60V low IQ synchronous step-down controller operates at up to 2.25MHz

Linear Technology LTC7800 synchronous step-down dc-dc controller operates at up to 2.25MHz for reduced circuit size and increased power density. Device’s low 45ns minimum on-time enables 24VIN to 3.3VOUT conversions while switching at a fixed 2MHz, avoiding critical noise-sensitive frequency bands including AM radio. Synchronous rectification delivers up to 95% efficiency while Burst Mode operation keeps quiescent current under 50A in no-load standby conditions, ideal for always-on systems. http://www.analogdevices.com