The RICHTEK IC is high quality!  Input Supply Voltage Range : 4.5V to 18V
 3A Converter with Built-In 100m/50m Low RDS(ON) Power FETs
 Advanced Constant On-Time (ACOTTM) Control for Ultrafast Transient Response
 Fixed Switching Frequency : 500kHz (SOT23-6) or 650kHz (SOT23-8)
 Optional for Operation Modes :
 Automatically Power Saving Mode (PSM) (RT6214A)
 Forced PWM Mode (RT6214B)
 Optimized for Low-ESR Ceramic Output Capacitors
 1.5% High-Accuracy Feedback Reference Voltage
 Output Voltage Range : up to 6.5V
 Internal fixed Soft-Start (typ. 1ms) for SOT-23-6
 Externally Adjustable Soft-Start for SOT-23-8
 Monotonic Start-Up for Pre-biased Outputs
 Both HS/LS FETs Protection for Robust Over Current Protection
 Input Under-Voltage Lockout (UVLO)
 Output Under-Voltage Protection (UVP) with Hiccup Mode
 Over-Temperature Protection (OTP) (Thermal Shutdown)
 Enable Control
 Power Good Indication for SOT-23-8
 RoHS Compliant and Halogen Free
 Available in TSOT-23-6 or TSOT-23-8 Package