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RT7238B - 500kHz Synchronous Step-Down Converter

Description

The RT7238B/C/D/E is an advanced constant on-time (ACOTTM) mode synchronous step-down converter.

The main control loop of RT7238B/C/D/E using an advanced constant on-time (ACOTTM) mode control which provides a very fast transient response.

The RT7238B/C/D/E operates from 8V to 23V input voltage.

Features

  • Advanced Constant On-Time (ACOT) Control.
  • 8V to 23V (RT7238B/C/D/E) Input Voltage Range @ 8A Output Current.
  • ACOTTM Mode Performs Fast Transient Response.
  • ACOTTM Architecture to Enable all MLCC Output Capacitor Usage.
  • Fixed 500kHz Switching Frequency.
  • High Efficient Internal Power MOSFET Switch  27mΩ (High-Side) and 10mΩ (Low-Side).
  • Adjustable Output Voltage from 0.6V to 5V (RT7238D).
  • Fixed 3.3V (RT7238B/D) or 5V (RT7238C/E) LDO Output Supplies 70mA.

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Datasheet Details

Part number RT7238B
Manufacturer Richtek
File Size 368.15 KB
Description 500kHz Synchronous Step-Down Converter
Datasheet download datasheet RT7238B Datasheet

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Full PDF Text Transcription

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® RT7238B/C/D/E 8A, 23V, 500kHz Synchronous Step-Down Converter with 3.3V/5V LDO General Description The RT7238B/C/D/E is an advanced constant on-time (ACOTTM) mode synchronous step-down converter. The main control loop of RT7238B/C/D/E using an advanced constant on-time (ACOTTM) mode control which provides a very fast transient response. The RT7238B/C/D/E operates from 8V to 23V input voltage. For the RT7238D, the output voltage can be adjusted between 0.6V to 5V. Ordering Information RT7238 Package Type QUF : UQFN-10L 3x3 (FC) (U-Type) Lead Plating System G : Green (Halogen Free and Pb Free) Output Voltage B : 3.35V C : 5.1V D : Adjustable E : 5V Note : Richtek products are :  RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
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