LP5520 - National Semiconductor

LP5520 RGB Backlight LED Driver

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 lig.

Features

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■ 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 MicroSMD-25 .