LP8551_14 Datasheet, PDF (30/47 Pages) Texas Instruments – LP8551 High-Efficiency LED Backlight Driver for Notebooks

LP8551
SNVS673E – APRIL 2010 – REVISED SEPTEMBER 2014
8.6.2.3 EEPROM Address 1
Address A1h
EEPROM ADDRESS 1 U
7
6
BOOST_FREQ[1:0]
Name
Bit
BOOST_FREQ
7:6
5
EN_LED_FAULT
Access
R/W
EN_LED_FAULT
5
R/W
TEMP_LIM
4:3
R/W
SLOPE
2:0
R/W
4
3
TEMP_LIM[1:0]
2
1
SLOPE[2:0]
Description
Boost Converter Switch Frequency
00 = 156 kHz
01 = 312 kHz
10 = 625 kHz
11 = 1250 kHz
Enable LED fault detection
0 = LED fault detection disabled
1 = LED fault detection enabled
Thermal deration function temperature threshold
00 = thermal deration function disabled
01 = 110°C
10 = 120°C
11 = 130°C
Slope time for brightness change
000 = Slope function disabled, immediate brightness change
001 = 50 ms
010 = 75 ms
011 = 100 ms
100 = 150 ms
101 = 200 ms
110 = 300 ms
111 = 500 ms
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