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The RT7243 is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 6A output current from a 4.5V to 18V input supply. The RT7243 current-mode architecture with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. Fault condition protections include output under-voltage protection, output over-voltage protection, and over-temperature protection. The low current shutdown mode provides output disconnection, enabling easy power management in battery-powered systems.

Applications

  • High Performance Point of Load Regulation
  • Notebook Computers
  • High Density and Distributed Power Systems
Technical Documents
TitleItem TypeLast UpdateDownload
Richtek Product Selection Guide [Jan., 2026] Selection Guide2026/01/12
Richtek Featured Product Tree [Aug., 2023] Selection Guide2023/08/07
Evaluation Boards
TitleLast UpdateDownload
RT7243GQW Evaluation Board2021/01/21
Reference Design
TitleLast UpdateDownload
Richtek Load Transient Tool2022/07/25
Part NumberPackage TypePackage Qty.DistributorStockBuy From Authorized Distributor
RT7243GQWWQFN3.5x3.5-14A1,500 Digikey 8,226 Buy
0 Lead-Time: 14 weeks
Evaluation Board
Part NumberDistributorStockBuy From Authorized Distributor
EVB_RT7243GQW Digikey 1 Buy
Mouser 0 Lead-Time: 14 weeks
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