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RT6345 - Asynchronous Step-Down Converter

Description

The RT6345 is a 5A, high-efficiency, peak current mode control asynchronous step-down converter.

The device operates with input voltages from 4V to 42V.

The device can program the output voltage between 0.8V to VIN.

Features

  • Wide Input Voltage Range  4.5V to 42V  4V to 42V (Soft-start is finished).
  • Wide Output Voltage Range : 0.8V to VIN.
  • 0.8V ±1% Reference Accuracy.
  • Peak Current Mode Control.
  • Integrated 70mΩ High-Side MOSFET.
  • Low Quiescent Current : 100μA.
  • Low Shutdown Current : 2.25μA.
  • Adjustable Switching : 100kHz to 2.5MHz.
  • Synchronizable Switching : 300kHz to 2.2MHz.
  • Power Saving Mode (PSM) at Light Load.
  • Low Dropout at Light Loads with Integrated Boot R.

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Datasheet preview – RT6345

Datasheet Details

Part number RT6345
Manufacturer Richtek
File Size 691.92 KB
Description Asynchronous Step-Down Converter
Datasheet download datasheet RT6345 Datasheet
Additional preview pages of the RT6345 datasheet.

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Full PDF Text Transcription

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® RT6345 42VIN, 5A, Asynchronous Step-Down Converter with Low Quiescent Current General Description The RT6345 is a 5A, high-efficiency, peak current mode control asynchronous step-down converter. The device operates with input voltages from 4V to 42V. The device can program the output voltage between 0.8V to VIN. The low quiescent current design with the integrated low RDS(ON) of high-side MOSFET achieves high efficiency over the wide load range. The peak current mode control with simple external compensation allows the use of small inductors and results in fast transient response and good loop stability. The wide switching frequency of 100kHz to 2500kHz allows for efficiency and size optimization when selecting the output filter components.
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