EC3278-2.4A/32V Syn. Rectified Step-Down Converter

General description

The EC3278 is a monolithic synchronous buck regulator.The device integrates two 90mΩ MOSFETs, and provides 2.4A of continuous load current over a wide input voltage of  4.75V  to 32V.Current mode control  provides fast transient response  and  cycle-by-cycle  current limit.An adjustable soft-start prevents inrush current at turn-on,and in shutdown mode the supply current drops to 1µA.This device, available in an SOP-8(Exposed PAD)package, provides a very compact solution with minimal external components.


•      2.4A Output Current
•      Wide 4.75V to 32V Operating Input Range
•      Integrated 90mΩ Power MOSFET Switches
•      Output Adjustable from 0.923V to 30V
•      Up to 93% Efficiency
•      Programmable Soft-Start
•      Stable with Low ESR Ceramic Output Capacitors
•      Fixed 200KHz   Frequency
•      Cycle-by-Cycle Over Current Protection
•      Input Under Voltage Lockout


•     Distributed Power Systems
•     Networking Systems
•     FPGA, DSP, ASIC Power Supplies
•     Green Electronics/ Appliances
•     Notebook Computers

Pin Configurations

Ordering info

Typical Applications circuit