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RT2872 - Synchronous Step-Down Converter

Description

The RT2872 is a high efficiency, current-mode synchronous step-down DC/DC converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V.

The device integrates 105mΩ high-side and 80mΩ low-side MOSFETs to achieve high conversion efficiency.

Features

  • 4.5V to 36V Input Voltage Range.
  • 3A Output Current.
  • Internal N-MOSFETs.
  • Current Mode Control.
  • Frequency Operation : 300kHz to 1MHz.
  • Adjustable Output Voltage from 0.8V to 30V.
  • High Efficiency Up to 95%.
  • Stable with Low ESR Ceramic Output Capacitors.
  • Cycle-by-Cycle Current Limit.
  • Input Under-Voltage Lockout.
  • Output Under-Voltage Protection.
  • Thermal Shutdown.
  • AEC-Q100 Grade 3 Certification.
  • RoHS Compliant and Halogen Free Appl.

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Datasheet Details

Part number RT2872
Manufacturer Richtek
File Size 254.40 KB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT2872 Datasheet

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Full PDF Text Transcription

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Reference Design Sample & Design Tools Buy ® RT2872 3A, 36V, Synchronous Step-Down Converter General Description The RT2872 is a high efficiency, current-mode synchronous step-down DC/DC converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V. The device integrates 105mΩ high-side and 80mΩ low-side MOSFETs to achieve high conversion efficiency. The current-mode control architecture supports fast transient response and simple external compensation. A cycle-by-cycle current limit function provides protection against shorted output and an internal soft-start eliminates input current surge during start-up.
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