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RT2875D - Synchronous Step-Down Converter

Description

The RT2875D is a high efficiency, current-mode synchronous DC-DC step-down converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V.

The device integrates 95mΩ high-side and 70mΩ low-side MOSFETs to achieve high conversion efficiency.

Features

  • 3A Output Current.
  • Internal N-MOSFETs.
  • Current Mode Control.
  • Adjustable Switching Frequency : 300kHz to 2.1MHz.
  • Adjustable Current Limit : 1.5A to 6A.
  • Synchronous to External Clock : 300kHz to 2.1MHz.
  • Adjustable Output Voltage from 0.6V 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.
  • 0.6V ± 1% Reference Vol.

📥 Download Datasheet

Datasheet Details

Part number RT2875D
Manufacturer Richtek
File Size 208.93 KB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT2875D Datasheet

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Full PDF Text Transcription

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Design Tools ® RT2875D 3A, 36V, Synchronous Step-Down Converter General Description The RT2875D is a high efficiency, current-mode synchronous DC-DC step-down converter that can deliver up to 3A output current over a wide input voltage range from 4.5V to 36V. The device integrates 95mΩ high-side and 70mΩ 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 external soft-start eliminates input current surge during start-up. The RT2875D provides complete protection functions such as input under-voltage lockout, output under-voltage protection, over-current protection and thermal shutdown.
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