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LP8557

Part Number	LP8557
Manufacturer	Texas Instruments
Description	High-Efficiency LED Backlight Driver
Published	Apr 14, 2020
Detailed Description	Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LP8557, LP85571 SNVSA15B – DEC...
Datasheet	LP8557 PDF File

Overview

Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LP8557, LP85571 SNVSA15B – DECEMBER 2013 – REVISED DECEMBER 2015 LP8557 High-Efficiency LED Backlight Driver For Tablets 1 Features •1 High-Efficiency DC-DC Boost Converter With 28-V Integrated Power MOSFET • 2.
7-V to 5.
5-V VDD Range for Supporting SingleCell Li-Ion Battery Applications • Six 25-mA High-Precision LED Current Sinks • Adaptive Boost Voltage and LED Current Sink Headroom Controls for Maximum System Efficiency • LED String Count Auto-Detect for Maximum Design Flexibility • Smart Phase Shift PWM Mode for Reduced Audible Noise • PWM Input Duty Cycle Brightness Control, PWM Output Frequency Selectable Independent of Input Frequency • Hybrid PWM Plus Current Dimming for Higher LED Drive Optical Efficiency • Switching Frequency, PWM Output Frequency, and LED Current can be set Through Resistors or I2C Interface • Programmable Boost SW Slew Rate Control and Spread Spectrum Scheme for Reduc...

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