MP1593

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3A, 28V, 385KHz Step-Down Converter


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Product Description

The MP1593 is a step-down regulator with an internal Power MOSFET. It achieves 3A of 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 cycle?y?ycle current limiting and thermal shutdown. An adjustable soft-start reduces the stress on the input source at startup. In shutdown mode the regulator draws 20? of supply current. The MP1593 requires a minimum number of readily available external components, providing a compact solution.

Product Features

  • 3A Output Current
  • Programmable Soft-Start
  • 100mΩ Internal Power MOSFET Switch
  • Stable with Low ESR Output Ceramic Capacitors
  • Up to 95% Efficiency
  • 20μA Shutdown Mode
  • Fixed 385kHz Frequency
  • Thermal Shutdown
  • Cycle-by-Cycle Over Current Protection
  • Wide 4.75V to 28V Operating Input Range
  • Output Adjustable from 1.22V
  • Under Voltage Lockout
  • Available in 8-Pin SOIC Package

Parametrics

  • fsw (max) (kHz)385
  • Vin (min) (V)4.75
  • Vin (max) (V)28
  • Iout (max) (A)3
  • Isw Limit (typ) (A)6.2
  • Max Duty Cycle (%)0.9
  • Vfb (typ) (V)1.222
  • Iq (typ) (mA)1
  • Regulated Outputs1
  • Vout (min) (V)1.22
  • GradeCatalog
  • PackageSOIC-8E
  • Common FeaturesExternal Soft Start