600mA, Ultra-Fast Transient Response Linear Regulator


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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.


  • Wireless LAN Card/Keyboard/Mouse
  • Battery-Powered Equipment
  • XDSL Router
  • PCMCIA Card
Key Spec.
Status Active
Vin (min) (V) 2.8
Vin (max) (V) 5.5
Vout (min) (V) 1.2
Vout (max) (V) 1.2
Output Adj. Method Fixed
Accuracy (+/- %) 3
Iout (max) (mA) 600
Iq (typ) (uA) 220
Vdropout @ rated current (typ) (mV) 300 @ 0.6A
Cout Type Ceramic
Features OCP;Stable with Ceramic Capacitor
Package Type SOT-89
  • 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
TitleLast UpdateShareDownload
600mA, Ultra-Fast Transient Response Linear Regulator2009/07/08
Title Last Update ShareDownload
600mA, Ultra-Fast Transient Response Linear Regulator 2015/05/19