LM3631
- 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.
技术文档
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)。
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 (...)
LM3532SW-LINUX — 用于 LM3532 的 Linux 驱动程序
Linux Mainline Status
Available in Linux Main line: No
Available through git.ti.com: (...)
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封装 | 引脚 | 下载 |
---|---|---|
DSBGA (YFF) | 24 | 查看选项 |
订购和质量
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- MTBF/时基故障估算
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