High-Efficiency, 28V, 2A, 430kHz, Synchronous Step-Down DC-DC in SOT583

The MP2328 from Monolithic Power Systems is a fully-integrated high-frequency, step-down dc-dc converter with internal power MOSFETs and synchronous rectification. It offers a very compact solution to achieve a 2A continuous output current over a wide input range, with excellent load and line regulation. The MP2328 has synchronous-mode operation for high efficiency over wide output current-load range.

Constant On-Time control operation provides very fast transient response and easy loop design as well as very tight output regulation. Full protection features include SCP, OCP, UVP and thermal shutdown.

The MP2328 requires a minimal number of readily-available, standard, external components and is available in a space-saving SOT583 package.

Summary of Features and Benefits

• Wide 4.5V-to-28V Operating Input Range
• 115mΩ/55mΩ Low-RDS(ON) Internal Power MOSFETs
• 160µA Quiescent Current
• >92% Efficiency for 24V to 5V/2A Condition
• Power Save Mode at Light Load
• Fast Load Transient Response
• 430kHz Switching Frequency
• Ton Extension for Improving Dropout
• Programmable Soft-Start Time
• Power Good Indication
• Hiccup Mode OCP/OVP Protection
• Thermal Shutdown Protection
• Available in SOT583 Package
• The MPL-AL Inductor Series Matches Best Performance

On The Web: Monolithic Power Systems Inc.

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