MP38870

NRFND

3A, 14V, 600KHz Step-Down Converter with Synchronizable Gate Driver



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Product Description

The MP38870 is a monolithic step-down switch mode converter with a built in internal high-side power MOSFET. It achieves 3A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and reliable over current protection. Fault condition protection includes cycle­by­cycle current limiting and thermal shutdown. The MP38870 requires a minimum number of readily available standard external components and is available in a space saving 3mm x 4mm 14-pin QFN package.

Programmable

Product Features

  • Wide 4.5V to 14V Operating Input Range
  • 3A Continuous Output Current
  • 80mΩ Internal Power MOSFET Switch
  • Power Good Indicator
  • Synchronous Gate Driver Delivers up to 95% Efficiency
  • Fixed 600kHz Frequency
  • External Synchronous Option: 250kHz-1.5MHz
  • Cycle-by-Cycle Over Current Protection
  • Thermal Shutdown
  • Output Adjustable from 0.8V
  • Stable with Low ESR Output Ceramic Capacitors
  • Available in a 3x4mm 14-Pin QFN Package

Parametrics

  • fsw (max) (kHz)600
  • Vin (min) (V)4.5
  • Vin (max) (V)14
  • Iout (max) (A)3
  • Isw Limit (typ) (A)4
  • Max Duty Cycle (%)0.9
  • Vfb (typ) (V)0.808
  • Iq (typ) (mA)0.9
  • Regulated Outputs1
  • Vout (max) (V)11
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageQFN-14 (3x4)
  • Common FeaturesPower Good, Synchronous Rectification
  • Special FeaturesExternal Frequency Sync