MP28164GD-Z

 1.8V Minimum Start-Up Input Voltage
 1.2V to 5.5V Input Work Range
 1.5V to 5V Output Range
 4.2A Switching Current Limit
 3.3V/2A Load Capability from a 2.5V-to5.5V Input Supply
 2MHz Fixed or External Synchronous
Switching Frequency
 Selectable PSM/PWM Mode
 Typical 25μA Quiescent Current
 High Efficiency up to 95%
 Load Disconnect during Shutdown
 Internal Soft Start and Compensation
 Power Good Indicator
 Hiccup Mode for Short-Circuit Protection
(SCP)
 Over-Temperature Protection (OTP)
 Available in a Small QFN-11 (2mmx3mm)
Package.