High Efficiency, 2A, 6V, 1.5MHz, 17uA Iq, COT Synchronous Step Down Converter with better Vfb accuracy and better load regulation in QFN package



The MP9162A is a monolithic, step-down, switch-mode converter with built-in, internal power MOSFETs. It can achieve 2A of continuous output current from a 2.5V-to-6V input voltage with excellent load and line regulation. The output voltage can be regulated as low as 0.6V.
The constant-on-time (COT) control scheme provides a fast transient response and eases loop stabilization. Fault condition protections include cycle-by-cycle current limiting and thermal shutdown. 
The MP9162A is available in a small QFN-8 (2.0mmx1.5mm) package and requires only a minimal number of readily available, standard, external components.
The MP9162A is ideal for a wide range of applications, including high-performance DSPs, FPGAs, PDAs, and portable instruments.



  • Very Low IQ: 17μA
  • Default 1.5MHz Switching Frequency
  • 1.5% VFB Accuracy
  • EN and Power Good for Power Sequencing
  • Wide 2.5V to 6V Operating Input Range
  • Output Adjustable from 0.6V
  • Up to 2A of Output Current
  • 100% Duty Cycle in Dropout
  • 110mΩ and 60mΩ Internal Power MOSFET Switches
  • Cycle-by-Cycle Over-Current Protection (OCP)
  • Short-Circuit Protection (SCP) with Hiccup Mode
  • Stable with Low ESR Output Ceramic Capacitors
  • Available in a QFN-8 (1.5mmx2.0mm) Package


  • fsw (max) (kHz)1500
  • Vin (min) (V)2.5
  • Vin (max) (V)6
  • Iout (max) (A)2
  • Isw Limit (typ) (A)3.2
  • Max Duty Cycle (%)1
  • Vfb (V)0.6
  • Iq (typ) (mA)0.017
  • Regulated Outputs1
  • Vout (max) (V)6
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-8 (2.0x1.5)
  • Control ModeCOT
  • Common FeaturesLight-Load Efficiency, Power Good, Synchronous Rectification
  • Special Features100% Duty Cycle