MP1479

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18V, 1A, 800kHz, High-Efficiency, Synchronous, Step-Down Converter in SOT563 Package



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Product Description

The MP1479 is a fully integrated, high-frequency, synchronous, rectified, step-down, switch-mode converter with internal power MOSFETs. The MP1479 offers a very compact solution that achieves 1A of continuous output current with excellent load and line regulation over a wide input range. The MP1479 uses synchronous mode operation for higher efficiency over the output current load range.

Constant-on-time (COT) control operation provides very fast transient response, easy loop design, and very tight output regulation.

Full protection features include short-circuit protection (SCP), over-current protection (OCP), under-voltage protection (UVP), and thermal shutdown.

The MP1479 requires a minimal number of readily available, standard, external components and is available in a space-saving SOT563 package.

Product Features

  • Wide 4.2V to 18V Operating Input Range
  • 140mΩ/60mΩ Low RDS(ON) Internal Power MOSFETs
  • 190μA Low IQ
  • Highly Efficient Synchronous Mode Operation
  • Power-Save Mode at Light Load
  • Fast Load Transient Response
  • 800kHz Switching Frequency
  • Internal Soft Start (SS)
  • Over-Current Protection (OCP) and Hiccup
  • Thermal Shutdown
  • Output Adjustable from 0.8V
  • Available in a SOT563 Package

Parametrics

  • fsw (max) (kHz)800
  • Vin (min) (V)4.2
  • Vin (max) (V)18
  • Iout (max) (A)1
  • Isw Limit (typ) (A)1.8
  • Vfb (V)0.805
  • Iq (typ) (mA)0.19
  • Regulated Outputs1
  • Vout (max) (V)10
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageSOT563
  • Control ModeCOT
  • Common FeaturesLight-Load Efficiency, Synchronous Rectification

High-Efficiency, 800kHz,1A, 18V. Step-Down ConverterEvaluation Board

The EV1479-TF-00A Evaluation Board is designed to demonstrate the capabilities of MPS’ MP1479, a fully-integrated high-frequency, synchronous rectified, step-down, switch-mode converter with internal power MOSFETs. It offers a very compact solution to achieve a 1A continuous output current over a wide input range, with excellent load and line regulation. The MP1479 has synchronous-mode operation for higher efficiency over the output current-load range.

Constant On-Time control operation provides very fast transient response and easy loop design as well as very tight output regulation.

Full protection features include SCP, OCP, UVP and thermal shutdown.

The MP1479 requires a minimal number of readily-available, standard, external components and is available in a space-saving SOT563 package.

$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.