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RT6283B - 500kHz Synchronous Step-Down Converter

Description

The RT6283B 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 30V.

The device integrates a 150mΩ high side and a 80mΩ low side MOSFET to achieve high conversion efficiency up to 95%.

Features

  • 4.5V to 30V Input Voltage Range.
  • 3A Output Current.
  • Internal N-MOSFETs.
  • Current Mode Control.
  • Fixed Frequency Operation : 500kHz.
  • Adjustable Output Voltage from 0.8V to 24V.
  • 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 Protection.
  • Adjustable Current Limit.
  • Power Saving Mode for High Efficie.

📥 Download Datasheet

Datasheet Details

Part number RT6283B
Manufacturer Richtek
File Size 177.80 KB
Description 500kHz Synchronous Step-Down Converter
Datasheet download datasheet RT6283B Datasheet

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Full PDF Text Transcription

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® RT6283B 3A, 30V, 500kHz Synchronous Step-Down Converter General Description The RT6283B 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 30V. The device integrates a 150mΩ high side and a 80mΩ 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 soft-start eliminates input current surge during start-up. The RT6283B provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection and thermal shutdown.
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