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LM3444

ACTIVO

Controlador LED de CA-CC fuera de línea

Detalles del producto

Input voltage type AC/DC Topology Buck, Flyback Vin (min) (V) 8 Vin (max) (V) 13 Vout (max) (V) 60 Vout (min) (V) 9 Iout (max) (A) 2 Iq (typ) (mA) 1.58 Features Adjustable Switch Frequency, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog Number of channels 1 Rating Catalog
Input voltage type AC/DC Topology Buck, Flyback Vin (min) (V) 8 Vin (max) (V) 13 Vout (max) (V) 60 Vout (min) (V) 9 Iout (max) (A) 2 Iq (typ) (mA) 1.58 Features Adjustable Switch Frequency, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog Number of channels 1 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGS) 10 14.7 mm² 3 x 4.9
  • Application Voltage Range: 80 VAC to 277 VAC
  • Capable of Controlling LED Currents
    Greater than 1 A
  • Adjustable Switching Frequency
  • Low Quiescent Current
  • Adaptive Programmable Off-Time Allows for
    Constant Ripple Current
  • Thermal Shutdown
  • No Flicker at 120 Hz
  • Low-Profile 10-Pin VSSOP Package
    or 8-Lead SOIC Package
  • Patented Drive Architecture
  • Application Voltage Range: 80 VAC to 277 VAC
  • Capable of Controlling LED Currents
    Greater than 1 A
  • Adjustable Switching Frequency
  • Low Quiescent Current
  • Adaptive Programmable Off-Time Allows for
    Constant Ripple Current
  • Thermal Shutdown
  • No Flicker at 120 Hz
  • Low-Profile 10-Pin VSSOP Package
    or 8-Lead SOIC Package
  • Patented Drive Architecture

The LM3444 is an adaptive constant off-time AC/DC buck (step-down) constant current controller that provides a constant current for illuminating high power LEDs. The high-frequency capable architecture allows the use of small external passive components. A passive PFC circuit ensures good power factor by drawing current directly from the line for most of the cycle, and provides a constant positive voltage to the buck regulator. Additional features include thermal shutdown, current limit and VCC undervoltage lockout. The LM3444 is available in a low profile 10-pin VSSOP package or an 8-lead SOIC package.

The LM3444 is an adaptive constant off-time AC/DC buck (step-down) constant current controller that provides a constant current for illuminating high power LEDs. The high-frequency capable architecture allows the use of small external passive components. A passive PFC circuit ensures good power factor by drawing current directly from the line for most of the cycle, and provides a constant positive voltage to the buck regulator. Additional features include thermal shutdown, current limit and VCC undervoltage lockout. The LM3444 is available in a low profile 10-pin VSSOP package or an 8-lead SOIC package.

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Documentación técnica

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Tipo Título Fecha
* Data sheet LM3444 AC-DC Offline LED Driver datasheet (Rev. D) PDF | HTML 31 dic 2015
White paper Common LED Functions and LED Driver Design Considerations 21 sep 2020
Selection guide Power Management Guide 2018 (Rev. R) 25 jun 2018
Application note AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 03 may 2013
Application note AN-2082 LM3444 -120VAC, 8W Isolated Flyback LED Driver (Rev. E) 01 may 2013
User guide AN-2083 LM3444 A19 Edison Retrofit Evaluation Board (Rev. C) 01 may 2013
Application note AN-2097 LM3444 - 230VAC, 8W Isolated Flyback LED Driver (Rev. F) 01 may 2013
Application note An Improved Line Regulation Solution Used in LM3444/5 Non-Isolated LED Lighting 25 oct 2012
User guide LM3444 MR16 Buck-Boost Reference Design (Rev. A) 17 feb 2012
User guide LM3444 MR16 Boost Reference Design User Guide (Rev. A) 13 feb 2012

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Símbolo CAD/CAE

LM3444 MR16 Boost Reference Design CAD File

SNVC027.ZIP (332 KB)
Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOIC (D) 8 Ultra Librarian
VSSOP (DGS) 10 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

Soporte y capacitación

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