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參數(shù)資料
| 型號： | LP3958TL |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | Lighting Management Unit with High Voltage Boost Converter |
| 中文描述： | LED DISPLAY DRIVER, PBGA25 |
| 封裝： | 2.54 X 2.54 MM, 0.60 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, MICRO SMD PACKAGE-25 |
| 文件頁數(shù)： | 16/28頁 |
| 文件大?。?/td> | 1091K |
| 代理商： | LP3958TL |
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Backlight Drivers
(Continued)
FADE IN / FADE OUT
LP3958 has an automatic fade in and out for main and sub
backlight. The fade function is enabled with EN_FADE bit.
The slope of the fade curve is set by the SLOPE bit. Fade
control for main and sub display is set by FADE_SEL bit.
Recommended fading sequence:
1.
ASSUMPTION: Current WLED value in register
2.
Set SLOPE
3.
Set FADE_SEL
4.
Set EN_FADE = 1
5.
Set target WLED value
6.
Fading will be done either within 0.65s or 1.3s based on
SLOPE selection
Fading times apply to full scale change i.e. from 0 to 100% or
vice versa. If the current change does not correspond to full
scale change, the time will be respectively shorter. See
WLED Dimming diagrams for typical fade times.
WLED CONTROL REGISTER (03H)
Bit
SLOPE
5
FADE execution time:
0 = 1.3s (full scale)
1 = 0.65s (full scale)
FADE_SEL
4
FADE selection:
0 = FADE controls MAIN
1 = FADE controls SUB
EN_FADE
3
FADE enable
0 = FADE disabled
1 = FADE enabled
DISPL
2
Display mode:
0 = MAIN and SUB individual control
1 = MAIN and SUB controlled with
MAIN DAC
EN_MAIN
1
MAIN enable:
0 = disable
1 = enable
EN_SUB
0
SUB enable:
0 = disable
1 = enable
Note:
if DISPL=1 and FADE_SEL=0 then FADE effects MAIN and SUB
Name
Description
Adjustment is made with 04H (main current) and with 05H
(sub current) registers:
MAIN CURRENT [7:0]
SUB CURRENT [7:0]
0000 0000
0000 0001
0000 0010
0000 0011
…
…
1111 1101
1111 1110
1111 1111
Driver current,
mA (typical)
0
0.1
0.2
0.3
…
…
25.3
25.4
25.5
L
www.national.com
16
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3958TL/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP3958TLX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Lighting Management Unit with High Voltage Boost Converter |
| LP3958TLX/NOPB | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| LP395Z | 功能描述:兩極晶體管 - BJT RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產(chǎn)品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
| LP395Z | 制造商:Texas Instruments 功能描述:POWER TRANSISTOR TO-92-3 395 |
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