MP9472

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0.45A, 18V, Non-Synchronous, Rectified, Step-Down Converter



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Product Description

The MP9472 is a monolithic, non-synchronous, buck regulator that integrates a 175mΩ high-side MOSFET to achieve 0.45A of continuous load current over a wide 4.75V to 18V input voltage range. Current mode control provides fast transient response and cycle-by-cycle current limit.

An adjustable soft-start prevents inrush current at start-up. The supply current drops to 1µA in shutdown mode.

The MP9472 requires minimal external components and is available in an 8-pin TSOT23-8 package.

Programmable

Product Features

  • 0.45A Output Current
  • Wide 4.75V to 18V Operating Input Range
  • Integrated High-Side Power MOSFET
  • Output Adjustable from 0.923V to 15V
  • Programmable Soft Start
  • Stable with Low ESR Ceramic Output Capacitors
  • Fixed 340kHz Frequency
  • Cycle-by-Cycle Over-Current Protection (OCP)
  • Input Under-Voltage Lockout (UVLO)
  • 8-Pin TSOT23-8 Package

Parametrics

  • fsw (max) (kHz)340
  • Vin (min) (V)4.75
  • Vin (max) (V)18
  • Iout (max) (A)0.45
  • Isw Limit (typ) (A)1
  • Max Duty Cycle (%)0.9
  • Vfb (typ) (V)0.923
  • Iq (typ) (mA)1.3
  • Regulated Outputs1
  • Vout (max) (V)15
  • Vout (min) (V)0.923
  • GradeCatalog
  • 封装TSOT23-8
  • Control ModeCurrent Mode
  • Common FeaturesExternal Soft Start