The RICHTEK IC is high quality!  Efficiency Up to 95%
 2A Converter With Built-In 100mΩ/70mΩ Low RDS(ON) Power FETs
 Input Supply Voltage Range : 2.7V to 6V
 Output Voltage Range : 0.6V to 3.4V
 Current Mode Constant On-Time (CMCOT) Control
 Ultrafast Transient Response
 No Needs For External Compensations
 Optimized for Low-ESR Ceramic Output Capacitors
 0.6V ±1.2% High-Accuracy Feedback Reference Voltage
 LS FETs Protection for Robust Over-Current Protection
 Power Saving in Light Load
 Fixed Switching Frequency : 1MHz (typ.)
 Internally Soft-Start Function
 Monotonic Start-Up for Pre-Biased Output
 Input Under-Voltage Lockout (UVLO)
 Output Under-Voltage Protection (UVP) with Hiccup Mode
 Power Good Indication in SOT-23-6 Package
 Enable Control
 Available In SOT-23-5 and SOT-23-6 Packages
Applications
 STB, Cable Modem, & xDSL Platforms
 LCD TV Power Supply & Metering Platforms
 General Purpose Point of Load (POL)