The ISL6522A provides complete control and protection for a DC-DC converter optimized for high-performance microprocessor applications. It is designed to drive two N-Channel MOSFETs in a synchronous rectified buck topology. The ISL6522A integrates all of the control, output adjustment, monitoring and protection functions into a single package.

Features
• Drives two N-Channel MOSFETs
• Operates from +5V or +12V input
• Simple single-loop control design
    - Voltage-mode PWM control
• Fast transient response
    - High-bandwidth error amplifier
    - Full 0-100% duty ratio
• Excellent output voltage regulation
    - 0.8V internal reference
    - ±0.5% over line voltage and temperature
• Overcurrent fault monitor
    - Does not require extra current sensing element
    - Uses MOSFETs rDS(ON)
• Converter can source and sink current
• Small converter size
    - Constant frequency operation
    - 200kHz free-running oscillator programmable from 50kHz to over 1MHz
• 14 Ld SOIC and 16 Lead 5x5mm QFN Packages
• QFN Package
    - Compliant to JEDEC PUB95 MO-220 QFN-Quad Flat No Leads-Product Outline.
    - Near Chip-Scale Package Footprint; Improves PCB Efficiency and Thinner in Profile
• Pb-Free Available (RoHS Compliant)

Applications
• Power supply for Pentium®, Pentium Pro, PowerPC® and AlphaPC™ microprocessors
• High-power 5V to 3.xV DC-DC regulators
• Low-voltage distributed power supplies