Monolithic Power Systems MP5505

Description

MP5505 is a lossless energy storage and management unit targeted at the solid-state and hard-disk drive applications. Its highly-integrated input-current limit and energy storage and release management makes 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. It also includes a Power-On-Reset function 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 MP5505 requires a minimal number of readily-available standard external components, and is available in a 20-pin QFN (3mm×4mm) package.

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 QFN20 (3mm×4mm) Package

Typical applications

• Hard-Disk Drives
• Power Back-up/Battery Hold-up Supplies
• Solid-State Drives

More information

• Datasheet
• IC product information