- 制造厂商:TI
- 产品类别:电源管理
- 技术类目:LED 驱动器 - RGB LED 驱动器
- 功能描述:RGB 背光 LED 驱动器
- 点击这里打开及下载LP5520的技术文档资料
- TI代理渠道,提供当日发货、严格的质量标准,满足您的目标价格
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.- 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
- Number of channels (#)
- 3
- LED current per channel (mA)
- 60
- LED configuration
- Parallel, Series
- Program memory
- No
- Programmable ramp control
- No
- Vin (Min) (V)
- 2.9
- Vin (Max) (V)
- 5.5
- Iout (Max) (A)
- 0.18
- Features
- Analog/PWM mixed dimming, Constant current, Current control, I2C control
- Iq (Typ) (mA)
- 0.9
- Shutdown current (Typ) (uA)
- 1
- Operating temperature range (C)
- -30 to 85
- Rating
- Catalog
LP5520的完整型号有:LP5520TL/NOPB、LP5520TLX/NOPB,以下是这些产品的关键参数及官网采购报价:
LP5520TL/NOPB,工作温度:-30 to 85,封装:DSBGA (YZR)-25,包装数量MPQ:250个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNAGCU,TI官网LP5520TL/NOPB的批量USD价格:1.916(1000+)
LP5520TLX/NOPB,工作温度:-30 to 85,封装:DSBGA (YZR)-25,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNAGCU,TI官网LP5520TLX/NOPB的批量USD价格:1.597(1000+)
PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice
PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用,包括业内超大的模型库之一,涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。借助?PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。
在?PSpice for TI 设计和仿真工具中,您可以搜索 TI (...)