IC-Hersteller Monolithic Power Systems

IC-Hersteller (104)

Monolithic Power Systems MP4459

1.5A, 4MHz, 36V Step-Down Converter

Details

TopologieAbwärtswandler
Eingangsspannung4.5-36 V
Schaltfrequenz1600-4800 kHz
Ausgang 12.5 V
IC-Revision1.03

Beschreibung

The MP4459 is a high frequency step-down switching regulator with an integrated internal high-side high voltage power MOSFET. It provides 1.5A output with current mode control for fast loop response and easy compensation.The wide 4.5V to 36V input range accommodates a variety of step-downapplications, including those in automotive systems. A 100µA operational quiescent current is suitable for use in battery-powered applications.The frequency foldback helps prevent inductor current runaway during startup and thermal shutdown provides reliable, fault tolerant operation.In some applications, such as AM radio and ADSL applications, in which the device is sensitive to frequency band, the MP4459 can avoid the related EMI problem by setting the frequency at 4MHz.The MP4459 is available in thin 10-pin 3x3mm TQFN package.

Eigenschaften

  • 100μA Quiescent Current
  • Wide 4.5V to 36V Operating Input Range
  • 150mΩ Internal Power MOSFET
  • Up to 4MHz Programmable Switching Frequency
  • Ceramic Capacitor Stable
  • Internal Soft-Start
  • Precision Current Limit without a Current Sensing Resistor
  • Up to 95% Efficiency
  • Output Adjustable from 0.8V to 36V
  • Available in 10-Pin 3x3mm TQFN Package

Typische Anwendungen

  • Automotive Systems
  • High Voltage Power Conversion
  • Industrial Power Systems
  • Battery Powered Systems
  • Distributed Power Systems

Weiterführende Informationen

Artikeldaten

Jetzt einloggen, um Verfügbarkeiten zu sehen und Verfügbarkeitsprognosen anzufragen. LOGIN
Artikel Nr.
Daten­blatt
Simu­lation
Downloads
Status
Produktserie
L(µH)
IRP,40K(A)
RDC max.(mΩ)
fres(MHz)
Bauform
Version
MusterVerfügbarkeit & Muster
Jetzt einloggen, um Verfügbarkeiten zu sehen und Verfügbarkeitsprognosen anzufragen. LOGIN
SPECWE-PD SMT-Speicherdrossel, 4.7 µH, 4.2 A
Simu­lation
Verfügbarkeit
Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre.
Induktivität4.7 µH
Performance Nennstrom4.2 A
Gleichstromwiderstand35 mΩ
Eigenresonanzfrequenz45 MHz
Bauform7332 
VersionRobust 
Verfügbarkeit prüfen