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