The RICHTEK IC is high quality!  Input Voltage Range from 2.5V to 6V
 Integrated 120m and 80m FETs
 1A Output Current, up to 95% Efficiency
 100% Duty Cycle for Lowest Dropout
 1% Internal Reference Voltage
 2.2MHz Typical Switching Frequency
 Power Saving Mode for Light Loads (RT5760A/C)
 Low Quiescent Current: 25A (Typ.)
 Fast Advanced Constant On-Time (ACOT®) Control
 Internal Soft Startup (0.6ms)
 Enable Control Input
 Power Good Indicator (RT5760A/B)
 Both FETs Over-Current Protection
 Negative Over-Current Protection (RT5760B/D)
 Input Under-Voltage Lockout Protection
 Hiccup-Mode Output Under-Voltage Protection
 Over-Temperature Protection
 RoHS Compliant and Halogen Free
Applications
 Mobile Phones and Handheld Devices
 STB, Cable Modem, and xDSL Platforms
 WLAN ASIC Power / Storage (SSD and HDD)
 General Purpose for POL LV Buck Converter