LP5520 - RGB 背光 LED 驱动器

LP5520是TI德州仪器公司的一款指示灯/RGBW产品，LP5520是RGB 背光 LED 驱动器，本站介绍了LP5520的封装应用图解、特点和优点、功能等，并给出了与LP5520相关的TI元器件型号供参考。

LP5520 - RGB 背光 LED 驱动器 - 指示灯/RGBW - LED驱动器 - 德州仪器

产品描述

The LP5520 is an RGB backlight LED driver for small format color LCDs. RGB backlight enables better colors on the display and power savings compared with white LED backlight. LP5520 offers small and simple driver solution without need for optical feedback. Calibration in display module production can be done in one temperature. LP5520 produces true white light over 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 up to 20V LED supply voltage from the battery voltage. The output can be set at 1V step from 5V to 20V. 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 e.g. for ambient light measurement.

LP5520 is available in a 25-pin DSBGA package.

产品特性

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 R, G and B LED
0.2% Typical LED Output Current Matching
PWM Control Inputs for Each Color
SPI and I2C Compatible Interface
Stand-Alone Mode with 1 Wire Control
Sequential Mode for One Color at a Time
Magnetic High Efficiency Boost Converter
Programmable Output Voltage from 5V to 20V
Adaptive Output Voltage Control Option
< 2 µA Typical Shutdown Current
DSBGA-25 Package, 2.77 × 2.59 × 0.6mm

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