5.5V, 2A, 2.6MHz, Synchronous, Step-Down Switcher



The MP2172 is a monolithic, step-down, switch-mode converter with integrated, internal, power MOSFETs. The MP2172 can achieve up to 2A of 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 (COT) control provides fast transient response and eases loop stabilization. Full protection features include cycle-by-cycle current limiting and thermal shutdown.

The MP2172 is ideal for a wide range of applications, including automotive infotainment, clusters, telematics, and portable instruments.

The MP2172 requires only a minimal number of readily available, standard, external components and is available in a small TSOT23-8 package.


  • Wide 2.5V to 5.5V Operating Input Range
  • Output Voltage as Low as 0.6V
  • 100% Duty Cycle in Dropout
  • Up to 2A Output Current
  • 80mΩ and 45mΩ Internal Power MOSFET Switches
  • Default 2.6MHz Switching Frequency with 3.3V Input and 1.8V Output
  • EN and Power Good for Power Sequencing
  • Cycle-by-Cycle Over-Current Protection (OCP)
  • Auto Discharge at Power-Off
  • Short-Circuit Protection (SCP) with Hiccup Mode
  • Stable with Low ESR Output Ceramic Capacitors
  • Available in a TSOT23-8 Package


  • fsw (max) (kHz)2600
  • Vin (min) (V)2.5
  • Vin (max) (V)5.5
  • Iout (max) (A)2
  • Vfb (V)0.6
  • Iq (typ) (mA)520
  • GradeCatalog
  • PackageTSOT23-8
  • Control ModeCOT
  • Common FeaturesLight-Load Efficiency, Power Good
  • Special Features100% Duty Cycle

2A, 5.5V, 2.6MHz, Synchronous Step-Down Switcher Evaluation Board

The EV2172-J-00A is used for demonstrating the performance of MPS’s MP/MPQ2172, a low-voltage, high switching frequency, step-down switcher with built-in power MOSFETs. The MP/MPQ2172 provides up to 2A of highly efficient output with constant-on-time control for fast loop response. The MP/MPQ2172 is ideal for powering portable equipment that runs from a single cell Lithium-ion (Li+) battery. The output voltage can be regulated to as low as 0.6V.

High power efficiency over a wide load range is achieved by scaling down the switching frequency at light load to reduce the switching-related loss by constant-on-time control. Short circuit and thermal shutdown provides reliable, fault-tolerant operation. The MP/MPQ2172 is available in a TSOT23-8 package.

¥5,432.50 + tax