- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄385493 > LP3933SLX (NATIONAL SEMICONDUCTOR CORP) Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs PDF資料下載
參數(shù)資料
| 型號(hào)： | LP3933SLX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 顯示驅(qū)動(dòng)器 |
| 英文描述： | Lighting Management System for Six White LEDs and Two RGB or FLASH LEDs |
| 中文描述： | LED DISPLAY DRIVER, QCC32 |
| 封裝： | 4.50 X 5.50 MM, 0.80 MM HEIGHT, 0.50 MM PITCH, CSP-32 |
| 文件頁(yè)數(shù)： | 12/18頁(yè) |
| 文件大?。?/td> | 406K |
| 代理商： | LP3933SLX |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)當(dāng)前第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)
Dual RGB LED Driver
The RGB driver has six outputs that can independently drive
2 separate RGB LEDs or six LEDs of any kind. User has
control over the following parameters separately for each
LED:
ON and OFF
(start and stop time in blinking cycle)
DUTY
(PWM brightness control)
SLOPE
(turn-on and turn-off slope)
ENABLE
(output enable control)
The main blinking cycle is controlled with 2-bit CYCLE con-
trol (0.25 / 0.5 / 1.0 / 2.0s).
20080501
RGB PWM Operating Principle
RGB_START is the master enable control for the whole RGB
function. The internal PWM and blinking control can be
disabled by setting the RGB_PWM control LOW. In this case
the individual enable controls can be used to switch outputs
on and off. PWM_LED input can be used for external hard-
ware PWM control.
In the normal PWM mode the R, G and B switches are
controlled in 3 phases (one phase per driver). During each
phase the peak current set by external resistor is driven
through the LED for the time defined by DUTY setting
(0 μs–50 μs). As a time averaged current this means
0%–33% of the peak current. The PWM period is 150 μs and
the pulse frequency is 6.7 kHz in normal mode.
20080506
Normal Mode PWM Waveforms at Different Duty
Settings
In the FLASH mode all the outputs are controlled in one
phase and the PWM period is 50 μs. The time averaged
FLASH mode current is three times the normal mode current
at the same DUTY value.
Blinking can be controlled separately for each output. On
and OFF times determine, when a LED turns on and off
within the blinking cycle. When both ON and OFF are 0, the
LED is on and doesn’t blink. If ON equals OFF but is not 0,
the LED is permanently off.
20080502
Example Blinking Waveforms
L
www.national.com
12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP3936 | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| LP3936SL | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| LP3936SLX | Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| LP3939 | Power Amplifier Driver For Dual Band CDMA Handsets |
| LP3939ILQ | Power Amplifier Driver For Dual Band CDMA Handsets |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3936 | 制造商:NSC 制造商全稱(chēng):National Semiconductor 功能描述:Lighting Management System for Six White LEDs and One RGB or FLASH LED |
| LP3936SL | 功能描述:LED照明驅(qū)動(dòng)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 |
| LP3936SL/NOPB | 功能描述:LED照明驅(qū)動(dòng)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 |
| LP3936SLX | 功能描述:LED照明驅(qū)動(dòng)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 |
| LP3936SLX/NOPB | 功能描述:LED照明驅(qū)動(dòng)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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。