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RT7247B - 1.2MHz Synchronous Step-Down Converter

Description

The RT7247B is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 2A output current from a 4.5V to 18V input supply.

Features

  • ±1.5% High Accuracy Reference Voltage.
  • 4.5V to 18V Input Voltage Range.
  • 2A Output Current.
  • Integrated N-MOSFET Switches.
  • Current Mode Control.
  • Fixed Frequency Operation : 1.2MHz.
  • Output Adjustable from 0.8V to 12V.
  • Stable with Low ESR Ceramic Output Capacitors.
  • Up to 95% Efficiency.
  • Programmable Soft-Start.
  • Cycle-by-Cycle Over Current Limit.
  • Input Under Voltage Lockout.
  • Output Under Voltage Protection.
  • Thermal Shutdown Protec.

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Datasheet preview – RT7247B

Datasheet Details

Part number RT7247B
Manufacturer Richtek
File Size 233.05 KB
Description 1.2MHz Synchronous Step-Down Converter
Datasheet download datasheet RT7247B Datasheet
Additional preview pages of the RT7247B datasheet.

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Full PDF Text Transcription

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Design Sample & Tools Buy ® RT7247B 2A, 18V, 1.2MHz Synchronous Step-Down Converter General Description The RT7247B is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 2A output current from a 4.5V to 18V input supply. The RT7247B's current mode architecture and external compensation allow the transient response to be optimized over a wide input range and loads. Cycle-bycycle current limit provides protection against shorted outputs, and soft-start eliminates input current surge during start-up. The RT7247B also provides under voltage protection and thermal shutdown protection. The low current (<3μA) shutdown mode provides output disconnection, enabling easy power management in battery-powered systems.
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