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LP5520 Datenblatt(PDF) 31 Page - Texas Instruments

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Teilenummer LP5520
Bauteilbeschribung  RGB Backlight LED Driver
PDF  46 Pages
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Hersteller  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP5520 Datenblatt(HTML) 31 Page - Texas Instruments

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31
LP5520
www.ti.com
SNVS440B – MAY 2007 – REVISED MARCH 2016
Product Folder Links: LP5520
Submit Documentation Feedback
Copyright © 2007–2016, Texas Instruments Incorporated
control (06H) – Control Register
7
6
5
4
3
2
1
0
adc_ch
comp_sel
en_autoload
vout_auto
en_boost
nstby
r-0
r-0
rw-0
rw-0
rw-0
rw-1
rw-0
rw-0
adc_ch
Bit 5
0 – compensation depends from the external LM20 temperature sensor
1 – compensation depends from forward voltage of the red LED as temperature sensor
comp_sel
Bit 4
0 – compensation based on S1_IN input
1 – compensation based on S2_IN input
en_autoload
Bit 3
0 – internal boost converter loader off
1 – internal boost converter loader off
vout_auto
Bit 2
0 – manual boost output adjustment with boost_output register
1 – automatic adaptive boost output adjustment
en_boost
Bit 1
0 – boost converter disabled
1 – boost converter enabled
nstby
Bit 0
0 – LP5520 standby mode
1 – LP5520 active mode
ADC_hi_byte (08H) – Analog Digital Converter Output, bits 8-11
7
6
5
4
3
2
1
0
adc[11]
adc[10]
adc[9]
adc[8]
r-0
r-0
r-0
r-0
r-0
r-0
r-0
r-0
ADC_low_byte (09H) – Analog Digital Converter Output, bits 0-7
7
6
5
4
3
2
1
0
adc[7]
adc[6]
adc[5]
adc[4]
adc[3]
adc[2]
adc[1]
adc[0]
r-0
r-0
r-0
r-0
r-0
r-0
r-0
r-0
r_correction (0AH) – Additional Brightness Correction Value Register for Red LED
7
6
5
4
3
2
1
0
corr_r[7]
corr_r[6]
corr_r[5]
corr_r[4]
corr_r[3]
corr_r[2]
corr_r[1]
corr_r[0]
rw-1
rw-0
rw-0
rw-0
rw-0
rw-0
rw-0
rw-0
corr_r[7:0]
Bits 7-0
Correction
corr_r[7:0]
Multiplier
0000 0000
0
0000 0001
0.0078
0000 0010
0.0156
...
...
1000 0000
1.000
...
...
1111 1101
1.991
1111 1110
1.999
1111 1111
2.000



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