Industrial Grade, 3A, 5.5V, 1.2MHz, 40μA IQ, COTSynchronous Step-Down Switcher AEC-Q100 Qualified

Talk to an Engineer or get a Quote

Product Description

The MPQ2143 is a monolithic, step-down, switch-mode converter with internal power MOSFETs. It can achieve up to 3A continuous output current from a 2.5V–to-5.5V input voltage with excellent load and line regulation. The output voltage can be regulated as low as 0.6V.
Constant-on-time control provides fast transient response and eases loop stabilization. Fault-condition protections include cycle-by-cycle current limiting and thermal shutdown. 
The MPQ2143 is available in small TSOT23-8 package and requires only a minimal number of readily-available standard external components.
The MPQ2143 is ideal for a wide range of applications including high-performance DSPs, FPGAs, smartphones, portable instruments, and DVD drivers.


Product Features

  • Guaranteed Industrial/Automotive Temp
  • Wide 2.5V-to-5.5V Operating Input Range
  • Output Voltage as Low as 0.6V
  • 100% Duty Cycle in Dropout
  • Up to 3A Output Current
  • Low IQ: 40µA
  • 80mΩ and 40mΩ Internal Power MOSFET Switches
  • Default 1.2MHz Switching Frequency
  • EN and Power-Good for Power Sequencing
  • Cycle-by-Cycle Over-Current Protection
  • Auto Discharge at Power Off
  • Short-Circuit Protect with Hiccup Mode
  • Stable with Low-ESR Output Ceramic Capacitors
  • Available in a TSOT23-8 Package
  • Available in AEC-Q100 Grade 1


  • fsw (max) (kHz)1200
  • Vin (min) (V)2.5
  • Vin (max) (V)5.5
  • Iout (max) (A)3
  • Vfb (V)0.6
  • Iq (typ) (mA)0.04
  • GradeIndustrial
  • PackageTSOT23-8
  • Control ModeCOT
  • Common FeaturesLight-Load Efficiency, Power Good, Synchronous Rectification
  • Special Features100% Duty Cycle, Output Discharge/Soft Stop
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.