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