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RT7251A - Synchronous Step-Down Converter

General Description

The RT7251A/B is a high efficiency, monolithic synchronous step-down DC-DC converter that can operate at 340kHz/800kHz, while delivering up to 1.5A output current from a 4V to 17V input supply.

The RT7251A/B's current mode architecture allows the transient response to be optimized.

Key Features

  • 4V to 17V Input Voltage Range.
  • 1.5A Output Current.
  • Internal N-MOSFETs.
  • Current Mode Control.
  • Fixed Frequency Operation : 340kHz/800kHz.
  • Output Adjustable from 0.8V to 12V.
  • Up to 95% Efficiency.
  • Internal Compensation.
  • Stable with Low ESR Ceramic Output Capacitors.
  • Cycle-by-Cycle Over Current Protection.
  • Input Under Voltage Lockout.
  • Output Under Voltage Protection.
  • Output Over Voltage Protection.
  • Power Good Indicator.
  • The.

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Datasheet Details

Part number RT7251A
Manufacturer Richtek
File Size 240.11 KB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT7251A Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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® RT7251A/B 1.5A, 17V, 340/800kHz Synchronous Step-Down Converter General Description The RT7251A/B is a high efficiency, monolithic synchronous step-down DC-DC converter that can operate at 340kHz/800kHz, while delivering up to 1.5A output current from a 4V to 17V input supply. The RT7251A/B's current mode architecture allows the transient response to be optimized. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during start-up. Fault conditions also include output under voltage protection, output over voltage protection and thermal shutdown. The low current (<5μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems.