Single Output Mobile-Friendly PWM Controller

The ISL6224 provides power control and protection for a single, adjustable output voltage required to power chip-sets and memory banks in high-performance notebooks and PDAs. This output voltage is adjustable in the range from 0.9-5.5V.

Features
• Adjustable output voltgage: 0.9-5.5V
• High efficiency over wide load range
    - Higher efficiency in hysteretic mode at light load
• Lossless current sense scheme
    - Uses MOSFET’s rDS(ON)
    - Optional current sense method higher precision
• Supply operation mode
    - Wide VIN range: 4V-24V
    - Single 5V system rail
• Input undervoltage lock-out on VCC pin (UVLO)
• Excellent dynamic response
    - Combined voltage feed-forward and current mode control
• Power-good indicator
• 300/600kHz switching frequency
• Thermal shut-down
• Pb-free plus anneal available (RoHS compliant)

Applications
• Mobile PCs
• Graphic cards
• Hand-held portable instruments