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參數(shù)資料
| 型號： | LP5526TLX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | 4 Mbit Uniform Sector, Serial Flash Memory |
| 中文描述： | LED DISPLAY DRIVER, PBGA25 |
| 封裝： | 2.54 X 2.54 MM, 0.60 MM HEIGHT, 0.50 MM PITCH, BGA-25 |
| 文件頁數(shù)： | 17/33頁 |
| 文件大?。?/td> | 1150K |
| 代理商： | LP5526TLX |
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Functionality of Color LED
Outputs (RLED, GLED, BLED)
(Continued)
When RLED, GLED and BLED are connected together as in
Typical Application 1, flash current can be adjusted with
8.33% step in constant current mode by changing RGB max
current register values as seen on following table. Note that
0% means that appropriate output is turned off by setting
RSW, GSW or BSW bit to 0.
I
R
[%]
I
G
[%]
I
B
[%]
Total
current [%]
8.33
16.67
25.00
33.33
41.67
50.00
58.33
66.67
75.00
83.33
91.67
100
0
0
0
0
0
0
0
0
25
50
75
100
0
0
0
0
25
50
75
100
100
100
100
100
25
50
75
100
100
100
100
100
100
100
100
100
3. Using Flash Mode
In this mode Flash is triggered with external PWM pin and
pre-flash brightness is adjusted by adjusting the RGB max
current values. After flash pulse flash led will be shut down.
Write the pre-flash current values to RGB max current
register
Enable RGB functions and disable PWM mode (EN-
_RGB = 1, RGB_PWM = 0)
Enable flash mode (EN_FLASH = 1), make sure
GPIO[0]/PWM pin is in low state
Enable external PWM pin (EN_PWM_PIN = 1)
Start pre-flash by switching on the LEDs (RSW = 1, GSW
= 1, BSW = 1). Pre-flash brightness can be affected also
by setting on only one or two LEDs
Use EN_EXT_R_PWM, EN_EXT_G_PWM and EN-
_EXT_B_PWM bits to select which LED outputs are used
for flash
Start flash pulse by setting GPIO[0]/PWM pin high and
stop it by setting GPIO[0]/PWM pin low
During the flash pulse the LED outputs with EN_EXT_x-
_PWM bit enabled give out maximum current, regardless
of RGB max current register value or XSW values
Note: EN_FLASH bit must be set low, and then high again
before it is possible to make a new flash pulse.
20179704
Using Flash Mode
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP5526TLX/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 |
| LP5527 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| LP55271 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| LP55271TL | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Tiny LED Driver for Camera Flash and 4 LEDs with I2C Programmability, Connectivity Test and Audio Synchronization |
| LP55271TL/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 |
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