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RT7272B - Synchronous Step-Down Converter

Description

The RT7272B 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.

Features

  • 4.5V to 36V Input Voltage Range.
  • 3A Output Current.
  • Internal N-MOSFETs.
  • Current Mode Control.
  • Fixed Switching Frequency Operation: 500kHz.
  • 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 Undervoltage Lockout.
  • Output Undervoltage Protection.
  • Over-Temperature Protection.
  • Adjustable Current Limit.
  • Power Saving Mode for High.

📥 Download Datasheet

Datasheet Details

Part number RT7272B
Manufacturer Richtek
File Size 1.45 MB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT7272B Datasheet
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Full PDF Text Transcription

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RT7272B 3A, 36V, 500kHz Synchronous Step-Down Converter 1 General Description The RT7272B 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 RT7272B integrates a 150m on-resistance of high-side MOSFET and an 80m on-resistance of low-side MOSFET to achieve high conversion efficiency up to 95%. The current mode control architecture supports fast transient response and simple compensation circuit. A cycle-by-cycle current limit function provides protection against shorted output and an internal softstart eliminates input current surge during start-up.
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