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
- ï±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
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