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Step-up/down DC-DC converter features seamless transition switching

Sunnyvale, Calif.—Maxim Integrated Products has introduced the MAX8625A, a single-inductor, H-bridge, step-up/down DC-DC converter with seamless transition switching.

Maxim's patented, seamless transition H-bridge topology uses three operating phases during each switching cycle to achieve glitch-free buck-boost transitions, ensuring highly efficient switching. The MAX8625A minimizes output-ripple variation in transitions, and provides up to 92% efficiency over a wide, 2.5V to 5.5V input-voltage range. Consequently, this device eliminates the need for a two-chip, boost-then-buck design, thus saving board space and cost. Applications include PDAs, smartphones, MP3 players, and other one-cell Li+ systems that require a 3.3V or adjustable output.

Additional features include an ultra-low, 37microamp quiescent current in skip mode, a fixed (3.3V) or adjustable (1.25V to 4V) output voltage, internal compensation, soft-start, and TrueShutdown circuitry, which disconnects the output from the input when the IC is disabled. The MAX8625A is available in a tiny, 3mm x 3mm, 14-pin TDFN package and requires only a single inductor. It is fully specified over the -40°C to +85°C extended temperature range.

Pricing: Starts at $2.45 (1000-up, FOB USA). An evaluation kit is available to speed designs and time to market.
Availability: Now.
Datasheet: Click here.

Maxim Integrated Products, www.maxim-ic.com

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