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What is it?

A buck converter (step-down converter) is a DC-to-DC power converter which steps down voltage from its input (supply) to its output (load) .




What problem does it solve?

The wide VIN buck regulator of the RAA212421 integrates both high-side and low-side nMOSFETs and can use internal or external compensation.

It is integrated with a 500mA LDO as well.

All this integration minimizes the required external components, reduces BOM count and complexity of design.


What are the features and benefits?
  • Wide input voltage range of 3V to 40V
  • Synchronous operation for high efficiency
  • Integrated high-side and low-side NMOS devices
  • Internal fixed frequency (500kHz) or adjustable switching frequency (300kHz to 2MHz)
  • Continuous output current up to 1.1A