6V, 1A Dual Channel, 1MHz, Low Iq, PWM Sync Buck with High Efficiency and TSOT23-8 package

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Product Description

The MP2149 is an internally-compensated, 1MHz fixed-frequency, dual PWM, synchronous, step-down regulator. The MP2149 operates from a 2.7V-to-6V input, generates an output voltage as low as 0.608V, and has a 45µA quiescent current that makes it ideal for powering portable equipment that runs on a single cell lithium-ion (Li+) battery. The MP2149 integrates dual 100mΩ high-side switches and 40mΩ synchronous rectifiers for high efficiency without an external Schottky diode. Peak-current mode control and internal compensation limits the minimum number of readily-available external components. Fault-condition protections include cycle-by-cycle current limiting and thermal shutdown. The MP2149 is available in an 8-pin TSOT23-8 package.


Product Features

  • Dual 1A-Output Current
  • >93% Peak Efficiency
  • >80% Light-Load Efficiency
  • Wide 2.7V-to-6V Operating Input Range
  • 100mΩ and 40mΩ Internal Power MOSFET
  • 1MHz Fixed Switching Frequency
  • Adjustable Output from 0.608V to VIN
  • 180° Phase-Shifted Operation
  • 100% Duty-Cycle Operation
  • 45µA Quiescent Current
  • Cycle-by-Cycle Over-Current Protection
  • Short-Circuit Protection with Hiccup Mode
  • Thermal Shutdown
  • Available in an 8-pin TSOT23-8 Package


  • fsw (max) (kHz)1000
  • Vin (min) (V)2.7
  • Vin (max) (V)6
  • Iout (max) (A)1
  • Isw Limit (typ) (A)2.5
  • Max Duty Cycle (%)1
  • Vfb (V)0.608
  • Iq (typ) (mA)0.045
  • Regulated Outputs2
  • Vout (max) (V)5.5
  • Vout (min) (V)0.608
  • GradeCatalog
  • PackageTSOT23-8
  • Control ModeCurrent Mode
  • Common FeaturesLight-Load Efficiency, Synchronous Rectification
  • Special Features100% Duty Cycle

6V, Dual 1A Low Quiescent Current SYNC Buck Regulator

The EV2149-J-00A is used for demonstrating the performance of MPS’s MP2149, an internally compensated 1MHz fixed-frequency dual PWM synchronous step-down regulator.

MP2149 is ideal for powering portable equipment that runs from a single cell Lithium-Ion (Li+)Batterydue to 45µA low quiescent current. The output voltage can be regulated as low as 0.608V.

With peak current mode control and internal compensation, the MP2149 requires a minimum number of readily available standard external components and is available in an 8-pin TSOT23 package.

$25.00 + tax

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.