2.7-6V Input, 2.5A, 1.2MHz Synchronous Step-Down Converter

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Product Description

The MP9115 is a fully integrated, internally compensated 1.2MHz fixed frequency PWM step-down converter. It is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+) Battery, with an input range from 2.7V to 6V. The MP9115 can provide up to 2.5A of load current with output voltage as low as 0.8V. It can also operate at 100% duty cycle for low dropout applications. With peak current mode control and internal compensation, the MP9115 is stable with ceramic capacitors and small inductors. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. MP9115 is available in the small 10-pin 3mmx3mm TQFN package.


Product Features

  • Output Adjustable from 0.8V to VIN
  • Up to 95% Efficiency
  • 100% Duty Cycle for Low Dropout Applications
  • 1μA Shutdown Current
  • 1.2MHz Fixed Switching Frequency
  • 2.7V-6V Input Operation Range
  • Stable with Low ESR Output Ceramic Capacitors
  • Thermal Shutdown
  • Cycle-by-Cycle Over Current Protection
  • Short Circuit Protection
  • No reverse current of LS Mos for Pre-Bias Start Up
  • Available in a 10-pin 3x3mm TQFN


  • fsw (max) (kHz)1200
  • Vin (min) (V)2.7
  • Vin (max) (V)6
  • Iout (max) (A)2.5
  • Isw Limit (typ) (A)4.5
  • Max Duty Cycle (%)1
  • Vfb (V)0.8
  • Iq (typ) (mA)0.6
  • Regulated Outputs1
  • Vout (max) (V)6
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageTQFN-10 (3x3)
  • Common FeaturesSynchronous Rectification
  • Special Features100% Duty Cycle

Reference Materials

Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.