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RT8251 - 570kHz Step-Down Converter

Description

The RT8251 is a monolithic step-down switch mode converter with a built-in internal power MOSFET.

It achieves 5A continuous output current over a wide input supply range with excellent load and line regulation.

Current mode operation provides fast transient response and eases loop stabilization.

Features

  • z Wide Operating Input Voltage Range : 4.75V to 24V z Adjustable Output Voltage Range : 0.8V to 15V z Output Current up to 5A z 25μA Low Shutdown Current z Internal Power MOSFET : 70mΩ z High Efficiency up to 95% z 570kHz Fixed Switching Frequency z Stable with Low ESR Output Ceramic Capacitors z Thermal Shutdown Protection z Cycle-By-Cycle Over Current Protection z RoHS Compliant and Halogen Free.

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Datasheet preview – RT8251

Datasheet Details

Part number RT8251
Manufacturer Richtek
File Size 300.49 KB
Description 570kHz Step-Down Converter
Datasheet download datasheet RT8251 Datasheet
Additional preview pages of the RT8251 datasheet.

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Full PDF Text Transcription

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® RT8251 5A, 24V, 570kHz Step-Down Converter General Description The RT8251 is a monolithic step-down switch mode converter with a built-in internal power MOSFET. It achieves 5A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. The RT8251 provides protection functions such as cycle-by-cycle current limiting and thermal shutdown. In shutdown mode, the regulator draws 25μA of supply current. Programmable soft-start minimizes the inrush supply current and the output overshoot at initial startup. The RT8251 requires a minimum number of external components. The RT8251 is available in WQFN-16L 3x3 and SOP-8 (Exposed Pad) packages.
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