APEK8509GLP-01-MH
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APEK8509GLP-01-MH

  • Category:Driver chip
  • Product Name:Wide input voltage range, high efficiency 4-channel fault-tolerant LED driver
  • Manufacturers:Allegro
  • Production Batch Number:15+
  • Encapsulation:DEMO BOARD
  • Stock Status:There is stock
  • Stock Quantity:9030
  • Minimum order quantity: 1
  • Details:Haga clic aquí para encontrar información en pdf sobre APEK8509GLP-01-MH
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  • Product introduction

A8509is a multi-output white LED for backlit LCD panelsdrive。 Integra un controlador de impulso de modo de corriente y cuatro sumideros de corriente separados.

Esta arquitectura de controlador boost amplía enormemente boost para optimizar la solución para el número requerido de LED por cadena. El pin FSET/SYNC establece la frecuencia de conmutación de refuerzo deseada o sincroniza el valor de 300 a 800 kHz.

El valor del disipador LED se puede ajustar a través de una resistencia ISET externa (consulte la figura 1). Los cuatro sumideros LED también se pueden combinar para lograr corrientes más altas para cada cadena de LED.

El A8509 proporciona protección contra cortocircuitos y sobretensiones de salida, protección contra cortocircuitos o cortocircuitos de pines LED y protección contra sobretemperatura. El límite de corriente pulso por pulso de dos etapas proporciona arranque suave y protección contra una alta sobrecarga de corriente en los interruptores de corriente externos. Como opción, el A8509 se puede conducir con FAULT P-FETs pinned to disconnect input power from the system in the event of a short to ground in the boost converter.

Las opciones de paquetes están disponibles en paquetes TSSOP (sufijo LP) y SOICW (LB) de 24 pines. El TSSOP está equipado con un disipador de calor expuesto, mientras que el SOICW tiene cuatro pines con fusibles internos para una mejor disipación del calor. Ambos paquetes no contienen plomo (Pb) y cuentan con un revestimiento de marco de plomo de estaño 100% mate.

  • Cuatro sumideros integrados de alta corriente para cadenas LED; Se pueden unir entre sí para corrientes más altas
  • Fixed frequency current mode control with gate driver/boost controller; Powerful gate drivers that drive external N-channel MOSFETs greatly expand the number of LEDs per string
  • Se puede operar en paralelo con un controlador de refuerzo maestro y hasta tres controladores esclavos adicionales; Se pueden operar hasta 16 cadenas LED mientras solo se carga un regulador de refuerzo principal
  • Autonomous current sharing between LED strings enables 0.7% accuracy and 0.8% matching
  • Wide input voltage range: 9 to 40 V
  • Provides an internal bias supply (typically V) for single-supply operationIN = 12 or 24 V)
  • Los pines Enable y PWM separados sirven como interfaces para la atenuación Enable y PWM
  • Fset/Sync function that can be set at the boost converter switching frequency or synchronized at 800 kHz
  • Protection features
    • Open or shorted LED pin protection
    • Open circuit Schottky protection
    • Pulse-by-pulse current limit
    • Over-Temperature Protection (OTP)

 

andAPEK8509GLP-01-MHRelated ICs are:


Model Manufacturers lot number encapsulation illustrate
APEK8509GLP-01-T Allegro 15+ DEMO BOARD Wide input voltage range, high efficiency 4-channel fault-tolerant LED driver
APEK8509GLP-01-MH Allegro 15+ DEMO BOARD Wide input voltage range, high efficiency 4-channel fault-tolerant LED driver
A8509GLPTR-T Allegro 15+ 24-lead SOIC Wide input voltage range, high efficiency 4-channel fault-tolerant LED driver

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