2A, 18V, 340kHz Synchronous Step-Down Converter


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The RT7237A is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 2A output current from a 4.5V to 18V input supply. The RT7237A's current mode architecture and external compensation allow the transient response to be optimized over a wide input range and loads. Cycle-by-cycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start-up. The RT7237A also provides under voltage protection and thermal shutdown protection. The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems. The RT7237A is available in an SOP-8 (Exposed Pad) package.


  • Wireless AP/Router
  • Set-Top-Box
  • Industrial and Commercial Low Power Systems
  • LCD Monitors and TVs
  • Green Electronics/Appliances
  • Point of Load Regulation of High-Performance DSPs
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2A, 18V, 340kHz Synchronous Step-Down Converter2012/02/22
Technical Documents
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Richtek Selection Guide [Oct., 2020]2020/12/30
Compensation Design for Peak Current-Mode Buck Converters2016/07/07
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How to estimate control loop bandwidth from the transient response time?2017/03/30 1379
Design Tool
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Richtek Designer™ Web Simulation Tool : RT7237AHGSP2020/09/23
Richtek Designer™ Web Simulation Tool : RT7237ALGSP2020/09/23
Richtek Designer™ Web Simulation Tool : RT7237ANGSP2020/09/23
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT7237AHGSPPSOP-82500 Request Buy from Distributor