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Controladores LED
Controladores para LED de retroiluminación

LM3532

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Controlador LED blanco de alta eficiencia con capacidad programable de detección de luz ambiental y

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LM3532

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Detalles del producto

Number of channels 3 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 40 Type Inductive Switching frequency (max) (kHz) 500 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 89 Topology Boost Features OVP Operating temperature range (°C) -40 to 125 Rating Catalog
Number of channels 3 Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0 Vout (max) (V) 40 Type Inductive Switching frequency (max) (kHz) 500 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 89 Topology Boost Features OVP Operating temperature range (°C) -40 to 125 Rating Catalog
DSBGA (YFQ) 16 3.24 mm² 1.8 x 1.8
  • Drives up to 3 Parallel High-Voltage LED Strings
    at 40 V Each With up to 90% Efficiency
  • 0.4% Typical Current Matching Between Strings
  • 256 Level Logarithmic and Linear Brightness
    Control With 14-Bit Equivalent Dimming
  • I2C-Compatible Interface
  • Direct Read Back of Ambient Light Sensor Via
    8-bit ADC
  • Programmable Dual Ambient Light Sensor Inputs
    With Internal Sensor Gain Selection
  • Dual External PWM Inputs for LED Brightness
    Adjustment
  • Independent Current String Brightness Control
  • Programmable LED Current Ramp Rates
  • 40-V Overvoltage Protection
  • 1-A Typical Current Limit
  • Drives up to 3 Parallel High-Voltage LED Strings
    at 40 V Each With up to 90% Efficiency
  • 0.4% Typical Current Matching Between Strings
  • 256 Level Logarithmic and Linear Brightness
    Control With 14-Bit Equivalent Dimming
  • I2C-Compatible Interface
  • Direct Read Back of Ambient Light Sensor Via
    8-bit ADC
  • Programmable Dual Ambient Light Sensor Inputs
    With Internal Sensor Gain Selection
  • Dual External PWM Inputs for LED Brightness
    Adjustment
  • Independent Current String Brightness Control
  • Programmable LED Current Ramp Rates
  • 40-V Overvoltage Protection
  • 1-A Typical Current Limit

The LM3532 is a 500-kHz fixed frequency asynchronous boost converter which provides the power for 3 high-voltage, low-side current sinks. The device is programmable over an I2C-compatible interface and has independent current control for all three channels. The adaptive current regulation method allows for different LED currents in each current sink thus allowing for a wide variety of backlight and keypad applications.

The main features of the LM3532 include dual ambient light sensor inputs each with 32 internal voltage setting resistors, 8-bit logarithmic and linear brightness control, dual external PWM brightness control inputs, and up to 1000:1 dimming ratio with programmable fade in and fade out settings.

The LM3532 is available in a 16-pin, 0.4-mm pitch thin DSBGA package. The device operates over a 2.7-V to 5.5-V input voltage range and the −40°C to +85°C temperature range.

The LM3532 is a 500-kHz fixed frequency asynchronous boost converter which provides the power for 3 high-voltage, low-side current sinks. The device is programmable over an I2C-compatible interface and has independent current control for all three channels. The adaptive current regulation method allows for different LED currents in each current sink thus allowing for a wide variety of backlight and keypad applications.

The main features of the LM3532 include dual ambient light sensor inputs each with 32 internal voltage setting resistors, 8-bit logarithmic and linear brightness control, dual external PWM brightness control inputs, and up to 1000:1 dimming ratio with programmable fade in and fade out settings.

The LM3532 is available in a 16-pin, 0.4-mm pitch thin DSBGA package. The device operates over a 2.7-V to 5.5-V input voltage range and the −40°C to +85°C temperature range.
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Documentación técnica

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* Data sheet LM3532 High-Efficiency White LED Driver With Programmable Ambient Light Sensing Capability and I2C-Compatible Interface datasheet (Rev. E) PDF | HTML 28 ago 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 Analog PWM Dimming in White-LED Drivers 21 dic 2016
Application note Inductor Selection in Boost Converters for LCD Backlight Applications 24 oct 2016
User guide AN-2249 LM3532 Evaluation Kit (Rev. B) 30 abr 2013
User guide AN-2249 LM3532 Evaluation Kit 21 jun 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.

Placa de evaluación

LM3532EVM — Módulo de evaluación LM3532

The LM3532 Evaluation Board is designed to fully evaluate the LM3532 Triple Output, White LED Driver with I2C-Compatible Interface. For a detailed description of the LM3532 refer to the LM3532 datasheet. The board comes equipped with 3 series strings of 10 white LEDs. Additionally there are two (...)
Guía del usuario: PDF
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Controlador o biblioteca

LM3532SW-LINUX — Controlador Linux para LM3532

The Linux driver supports the LMU(Lighting Management Unit) devices for smartphone handsets. The Linux driver supports communication through the I2C bus and interfaces with various sub-systems.

 

Linux Mainline Status

Available in Linux Main line: No
Available through git.ti.com: (...)

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GUI para el módulo de evaluación (EVM)

SNVC050 — LM3532 Graphical User Interface

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Controladores para LED de retroiluminación
LM3532 — Controlador LED blanco de alta eficiencia con capacidad programable de detección de luz ambiental y
Desarrollo de hardware
Placa de evaluación
LM3532EVM — Módulo de evaluación LM3532
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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 (...)
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DSBGA (YFQ) 16 Ultra Librarian
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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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