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RT7299B - Synchronous Step-Down Converter

Description

The RT7299B is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 8A output current from a 4.5V to 18V input supply.

Features

  • Low RDS(ON) Power MOSFET Switches 26mΩ/19mΩ.
  • Input Voltage Range : 4.5V to 18V.
  • Adjustable Switching Frequency : 200kHz to 1.6MHz.
  • Current-Mode Control.
  • Synchronous to External Clock : 200kHz to 1.6MHz.
  • Accurate Voltage Reference 0.6V ± 1%.
  • Monotonic Start-Up into Pre-biased Outputs.
  • Adjustable Soft-Start.
  • Power Good Indicator.
  • Input Under-Voltage Lockout.
  • Selectable Hiccup Mode and Latch-Off Mode Under-Voltage Protection.
  • Over-Tempera.

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Datasheet Details

Part number RT7299B
Manufacturer Richtek
File Size 276.12 KB
Description Synchronous Step-Down Converter
Datasheet download datasheet RT7299B Datasheet

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Full PDF Text Transcription

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Reference Design Sample & Design Tools Buy ® RT7299B 8A, 18V, Synchronous Step-Down Converter General Description The RT7299B is a high efficiency, monolithic synchronous step-down DC/DC converter that can deliver up to 8A output current from a 4.5V to 18V input supply. The RT7299B current-mode architecture with external compensation allows the transient response to be optimized over a wide range of loads and output capacitors. Cycle-by-cycle current limit provides protection against shorted outputs and soft-start eliminates input current surge during startup. Fault condition protections include output under-voltage protection, output over-voltage protection, and overtemperature protection.
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