-performance, graphics intensive microprocessor and computer applications. The IC integrates a voltage-mode PWM controller and three linear controllers, as well as the monitoring and protection functions into a 28 lead SOIC package.

Features
• Provides 4 Regulated Voltages
    - Microprocessor Core, AGP Bus, Memory, and GTL Bus Power
• Drives N-Channel MOSFETs
• Linear Regulator Drives Compatible with both MOSFET and Bipolar Series Pass Transistors
• Fixed or Externally Resistor-Adjustable Linear Outputs
• Simple Single-Loop Control Design
    - Voltage-Mode PWM Control
• Fast PWM Converter Transient Response
    - High-Bandwidth Error Amplifier
    - Full 0% to 100% Duty Ratio
• Excellent Output Voltage Regulation
    - Core PWM Output: ±1% Over Temperature
    - Other Outputs: ±3% Over Temperature
• TTL-Compatible 5-Bit DAC Core Output Voltage Selection
    - Shutdown Feature Removed When All Inputs High
    - Wide Range 1.3VDC to 3.5VDC
• Power-Good Output Voltage Monitor
• Over-Voltage and Over-Current Fault Monitors
    - Switching Regulator Does Not Require Extra Current Sensing Element, Uses Upper 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