General Description
The RT9166B is a CMOS linear regulator optimized for ultra-fast transient response. The device is capable of supplying up to 600mA of output current and is optimized for CD/DVD-ROM, CD/RW or wireless communication applications. The RT9166B regulator is stable with output capacitor as low as 3.3μF. The other features include high output accuracy, current limiting protection, and high ripple rejection ratio. The RT9166B regulator is available in a 3-lead SOT-89 package.

Features
• Low Quiescent Current (Typically 220μA)
• Guaranteed 600mA Output Current
• Wide Operating Voltage Ranges : 2.8V to 5.5V
• Ultra-Fast Transient Response
• Tight Load and Line Regulation
• Current Limiting Protection
• Thermal Shutdown Protection
• Only Low-ESR Ceramic Capacitor Required for Stability
• Custom Voltage Available
• RoHS Compliant and Halogen Free

Applications
• CD/DVD-ROM, CD/RW
• Wireless LAN Card/Keyboard/Mouse
• Battery-Powered Equipment
• XDSL Router
• PCMCIA Card