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reference designMP24971

Monolithic Power Systems MP24971

1.5A, 50V, 100kHz, 5V Fixed Output Step-Down Converter with Programmable Current Limit and Output Line-Drop Compensation

Overview

TopologyBuck Converter
Input voltage8-50 V
Switching frequency70-140 kHz
Output 15 V / 1.5 A
IC revision1.01

Description

The MP24971 is a monolithic, step-down, switch-mode converter with a programmable output-current limit. It has a fixed 5V/1.5A continuous output over a wide input supply range, and has excellent load and lineregulation. It has an internal 2ms-to-4ms softstart that prevents inrush current at start-up, and compensates for output line drop.

MP24971 achieves a low EMI signature with well-controlled switching edges.

It has fault-condition protections including hiccup-mode current limit protection, shortcircuit protection, output over-voltage protection, and thermal shutdown.

The MP24971 requires a minimal number of readily-available standard external components, and is available in SOIC8 and SOIC8E packages.

Features

  • Wide 8V-to-50V Operating Input Range
  • Output Over-Voltage Protection
  • 5V Fixed Output
  • 0.4Ω Internal Power MOSFET
  • Internal 4ms Soft-Start
  • Stable with Low-ESR Ceramic Output Capacitors
  • Fixed 100kHz Frequency
  • Low EMI Signature
  • Thermal Shutdown
  • Output Line-Drop Compensation
  • Hiccup Circuit Limit and Short Circuit Protection
  • Available in SOIC8 and SOIC8E Package

Typical applications

  • Power Supplies for Linear Chargers
  • USB Power Supplies
  • Automotive Power Adapters

More information

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L(µH)
IRP,40K(A)
RDC max.(mΩ)
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7447709330
SPECWE-PD SMT Power Inductor, 33 µH, 5.5 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-PD SMT Power Inductor
Inductance33 µH
Performance Rated Current5.5 A
DC Resistance45 mΩ
Self Resonant Frequency8.5 MHz
Size1210 
VersionStandard 
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