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LM3631

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适用于 LCD 面板的集成式 WLED 背光驱动器和偏置电源

产品详情

Number of channels 2 Vin (min) (V) 2.7 Vin (max) (V) 5 Vout (min) (V) 0 Vout (max) (V) 30 Type Inductive Switching frequency (max) (kHz) 1100 Duty cycle (max) (%) 94 LED current per channel (mA) 25 Peak efficiency (%) 90 Topology Boost, Current Sink, LDO, Multi-Channel Features Adjustable Switch Frequency, CABC, Enable/Shutdown, I2C control, OVP, PWM control, Power good, Soft Start Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 2 Vin (min) (V) 2.7 Vin (max) (V) 5 Vout (min) (V) 0 Vout (max) (V) 30 Type Inductive Switching frequency (max) (kHz) 1100 Duty cycle (max) (%) 94 LED current per channel (mA) 25 Peak efficiency (%) 90 Topology Boost, Current Sink, LDO, Multi-Channel Features Adjustable Switch Frequency, CABC, Enable/Shutdown, I2C control, OVP, PWM control, Power good, Soft Start Operating temperature range (°C) -40 to 85 Rating Catalog
DSBGA (YFF) 24 4.67999999999999928 mm² 1.8 x 2.5999999999999996
  • Drives up to Two Strings with Maximum of Eight LEDs in Series
    • Integrated Backlight Boost with 29-V Maximum Output Voltage
    • Two Low-Side Constant-Current LED Drivers with 25-mA
      Maximum Output Current
  • Backlight Efficiency Up to 90%
  • 11-Bit Linear or Exponential Dimming with up to 17-Bit Output
    Resolution
  • External PWM Input for CABC Backlight Operation
  • LCD Bias Efficiency > 85%
  • Programmable Positive LCD bias, 4-V to 6-V, 100-mA Maximum
    Output Current
  • Programmable Negative LCD bias, –4-V to –6-V,
    80-mA Maximum Output Current
  • Two Positive Programmable LDO Reference Outputs
    • 4-V to 6-V, 50-mA Maximum Output Current
    • 1.8-V to 3.3-V, 80-mA Maximum Output Current
  • 2.7-V to 5-V Input Voltage Range
  • Drives up to Two Strings with Maximum of Eight LEDs in Series
    • Integrated Backlight Boost with 29-V Maximum Output Voltage
    • Two Low-Side Constant-Current LED Drivers with 25-mA
      Maximum Output Current
  • Backlight Efficiency Up to 90%
  • 11-Bit Linear or Exponential Dimming with up to 17-Bit Output
    Resolution
  • External PWM Input for CABC Backlight Operation
  • LCD Bias Efficiency > 85%
  • Programmable Positive LCD bias, 4-V to 6-V, 100-mA Maximum
    Output Current
  • Programmable Negative LCD bias, –4-V to –6-V,
    80-mA Maximum Output Current
  • Two Positive Programmable LDO Reference Outputs
    • 4-V to 6-V, 50-mA Maximum Output Current
    • 1.8-V to 3.3-V, 80-mA Maximum Output Current
  • 2.7-V to 5-V Input Voltage Range

The LM3631 is a complete LCD backlight and bias power solution for mobile devices. This one-chip solution has an integrated high-efficiency backlight LED driver and positive/negative bias supplies for LCD drivers addressing the power requirements of high-definition LCDs. Integrated solution allows small solution size while still maintaining high performance.

Capable of driving up to 16 LEDs, the LM3631 is ideal for small- to medium-size displays. Two additional programmable LDO regulator outputs can be used to power display controller, LCD gamma reference, or any additional peripherals.

A high level of integration and programmability allows the LM3631 to address a variety of applications without the need for hardware changes. Voltage levels, backlight configuration, and power sequences are all configurable through I2C interface.

The LM3631 is a complete LCD backlight and bias power solution for mobile devices. This one-chip solution has an integrated high-efficiency backlight LED driver and positive/negative bias supplies for LCD drivers addressing the power requirements of high-definition LCDs. Integrated solution allows small solution size while still maintaining high performance.

Capable of driving up to 16 LEDs, the LM3631 is ideal for small- to medium-size displays. Two additional programmable LDO regulator outputs can be used to power display controller, LCD gamma reference, or any additional peripherals.

A high level of integration and programmability allows the LM3631 to address a variety of applications without the need for hardware changes. Voltage levels, backlight configuration, and power sequences are all configurable through I2C interface.

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类型 标题 下载最新的英语版本 日期
* 数据表 LM3631 Complete LCD Backlight and Bias Power 数据表 PDF | HTML 2014年 8月 21日
白皮书 常见 LED 功能和 LED 驱动器设计注意事项 英语版 2020年 9月 21日
应用手册 Analog PWM Dimming in White-LED Drivers 2016年 12月 21日
EVM 用户指南 Using the LM3631EVM Evaluation Module 2014年 8月 21日

设计和开发

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

LM3631EVM — LM3631EVM 完全 LCD 背光和偏置电源评估模块

The Texas Instruments LM3631 Evaluation Module (EVM) helps designers evaluate the operation and performance of the LM3631 Complete LCD Backlight and Bias Power unit. The LM3631EVM uses the LM3631’s three LDO regulators and an inverting charge pump to provide +-5.6V, 5.5V and 3.3V output (...)

用户指南: PDF
TI.com 上无现货
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: (...)

评估模块 (EVM) 用 GUI

SNVC168 LM3631EVM Software

支持的产品和硬件

支持的产品和硬件

产品
背光 LED 驱动器
LM3631 适用于 LCD 面板的集成式 WLED 背光驱动器和偏置电源
硬件开发
评估板
LM3631EVM LM3631EVM 完全 LCD 背光和偏置电源评估模块
模拟工具

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在 PSpice for TI 设计和仿真工具中,您可以搜索 TI (...)
封装 引脚 下载
DSBGA (YFF) 24 查看选项

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

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支持和培训

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