- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358924 > LP3944 (National Semiconductor Corporation) RGB/White/Blue 8-LED Fun Light Driver PDF資料下載
參數(shù)資料
| 型號(hào)： | LP3944 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | RGB/White/Blue 8-LED Fun Light Driver |
| 中文描述： | 的RGB /白/藍(lán)8的LED燈驅(qū)動(dòng)器樂(lè) |
| 文件頁(yè)數(shù)： | 9/12頁(yè) |
| 文件大?。?/td> | 249K |
| 代理商： | LP3944 |
Application Notes
(Continued)
TABLE 1. LP3944 REGISTER TABLE
Address (Hex)
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
Note: Registers 1, 8 and 9 are empty and non-functional registers. Register 1 is read-only, with all bits hard-wired to zero. Registers 8 and 9 can be written and read,
but the content does ot have any effect on the operation of the LP3944.
Register Name
Input 1
Register 1
PSC0
PWM0
PSC1
PWM1
LS0
LS1
Register 8
Register 9
Read/Write
Register Function
Read Only
Read Only
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
LED0–7 Input Register
None
Frequency Prescaler 0
PWM Register 0
Frequency Prescaler 1
PWM Register 1
LED0–3 Selector
LED4–7 Selector
None
None
BINARY FOMAT FOR INPUT REGISTERS (READ ONLY)—ADDRESS 0x00 and 0x01
Address 0x00
Bit #
Default value
7
X
6
X
5
X
4
X
3
X
2
X
1
X
0
X
LED7
LED6
LED5
LED4
LED3
LED2
LED1
LED0
X = don’t care
BINARY FORMAT FOR FREQUENCY PRESCALER AND PWM REGISTERS — ADDRESS 0x02 to 0x05
Address 0x02 (PSC0)
Bit #
Default value
PSC0 register is used to program the period of DIM0.
DIM0 = (PSC0+1)/160
The maximum period is 1.6s when PSC0 = 255.
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
Address 0x03 (PWM0)
Bit #
Default value
PWM0 register determines the duty cycle of DIM0. The LED outputs are LOW (LED on) when the count is less than the value in PWM0 and HIGH (LED off) when
it is greater. If PWM0 is programmed with 0x00, LED output is always HIGH (LED off).
7
1
6
0
5
0
4
0
3
0
2
0
1
0
0
0
The duty cycle of DIM0 is: PWM0/256
Default value is 50% duty cycle.
Address 0x04 (PSC1)
Bit #
Default value
PSC1 register is used to program the period of DIM1.
DIM1 = (PSC1 + 1)/160
The maximum period is 1.6s when PSC1 = 255.
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
L
www.national.com
9
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LP3945 | Battery Charge Management System |
| LP3945ILD | Battery Charge Management System |
| LP3945ILDX | Battery Charge Management System |
| LP3961ES-1.8 | 800mA Fast Ultra Low Dropout Linear Regulators |
| LP3961ES-2.5 | 800mA Fast Ultra Low Dropout Linear Regulators |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LP3944ISQ | 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 |
| LP3944ISQ/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 |
| LP3944ISQEV | 功能描述:電源管理IC開發(fā)工具 LP3944 EVAL BOARD RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| LP3944ISQEV/NOPB | 制造商:Texas Instruments 功能描述:Evaluation Board For LED Driver 8Segment 2.5V/3.3V/5V T/R |
| LP3944ISQX | 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)。