12V, 3A, 1.5MHz Synchronous Step-Down Converter with Programmable Input Current Limit

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Product Description

The MP2110 is a monolithic step-down switch mode converter with integrated input current limit switch. The step-down converter integrates a main switch and a synchronous rectifier for high efficiency without an external Schottky diode. The input average current limit can be externally programmed. It is ideal for powering portable equipment that is powered by an USB port. The MP2110 can supply 3A of load current from a 3.3V to 5.4V continuous input voltage with excellent load and line regulation. The MP2110 input can support up to 12V transient and clamp the current limit switch output at 5.65V (Typical). The Constant-On-time (COT) control scheme provides fast transient response high light-load efficiency and easy loop stabilization. Fault condition protection includes cycle-by-cycle current limit and thermal shutdown. The MP2110 is available in a space saving 14 pin 3mmx3mm QFN package.


Product Features

  • High Efficiency: Up to 95%
  • High Current Step-Down Converter
  • 1.5MHz Switching Frequency
  • 70mΩ/50mΩ Internal Power MOSFET
  • 3A Available Load Current
  • 100% Low Dropout Operation
  • Output Voltage as Low as 0.6V
  • Input Current Limit Switch
  • Programmable Current Limit: 0.3-3A
  • +/- 10% Current Limit Accuracy when Current Limit > 1A
  • Wide Input Voltage Range: 3.3V to 5.4V
  • 12V Input Transient Tolerance
  • 70mΩ Internal MOSFET
  • OVP Clamp Protection
  • Independent Enable Pins
  • External Temperature Sense & Protection
  • Internal Thermal Fault Protection
  • Space Saving 3mm x 3mm QFN14 Package


  • fsw (max) (kHz)1500
  • Vin (min) (V)3.3
  • Vin (max) (V)5.4
  • Iout (max) (A)3
  • Isw Limit (typ) (A)5
  • Vfb (V)0.6
  • Iq (typ) (mA)0.19
  • Regulated Outputs1
  • Vout (max) (V)5
  • Vout (min) (V)0.6
  • GradeCatalog
  • PackageQFN-14 (3x3)
  • Control ModeCOT
  • Common FeaturesLight-Load Efficiency, Synchronous Rectification
  • Special Features100% Duty Cycle
Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.