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LP85571 数据表(PDF) 10 Page - Texas Instruments

部件名 LP85571
功能描述  LP8557 High-Efficiency LED Backlight Driver For Tablets
PDF  49 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  TI2 [Texas Instruments]
网页  https://www.ti.com
标志 TI2 - Texas Instruments

LP85571 数据表(HTML) 10 Page - Texas Instruments

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background image
0
0.1
0.2
0.3
0.4
0.5
0
20
40
60
80
100
Brightness [%]
2.7V
3.8V
5.5V
C001
1
2
3
4
5
6
0
20
40
60
80
100
Brightness [%]
2.7V
3.8V
5.5V
C001
0
2
4
6
8
10
0
20
40
60
80
100
Brightness [%]
2.7V
3.8V
5.5V
C001
0
1
2
3
4
5
0
20
40
60
80
100
Brightness [%]
2.7V
3.8V
5.5V
C001
80
82
84
86
88
90
0
20
40
60
80
100
Brightness [%]
2.7V
3.8V
5.5V
C001
82
84
86
88
90
92
0
20
40
60
80
100
Brightness [%]
2.7V
3.8V
5.5V
C001
LP8557, LP85571
SNVSA15B – DECEMBER 2013 – REVISED DECEMBER 2015
www.ti.com
Typical Characteristics (continued)
Unless otherwise specified: VIN = VDD = 3.8 V, L = 10 µH Cyntec PIME051E, D = Diodes PD3S130L-7, COUT = 2 × 4.7 µF,
LED Vƒ = 2.85 V (typical), ILED_MAX = 25 mA per string.
6p6s Load
6p6s Load
Figure 14. LED Efficiency as a Function of VIN/VDD
Figure 15. Boost Efficiency as a Function of VIN/VDD
Figure 16. LED Current Accuracy as a Function of VDD
Figure 17. LED Current Channel-Channel Matching as a
Function of VDD
Figure 18. Device Operating Current as a
Figure 19. Current Sink Headroom Voltage as a
Function of VDD
Function of VDD
10
Submit Documentation Feedback
Copyright © 2013–2015, Texas Instruments Incorporated
Product Folder Links: LP8557 LP85571



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