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

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Product 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.

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 QFN20 (3mm×4mm) Package


  • Vfb (V)0.79
  • Vin (min) (V)2.7
  • Vin (max) (V)7
  • Vs (max) (V)30
  • Vbus (max) (V)6
  • Iout (max) (A)5
  • Irelease (A)5
  • Icharge (A)0.5
  • Iq (typ) (mA)2
  • Regulated Outputs2
  • Step-Down DC/DC Controller0
  • Step-Down DC/DC Converter1
  • Step-Up DC/DC Controller0
  • Step-Up DC/DC Converter1
  • Internal LDO0
  • GradeCatalog
  • PackageQFN-20 (3x4)
  • Step-Up Converter Current (A)up to 0.5
  • Step-Down Converter Current (A)5.0
  • Special FeaturesInput Current Limit, Power-On Reset, Reverse-Current Protection
  • SSExternal
  • PGYes
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.