主页 电源管理 LED 驱动器 背光 LED 驱动器
主页
电源管理
LED 驱动器
背光 LED 驱动器

LM3532

正在供货

具有可编程环境光感应功能和 I2C 兼容接口的高效白光 LED 驱动器

立即订购
数据表

LM3532

正在供货
数据表 立即订购

产品详情

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 (— mm × — mm)
  • 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.
filter 查找其他 背光 LED 驱动器
下载 观看带字幕的视频 视频

技术文档

未找到结果。请清除搜索并重试。
查看全部 5
顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 LM3532 High-Efficiency White LED Driver With Programmable Ambient Light Sensing Capability and I2C-Compatible Interface 数据表 (Rev. E) PDF | HTML 2015-8-28
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020-9-21
选择指南 电源管理指南 2018 2018-7-31
应用手册 Analog PWM Dimming in White-LED Drivers 2016-12-21
应用手册 Inductor Selection in Boost Converters for LCD Backlight Applications 2016-10-24

设计与开发

如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。

评估板

LM3532EVM — LM3532 评估模块

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 (...)
用户指南: PDF
支持的产品和硬件
有库存
限制：
??asset.out-of-stock-ti_zh_CN??
无货
驱动程序或库

LM3532SW-LINUX — 用于 LM3532 的 Linux 驱动程序

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: (...)

支持的产品和硬件
评估模块 (EVM) 用 GUI

SNVC050 — LM3532 Graphical User Interface

支持的产品和硬件
封装 引脚 CAD 符号、封装和 3D 模型
DSBGA (YFQ) 16 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

订购和质量

推荐产品可能包含与 TI 此产品相关的参数、评估模块或参考设计。

支持和培训

可获得 TI 工程师技术支持的 TI E2E™ 论坛

查看全部论坛主题 查看英文版全部论坛主题

所有内容均由 TI 和社区贡献者按“原样”提供，并不构成 TI 规范。请参阅使用条款。

如果您对质量、包装或订购 TI 产品有疑问，请参阅 TI 支持。​​​​​​​​​​​​​​

视频