The MP28258 is a 3-A, 20-V integrated synchronous, switch-mode, step-down converter in a 2 x 3-mm QFN package. It suits converting power from a 4.25 to 20-V input range to a 0.815 to 13V output range with load current of up to 3 A. It targets PoL designs for a wide range of space-constraint applications in consumer, storage, and networking.
The buck converter features adaptive constant on-time (COT) control method, integrated power FETs with low on-resistance Rds(on), and a power-good indicator. The adaptive COT control eliminates complicated loop compensation to simplify design and increase flexibility with output capacitor selection. The combined Rds(on) and proprietary switching loss reduction technique achieves up to 95% peak efficiency at 12V input and 5V output. ($1.49 ea/1,000 available now.)
By Paul O’Shea
Monolithic Power Systems , San Jose , CA
Information 408-826-0600
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