MP38873

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15A, 16V, High Frequency Step-Down Converter with Synchronous Gate Driver



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Product Description

The MP38873 is a monolithic step-down switch mode converter with a built in internal power MOSFET. It achieves 15A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle­by­cycle current limiting and thermal shutdown. The MP38873 requires a minimum number of readily available standard external components and is available in a 20-pin 3mm x 4mm QFN package. The MP38873 is ideal for a wide range of applications including distributed power systems, pre-regulator for linear regulators, compact DC-DC regulators for PCB space limited platforms.

Programmable

Product Features

  • Wide 4.5V to 16V Operating Input Range
  • 15A Output Current
  • 25mΩ Internal Power MOSFET Switch
  • Synchronous Gate Driver
  • Synch Output to Drive Another Regulator in Phase-Shift Operation
  • Startup Tracking

Parametrics

  • fsw (max) (kHz)400
  • Vin (min) (V)4.5
  • Vin (max) (V)16
  • Iout (max) (A)15
  • Isw Limit (typ) (A)21
  • Max Duty Cycle (%)0.9
  • Vfb (typ) (V)0.81
  • Iq (typ) (mA)1
  • Regulated Outputs1
  • Vout (max) (V)12
  • Vout (min) (V)0.8
  • GradeCatalog
  • PackageQFN-20 (3x4)
  • Common FeaturesExternal Soft Start, Power Good, Synchronous Rectification
  • Special FeaturesExternal Frequency Sync