MP5455

Active
4.5A, 7V, Power Back-Up Management

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Product Description

The MP5455 is designed to provide back-up power in the event of a power failure. 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. MPS? patented power back-up control circuit minimizes the storage capacitor requirement. This control circuit 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 requirements. The MP5455 requires a minimal number of readily available, standard, external components and is available in a QFN-20 (3mmx4mm) package.

Product Features

  • Power Back-Up Management Circuit
  • Input Current Limiter with Integrated 60m? MOSFET
  • Wide 2.7V to 7V Operating Input Range
  • Up to 4.5A Input Current Limit
  • Reverse-Current Protection
  • Adjustable dV/dt Slew Rate for Bus Voltage Start-Up
  • Over-Temperature Protection (OTP)
  • Available in a QFN-20 (3mmx4mm) Package

Parametrics

  • Vfb (V)0.79
  • Vin (min) (V)2.7
  • Vin (max) (V)7
  • Vs (max) (V)30
  • Vbus (max) (V)6
  • Irelease (A)5
  • Icharge (A)0.5
  • Iq (typ) (mA)2
  • Regulated Outputs1
  • Mps StatusActive
  • mps_Status2
  • GradeCatalog
  • PackageQFN-20 (3x4)
  • Step-Down Converter Current (A)4.5
  • Special FeaturesInput Current Limit, Reverse-Current Protection
  • SSExternal
  • PGNo

Evaluation Kit

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Kit details

EV5455-L-00A Evaluation Board is designed to demonstrate the capabilities of MP5455. The MP5455 is front end power and data backup power management Unit IC for SSD application. It supports input hot swap, input startup inrush current control, input current limit, power on reset and backup power management for SSD data backup in case of input power failure. MP5455’s built-in boost mode converter charges energy storage bulk capacitor to a programmed voltage level (up to 30V) when system is powered up and keeps refreshing the charge during normal operation. In case of input power failure, MP5455 flags the input power failure, disconnects input power and transfers the energy from energy storage bulk capacitor to SSD system’s DCDC switches via built-in buck mode converter to keep SSD system powered for data backup.

The MP5455 requires a minimum number of readily available standard external components and is available in a space QFN20 (3mmX4mm) package.

$25.00 + tax