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

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Product Description

The MP5505E 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.

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


  • Vfb (V)0.801/0.795
  • Vin (min) (V)2.7
  • Vin (max) (V)7
  • Vs (max) (V)30
  • Vbus (max) (V)6
  • Iout (max) (A)6
  • Irelease (A)6
  • Icharge (A)0.54
  • Iq (typ) (mA)2
  • Regulated Outputs2
  • fsw (max) (kHz)500
  • Step-Down DC/DC Converter1
  • Step-Up DC/DC Converter1
  • Internal LDO0
  • GradeCatalog
  • PackageQFN-20 (3x4)
  • Step-Up Converter Current (A)0.54
  • Step-Down Converter Current (A)6.0
  • Special FeaturesInput Current Limit, Power-On Reset, Reverse-Current Protection
  • SSExternal
  • PGYes