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LM3433SQ
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LM3433SQ

  • Category:Operational amplifiers
  • Product Name:The common anode enables high-brightness LED drivers and high-frequency PowerWise ® series dimming
  • Manufacturers:NSC
  • Production Batch Number:10+11+
  • Encapsulation:LIP-24
  • Stock Status:There is stock
  • Stock Quantity:15800
  • Minimum order quantity: 1
  • Details:Klicken Sie hier, um PDF-Informationen zum LM3433SQ zu finden
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  • Product introduction

peculiarity

The operating input voltage range is -9V to 14V relative to the anode of the LED
Control the anode of the input reference LED
The output current is greater than 6A
Capability for PWM frequencies greater than 30kHz
Negative output voltage capability enables the anode of the LED to connect directly to the chassis for maximum heatsink efficiency
No output capacitor is required
Up to 1MHz switching frequency
Low IQ, 1 mA typical
Soft start
Adaptive programmable on-time allows constant ripple current
LLP-24 package

 

illustrate

Der LM3433 ist ein adaptiver DC/DC-Abwärtswandler (Abwärtswandler) mit konstanter Zeit (eine echte Stromquelle). Der LM3433 bietet einen Hochleistungs-LED-Konstantstrom für die Beleuchtung. Die Ausgangskonfiguration ermöglicht es, mehrere LED-Anoden direkt an die Masse anzuschließen, um die maximale Strahlereffizienz des Gehäuses zu referenzieren. Die Hochfrequenzarchitektur bei gleichzeitig niedrigem LED-Welligkeitsstrom ermöglicht die Verwendung kleiner externer passiver Komponenten und keine Ausgangskapazität. Über zwei Steuereingänge wird die Helligkeit der LED eingestellt. Es steht ein analoger Stromsteuereingang zur Verfügung, mit dem der LM3433 angepasst werden kann, um Schwankungen bei der LED-Herstellung und/oder der Farbtemperaturkorrektur auszugleichen. Der andere Eingang ist eine PWM mit Logikpegel, die den LED-Strom steuert. Kurzschlüsse ermöglichen hohe PWM-Dimmfrequenzen bei paralleler Schaltung der PWM-Funktion der LED. PWM-Dimmung bei hohen Frequenzen mit digitaler Farbtemperaturregelung, Interferenzausblendung, Feldfolgebeleuchtung und Helligkeitsregelung. Zu den weiteren Funktionen gehören eine thermische Abschaltung, eine Unterspannungsabschaltung für VCC und ein Abschaltmodus auf Logikebene. Der LM3433 ist ein flaches LLP-24-Gehäuse.


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LCD backlight
Projection system
Solid-state lighting
Automotive lighting

andLM3433SQRelated ICs are:


Model Manufacturers lot number encapsulation illustrate
LM3433SQX NSC 10+ LLP-24 The common anode enables high brightness LED drivers
LM3433SQ NSC 10+11+ LIP-24 The common anode enables high-brightness LED drivers and high-frequency PowerWise ® series dimming

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