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LP8556 Datasheet(PDF) 11 Page - Texas Instruments

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Part # LP8556
Description  High-Efficiency LED Backlight Driver for Tablets
PDF  52 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LP8556 Datasheet(HTML) 11 Page - Texas Instruments

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BRIGHTNESS [%]
PWM Dimming
Adaptive Dimming
VIN = 3.6V
10" Panel
6x7 LED Array
ILEDMAX = 23 mA/CH
L = 4.7 PH
1.5 mm Max Height
fSW = 1.25 MHz
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BRIGHTNESS [%]
PWM Dimming
Adaptive Dimming
VIN = 3.6V
10" Panel
6x7 LED Array
ILEDMAX = 23 mA/CH
L = 4.7 PH
1.5 mm Max Height
fSW = 1.25 MHz
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BRIGHTNESS [%]
LED Efficiency
Boost Efficiency
VIN = 8.6V
6x7 LED Array
ILEDMAX = 20 mA/CH
L = 10 PH
1.5 mm Max Height
fSW = 625 kHz
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BRIGHTNESS [%]
LED Efficiency
Boost Efficiency
VIN = 12.9V
6x7 LED Array
ILEDMAX = 20 mA/CH
L = 10 PH
1.5 mm Max Height
fSW = 625 kHz
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BRIGHTNESS [%]
LED Efficiency
Boost Efficiency
VIN = 3.8V
6x7 LED Array
ILEDMAX = 20 mA/CH
L = 10 PH
1.5 mm Max Height
fSW = 625 kHz
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BRIGHTNESS [%]
LED Efficiency
Boost Efficiency
VIN = 6.3V
6x7 LED Array
ILEDMAX = 20 mA/CH
L = 10 PH
1.5 mm Max Height
fSW = 625 kHz
LP8556
www.ti.com
SNVS871B – JULY 2012 – REVISED SEPTEMBER 2012
Typical Performance Characteristics
Unless otherwise specified: VIN = 3.8V, CVLDO = 10 μF, L1 = 4.7 μH, CIN = 2.2 μF, COUT = 4.7 μF, fSW = 1.25 MHz
Boost and LED Drive Efficiency, VIN = 3.8V
Boost and LED Drive Efficiency, VIN = 6.3V
Figure 6.
Figure 7.
Boost and LED Drive Efficiency, VIN = 8.6V
Boost and LED Drive Efficiency, VIN = 12.9V
Figure 8.
Figure 9.
Optical Efficiency with 10" Panel
Luminance as a Function of Brightness
Figure 10.
Figure 11.
Copyright © 2012, Texas Instruments Incorporated
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Product Folder Links: LP8556



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