Datasheet Texas Instruments LP8550TLE/NOPB — 数据表

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SNVS657E – SEPTEMBER 2010 – REVISED SEPTEMBER 2014 LP8550 High-Efficiency LED Backlight Driver for Notebooks
1 Features 3 Description The LP8550 is a white-LED driver with integrated
boost converter. It has six adjustable current sinks
which can be controlled by PWM input or with I2Ccompatible serial interface. The boost converter has
adaptive output voltage control based on the LED
driver voltages. This feature minimizes the power
consumption by adjusting the voltage to lowest
sufficient level in all conditions. High-Voltage DC/DC Boost Converter with
Integrated FET with Four Switching Frequency
Options: 156/312/625/1250 kHz
2.7-V to 22-V Input Voltage Range to Support 1x
to 5x Cell Li-Ion Batteries
Programmable PWM Resolution
– 8 to 13 True Bits (Steady State)
– Additional 1 to 3 Bits Using Dithering During
Brightness Changes
2 …