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LP8550TLE/NOPB 数据表(PDF) 10 Page - Texas Instruments

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部件名 LP8550TLE/NOPB
功能描述  LP8550 High-Efficiency LED Backlight Driver for Notebooks
PDF  49 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

LP8550TLE/NOPB 数据表(HTML) 10 Page - Texas Instruments

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background image
0 10 20 30 40 50 60 70 80 90 100
0
100
200
300
400
500
PWM INPUT (%)
PWM
PWM AND CURR 25% MODE
PWM AND CURR 50% MODE
0
10 20 30 40 50 60 70 80 90 100
-5
0
5
10
15
20
25
30
35
PWM INPUT (%)
25% MODE
50% MODE
0 10 20 30 40 50 60 70 80 90 100
60
70
80
90
100
110
120
130
140
PWM INPUT (%)
15 inch panel, 23 mA current
PWM AND CURR 25% MODE
PWM AND CURR 50% MODE
PWM
0
100
200
300
400
500
0
1
2
3
4
5
6
LUMINANCE (Nits)
PWM
PWM AND CURRENT 25% MODE
PWM AND CURRENT 50% MODE
15 inch panel, 23 mA current
0
10 20 30 40 50 60 70 80 90 100
0
10
20
30
40
50
RISET (k
)
CURRENT[7:0] = FFh
CURRENT[7:0] = 7Fh
LP8550
SNVS657E – SEPTEMBER 2010 – REVISED SEPTEMBER 2014
www.ti.com
Typical Characteristics (continued)
Unless otherwise specified: VBATT = 12 V, CVLDO = 1 μF, L1 = 33 μH, CIN = 10 μF, COUT = 10 μF
Figure 6. ILED vs. RISET
Figure 7. Boost Line Transient Response
Figure 8. Optical Efficiency With 15-inch Panel
Figure 9. Input Power vs. Luminance
Figure 10. Luminance vs. PWM Input
Figure 11. Power Saved with PWM & Current Mode
Compared to PWM Mode
10
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Copyright © 2010–2014, Texas Instruments Incorporated
Product Folder Links: LP8550



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