MP1583

NRFND
3A, 23V, 385kHz Asynchronous Step-Down Converter

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Product Description

The MP1583 is a step-down regulator with a built in 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 MP1583 requires a minimum number of external components, providing a compact solution.

Product Features

  • 3A Output Current
  • Programmable Soft-Start
  • 100mO Internal Power MOSFET Switch
  • Stable with Low ESR Output Ceramic Capacitors
  • Up to 95% Efficiency
  • 20? Shutdown Mode
  • Fixed 385kHz Frequency
  • Thermal Shutdown
  • Cycle-by-Cycle Over Current Protection
  • Wide 4.75V to 23V Operating Input Range
  • Output Adjustable from 1.22V to 21V
  • Under Voltage Lockout

Parametrics

  • fsw (max) (kHz)385
  • Vin (min) (V)4.75
  • Vin (max) (V)23
  • Iout (max) (A)3
  • Isw Limit (typ) (A)4.9
  • Max Duty Cycle (%)0.9
  • Vfb (typ) (V)1.222
  • Iq (typ) (mA)1
  • Regulated Outputs1
  • Vout (max) (V)21
  • Vout (min) (V)1.22
  • GradeCatalog
  • PackagePDIP8, SOIC-8E
  • Control ModeCurrent Mode
  • Common FeaturesExternal Soft Start

Evaluation Kit

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Kit details

The EV0015 is a 3A Evaluation Board designed to demonstrate the MP1583’s capabilities. The MP1583 is a monolithic step down (buck) converter with a built in internal Power MOSFET.

The MP1583 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 eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. In shutdown mode the regulator draws 20µA of supply current.

$25.00 + tax