The MIC23158 is a high-efficiency, 3MHz, dual, 2A synchronous buck regulator with HyperLight Load® mode, power good output indicator, and programmable soft start. HyperLight Load provides very high efficiency at light loads and ultrafast transient response which makes the MIC23158 perfectly suited for supplying processor core voltages. An additional benefit of this proprietary architecture is very low output ripple voltage throughout the entire load range with the use of small output capacitors. The 20-pin 3mm x 4mm MLF® package saves precious board space and requires seven external components for each channel. The MIC23158 is designed for use with a very small inductor, down to 0.47µH, and an output capacitor as small as 2.2µF that enables a total solution size, less than 1mm in height. The MIC23158 has a very low quiescent current of 45µA and achieves a peak efficiency of 94% in continuous conduction mode. In discontinuous conduction mode, the MIC23158 can achieve 83% efficiency at 1mA. The MIC23158 is available in a 20-pin 3mm x 4mm MLF package with an operating junction temperature range from -40°C to +125°C.2.7V to 5.5V input voltage Adjustable output voltage (down to 1.0V) 2 independent 2A outputs Up to 94% peak efficiency 83% typical efficiency at 1mA 2 independent power good indicators Independent programmable soft start 45µA typical quiescent current 3MHz PWM operation in continuous conduction mode Ultra-fast transient response Fully-integrated MOSFET switches Output pre-bias safe 0.1µA shutdown current Thermal-shutdown and current-limit protection 20-pin 3mm x 4mm MLF package -40°C to +125°C junction temperature range