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4A, 2MHz, Synchronous Step-Down Converter

RT8074

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The RT8074 is a high efficiency synchronous, step-down DC/DC converter. Its input voltage range is from 2.7V to 5.5V and provides an adjustable regulated output voltage from 0.8V to 5V while delivering up to 4A of output current.

The internal synchronous low on-resistance power switches increase efficiency and eliminate the need for an external Schottky diode. The default switching frequency is set at 2MHz, if the RT pin is left open. It can also be varied from 200kHz to 2MHz by adding an external resistor. Current mode operation with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors.

Applications

  • LCD TV and Monitor
  • Notebook Computers
  • Distributed Power Systems
  • IP Phones
  • Digital Cameras
Datasheet
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4A, 2MHz, Synchronous Step-Down Converter2010/12/02
Reliability
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4A, 2MHz, Synchronous Step-Down Converter 2015/05/19
Technical Documents
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Richtek Wide Input Voltage Range DC/DC Power Solutions for Industrial, Automotive and LED lighting applications2019/12/12
Videos
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How to estimate control loop bandwidth from the transient response time?2017/03/30 755
Reference Design
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Richtek Load Transient Tool2019/01/09
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