View hm3420 datasheet:

 inductors, while still providing low output ripples. This low noise output along with its excellent efficiency GENERATION DESCRIPTION achieved by the internal synchronous rectifier, making The HM3420 is a high-efficiency, DC-to-DC step-down HM3420 an ideal green replacement for large power switching regulators, capable of delivering up to 2A of consuming linear regulators. Internal soft-start control output current. The device operates from an input voltage circuitry reduces inrush current. Short-circuit and range of 2.5V to 6.0V and provides an output voltage thermal-overload protection improves design reliability. from 0.6V to VIN, making the HM3420 ideal for low The HM3420 is available in a SOT23-6/SOT23-5 voltage power conversions. Running at a fixed frequency