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Analog Devices Inc. MAX42402/MAX42403 Synchronous Buck Converters are tiny synchronous buck converters with integrated high-side and low-side switches. The MAX42402/MAX42403 are designed to deliver up to 2.5A/3.5A with a wide, 4.5V to 36V input voltage range. Voltage quality can be monitored by observing the PGOOD signal. The IC can operate in dropout by running at a 99% duty cycle, making it ideal for industrial applications. The MAX42402/MAX42403 offer externally programmable output voltage. Fixed internal frequency options of 1.5MHz/400kHz are available, allowing small external components and reduced output ripple.
When SYNC is low, the MAX42402/MAX42403 automatically enters skip mode at light loads with an ultra-low quiescent current of 27uA at no load. A pin-selectable forced-PWM mode is also available, which helps to improve EMI performance. The devices have a spread-spectrum frequency modulation option designed to minimize EMI-radiated emissions due to the modulation frequency. The Analog Devices Inc. MAX42402/MAX42403 are available in a small, 3mm x 3mm FC2QFN package and use very few external components.
