EMP3421|2A, 4.5V-20V Input,1MHz Synchronous Step-Down Converter

EMP3421|2A, 4.5V-20V Input,1MHz Synchronous Step-Down Converter

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General Description

EMP3421 is a fully integrated, high efficiency 2A synchronous rectified step-down converter.
The EMP3421 operates at high efficiency over a wide output current load range.
This device offers two operation modes, PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the load.
The EMP3421 requires a minimum number of readily available standard external components and is available in an 6-pin SOT23 ROHS compliant package.

Features

  • High Efficiency: Up to 96%
  • 1MHz Frequency Operation
  • 2A Output Current
  • No Schottky Diode Required
  • 4.5V to 20V Input Voltage Range
  • 0.6V Reference
  • Slope Compensated Current Mode Control for Excellent Line and Load Transient Response
  • Integrated internal compensation
  • Stable with Low ESR Ceramic Output Capacitors
  • Over Current Protection with Hiccup-Mode
  • Thermal Shutdown
  • Inrush Current Limit and Soft Start
  • Available in SOT23-6 Package
  • -40°C to +85°C Temperature Range

Applications

  • Distributed Power Systems
  • Digital Set Top Boxes
  • Flat Panel Television and Monitors
  • Wireless and DSL Modems
  • Notebook Computer

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