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RTQ2949-QA - Asynchronous Step-Down Converter

Description

The RTQ2949 is a 3A, high-efficiency, peak current mode control asynchronous step-down converter.

The device operates with input voltages from 4V to 42V which is optimized for automotive applications.

Features

  • AEC-Q100 Grade 1 Qualified.
  • FMEA Compliant Pinout.
  • 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 ±1.5% Reference Accuracy.
  • Peak Current Mode Control.
  • Integrated 150mΩ High-Side MOSFET.
  • Low Quiescent Current : 90μA.
  • Low Shutdown Current : 1.3μA.
  • Adjustable Switching : 100kHz to 2.5MHz.
  • Synchronizable Switching : 300kHz to 2.2MHz.
  • Power Saving Mode (PSM) at Ligh.

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Datasheet Details

Part number RTQ2949-QA
Manufacturer Richtek
File Size 632.77 KB
Description Asynchronous Step-Down Converter
Datasheet download datasheet RTQ2949-QA Datasheet
Additional preview pages of the RTQ2949-QA datasheet.

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® RTQ2949-QA 42VIN, 3A, Asynchronous Step-Down Converter with Low Quiescent Current General Description The RTQ2949 is a 3A, high-efficiency, peak current mode control asynchronous step-down converter. The device operates with input voltages from 4V to 42V which is optimized for automotive applications. The device can program the output voltage between 0.8V to VIN and is protected from load dump transients up to 65V which eases input surge protection design. 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.
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