7V, 4A, High-Efficiency, Energy Storage and Management Unit

The MP5505E from Monolithic Power Systems (MPS) is a lossless energy storage and management unit targeted toward solid-state and hard-disk drive applications. The highly integrated input current limit and energy storage-and-release management make the system solution very compact.

The internal input current limit block with dV/dt control prevents inrush current during system start-up. The bus voltage start-up slew rate is programmable, and a power-on reset function is included for hot-swapping.

MPS’s patented energy storage-and-release management control circuit minimizes the storage capacitor requirement. It pumps the input voltage to a higher storage voltage and releases the energy over a hold-up time to the system in the case of an input outage. The storage voltage and the release voltage are both programmable for different system applications.

The MP5505E requires a minimal number of readily available, standard, external components and is available in a QFN-20 (3mmx4mm) package.

Summary of product features:

• Wide 2.7V to 7V Operating Input Range
• Input Current Limiter with Integrated 60mΩ MOSFET
• Up to 4.5A Input Current Limit
• Reverse-Current Protection
• 6V Bus Clamping Voltage
• Power-On Reset
• Adjustable dV/dt Slew Rate for Bus Voltage Start-Up
• Internal 30mΩ Disconnect Switch
• Internal 70mΩ and 60mΩ Power Switches for Energy Storage and Release Management Circuits
• Thermal Protection
• EN and Power Good Indicators
• Available in a QFN-20 (3mmx4mm) Package