Analog Devices MAX25231 Mini Buck Converter is small, synchronous, and integrates high-side and low-side switches. The MAX25231 delivers up to 1.2A, with 3.5V to 36V input voltages, while using only 3.5µA quiescent current at no load. The Converter supports an accurate output voltage of ±2% within the normal operation input range of 6V to 18V. With 65ns minimum on-time capability, the Converter is capable of large input-to-output conversion ratios.
The frequency is internally fixed at 2.1MHz, which allows for small external components and reduced output ripple, and guarantees no AM interference. The MAX25231 provides pin-enabled spread-spectrum frequency modulation designed to minimize EMI-radiated emissions due to the modulation frequency.
The Analog Devices MAX25231 Mini Buck Converter can operate in dropout by running at 99% duty cycle, making it ideal for automotive and industrial applications. The MAX25231 is offered in a small (3mm x 3mm) 12-pin TDFN package with an exposed pad and uses very few external components.