MP2181

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1A, Synchronous, Step-Down Converter with SS & PG



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Product Description

The MP2181 is a monolithic, step-down, switch-mode converter with built-in internal power MOSFETs. It achieves 1A continuous output current from a 2.5V to 5.5V input voltage with excellent load and line regulation. The output voltage can be regulated to as low as 0.6V.

The constant-on-time (COT) control scheme provides fast transient response and eases loop stabilization. Fault protections include cycle-by-cycle current limiting and thermal shutdown.

The MP2181 is available in an ultra-small SOT583 package, and requires a minimal number of readily available, standard external components.

The MP2181 is ideal for a wide range of applications including high-performance DSPs, wireless power, portable and mobile devices, and other low-power systems.

Product Features

  • Low IQ: 21μA
  • 1.2MHz Switching Frequency
  • EN forPowerSequencing
  • 1% FB Accuracy
  • Wide 2.5V to 5.5V Operating Input Range
  • Output Adjustable from 0.6V
  • Up to 1A Output Current
  • 90mΩ and 50mΩ Internal Power MOSFET Switches
  • 100% Duty On
  • Output Discharge
  • VO OVP
  • External Soft-Start Control
  • Short-Circuit Protection with Hiccup Mode
  • Power Good
  • Available in a SOT583 Package

Parametrics

  • fsw (max) (kHz)1200
  • Vin (min) (V)2.5
  • Vin (max) (V)5.5
  • Iout (max) (A)1
  • Vfb (V)0.6
  • Iq (typ) (mA)21
  • GradeCatalog
  • PackageSOT583
  • Control ModeCOT
  • Common FeaturesExternal Soft Start, Light-Load Efficiency, Power Good, Synchronous Rectification
  • Special FeaturesOutput Discharge

1A Synchronous Step-down Converter Evaluation Board

The MP2181 is a monolithic, step-down, switch-mode converter with built-in internal power  MOSFETs. It achieves 1A continuous output current from a 2.5V-to-5.5V input voltage with excellent load and line regulation. The output voltage can be regulated to as low as 0.6V.

The Constant-On-Time control scheme provides fast transient response and eases loop stabilization. Fault protections include cycle-bycycle current limiting and thermal shutdown.

The MP2181 is available in an ultra-small SOT583 package and requires a minimal number of readily available standard external components.

The MP2181 is ideal for a wide range of applications including high performance DSPs, wireless power, portable and mobile devices, and other low-power systems.

$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.