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RT5733 - 2.4MHz 3.5A Step-Down Converter

Datasheet Summary

Description

The RT5733 is a step-down switching voltage regulator that delivers a digitally programmable output from an input voltage supply of 2.5V to 5.5V.

The output voltage is programmed through an I2C interface and is capable of operating up to 3.4MHz.

Features

  • Programmable Output Voltage Range.
  • 0.27V to 1.4V, 6.25mV/bit.
  • Programmable Slew Rate for Voltage Transitions.
  • Steady 2.4MHz Switching Frequency.
  • Fast Load Transient.
  • Continuous Output Current Capability: 3.5A.
  • 2.5V to 5.5V Input Voltage Range.
  • Digitally Programmable Output Voltage.
  • I2C-Compatible Interface Up to 3.4Mbps.
  • PFM Mode for High Efficiency at Light Load.
  • Quiescent Current in PFM Mode: 45A (Typical).
  • Input Undervoltage Lockou.

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Datasheet preview – RT5733

Datasheet Details

Part number RT5733
Manufacturer Richtek
File Size 1.35 MB
Description 2.4MHz 3.5A Step-Down Converter
Datasheet download datasheet RT5733 Datasheet
Additional preview pages of the RT5733 datasheet.

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Full PDF Text Transcription

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RT5733 2.4MHz 3.5A Step-Down Converter with I2C Interface General Description The RT5733 is a step-down switching voltage regulator that delivers a digitally programmable output from an input voltage supply of 2.5V to 5.5V. The output voltage is programmed through an I2C interface and is capable of operating up to 3.4MHz. Using a proprietary architecture with synchronous rectification, the RT5733 is capable of delivering continuous 3.5A, maintaining that efficiency at load currents as low as 10mA. The regulator operates at a nominal fixed frequency of 2.4MHz, which reduces the external component counts. Additional output capacitance can be added to improve regulation during load transients without affecting stability.
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