5A, 36V, 500kHz Current Mode Asynchronous Step-Down Converter


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The RT2805A is a current mode asynchronous step-down converter that achieves excellent load and line regulation. Over a wide input voltage range from 5.5V to 36V and supports output current up to 5A. The Current mode operation provides fast transient response and eases loop stabilization.

An adjustable soft-start reduces the stress on the input source at startup. In shutdown mode, the regulator draws only 25µA of supply current. The RT2805A requires a minimum number of readily available external components, providing a compact solution. The RT2805A provides protection functions inducing input under voltage lockout, cycle-by-cycle current limit, short circuit protection and thermal shutdown protection.

The RT2805A is available in the SOP-8 (Exposed Pad) package.


  • Distributive Power Systems
  • Battery Charger
  • DSL Modems
  • Pre-regulator for Linear Regulators
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5A, 36V, 500kHz Current Mode Asynchronous Step-Down Converter2012/08/10
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Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT2805AGSPPSOP-82500 Not available Buy from Distributor