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LM3407

ACTIVO

Convertidor de conmutación reductor flotante de salida de corriente constante y constante de 350 mA

Detalles del producto

Input voltage type DC/DC Topology Buck Vin (min) (V) 4.5 Vin (max) (V) 30 Vout (max) (V) 27 Vout (min) (V) 0.45 Iout (max) (A) 0.35 Iq (typ) (mA) 0.78 Features Adjustable Switch Frequency, Enable/Shutdown, Integrated Switch, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method PWM Number of channels 1 Rating Catalog
Input voltage type DC/DC Topology Buck Vin (min) (V) 4.5 Vin (max) (V) 30 Vout (max) (V) 27 Vout (min) (V) 0.45 Iout (max) (A) 0.35 Iq (typ) (mA) 0.78 Features Adjustable Switch Frequency, Enable/Shutdown, Integrated Switch, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method PWM Number of channels 1 Rating Catalog
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9
  • Input Operating Range 4.5 V to 30 V
  • Output Voltage Range: 0.1 VIN to 0.9 VIN
  • Accurate Constant Current Output
  • Independent Device Enable (CMOS Compatible) and PWM Dimming Control
  • Converter Switching Frequency Adjustable From 300 kHz to 1 MHz
  • No External Control Loop Compensation Required
  • Supports Ceramic and Low ESR Output Capacitors
  • Input Undervoltage Lockout (UVLO)
  • Thermal Shutdown Protection
  • MSOP-8 PowerPAD Package
  • Input Operating Range 4.5 V to 30 V
  • Output Voltage Range: 0.1 VIN to 0.9 VIN
  • Accurate Constant Current Output
  • Independent Device Enable (CMOS Compatible) and PWM Dimming Control
  • Converter Switching Frequency Adjustable From 300 kHz to 1 MHz
  • No External Control Loop Compensation Required
  • Supports Ceramic and Low ESR Output Capacitors
  • Input Undervoltage Lockout (UVLO)
  • Thermal Shutdown Protection
  • MSOP-8 PowerPAD Package

The LM3407 device is a constant current output floating buck switching converter designed to provide constant current to high-power LEDs. The device is ideal for automotive, industrial, and general lighting applications. The LM3407 has an integrated power N-channel MOSFET that makes the application solution compact and simple to implement. An external 1% thick-film resistor allows the converter output voltage to adjust as needed to deliver constant current within 10% accuracy to a serially connected LED string of varying number and type. Converter switching frequency is adjustable from 300 kHz to 1 MHz. The LM3407 features a dimming input to enable LED brightness control by Pulse Width Modulation (PWM). Additionally, a separate enable pin allows for low-power shutdown. An exposed pad MSOP-8 package provides excellent heat dissipation and thermal performance. Input UVLO and output open-circuit protection ensure a robust LED driver solution.

The LM3407 device is a constant current output floating buck switching converter designed to provide constant current to high-power LEDs. The device is ideal for automotive, industrial, and general lighting applications. The LM3407 has an integrated power N-channel MOSFET that makes the application solution compact and simple to implement. An external 1% thick-film resistor allows the converter output voltage to adjust as needed to deliver constant current within 10% accuracy to a serially connected LED string of varying number and type. Converter switching frequency is adjustable from 300 kHz to 1 MHz. The LM3407 features a dimming input to enable LED brightness control by Pulse Width Modulation (PWM). Additionally, a separate enable pin allows for low-power shutdown. An exposed pad MSOP-8 package provides excellent heat dissipation and thermal performance. Input UVLO and output open-circuit protection ensure a robust LED driver solution.

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Documentación técnica

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* Data sheet LM3407 350-mA, Constant Current Output Floating Buck Switching Converter for High-Power LEDs datasheet (Rev. C) PDF | HTML 15 nov 2016
White paper Common LED Functions and LED Driver Design Considerations 21 sep 2020
User guide LM3407 Component Calculator (Rev. A) 23 may 2016
Application note AN-1656 Design Challenges of Switching LED Drivers (Rev. A) 03 may 2013
Application note AN-1982 Small, Wide Input Voltage Range LM2842 Keeps LEDs Cool (Rev. A) 23 abr 2013
EVM User's guide AN-1763 LM3407 Evaluation Board Reference Design (Rev. A) 21 ene 2009

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.

Placa de evaluación

LM3407EVAL — Placa de evaluación de regulador de conmutación reductor flotante de salida de corriente constante d

The LM3407 evaluation board contains a Pulse-Width-Modulation (PWM) floating buck converter with an integrated N-Channel power MOSFET and is designed to provide a constant current output for driving high power LEDs, such as the Lumileds Luxeon® power LEDs and OSRAM Golden DRAGON® LED.

Guía del usuario: PDF
Herramienta de cálculo

LM3407DESIGN-CALC — Calculadora de componentes LM3407

Guía del usuario: PDF
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
HVSSOP (DGN) 8 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

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