The LTC3601 uses internal switches with RDS(ON) of only 100mOhms and 130mOhms to deliver efficiencies as high as 96%. Its unique control architecture enables it to achieve duty cycles as low as 5% while maintaining switching frequencies as high as 2.25MHz making it ideal for high step down ratio applications, such as 12VIN to 1.2VOUT conversions. Burst Mode® operation is used to maximize light load efficiency requiring only 300uA at no load, making it well suited for applications demanding maximum battery run time. For applications that require the lowest possible noise, the LTC3601 can be configured to run in forced continuous mode, reducing noise and potential RF interference. Additional features include a Power Good voltage monitor, external synchronization capability and thermal protection.
The LTC3601EUD is available in a 3mm x 3mm QFN-16, and the LTC3601MSE is offered in a 16-lead, thermally enhanced MSOP package.