LP5520
- Temperature Compensated LED Intensity and Color
- Individual Calibration Coefficients for Each Color
- Color Accuracy ΔX and ΔY ≤ 0.003
- 12-Bit ADC for Measurement of 2 Sensors
- Adjustable Current Outputs for Red, Green, and Blue (RGB) LED
- 0.2% Typical LED Output Current Matching
- PWM Control Inputs for Each Color
- SPI and I2C-Compatible Interface
- Stand-Alone Mode With One-Wire Control
- Sequential Mode for One Color at a Time
- Magnetic High Efficiency Boost Converter
- Programmable Output Voltage from 5 V to 20 V
- Adaptive Output Voltage Control Option
- < 2-µA Typical Shutdown Current
The LP5520 is an RGB backlight LED driver for small format color LCDs. RGB backlights enable better colors on the display and power savings compared with white LED backlights. The device offers a small and simple driver solution without need for optical feedback. Calibration in display module production can be done in one temperature. The LP5520 produces true white light over a wide temperature range. Three independent LED drivers have accurate programmable current sinks and PWM modulation control. Using internal calibration memory and external temperature sensor, the RGB LED currents are adjusted for perfect white balance independent of the brightness setting or temperature. The user programmable calibration memory has intensity vs temperature data for each color. This white balance calibration data can be programmed to the memory on the production line of a backlight module.
The device has a magnetic boost converter that creates a supply voltage of up to 20 V LED from the battery voltage. The output can be set at 1-V steps from 5 V to 20 V. In adaptive mode the circuit automatically adjusts the output voltage to minimum sufficient level for lowest power consumption. Temperature is measured using an external temperature sensor placed close to the LEDs. The second ADC input can be used, for example, for ambient light measurement.
For all available packages, see the orderable addendum at the end of the data sheet.技术文档
| 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 | LP5520 RGB Backlight LED Driver 数据表 (Rev. B) | PDF | HTML | 2016-3-17 | ||
| 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 | |||
| 应用手册 | How to Select a RGB LED Driver | 2019-8-8 | ||||
| 应用手册 | 具备颜色管理功能的发光二极管驱动器：前景一片璀璨 | 英语版 | 2007-6-20 |
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）。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| DSBGA (YZR) | 25 | Ultra Librarian |
订购和质量
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