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| 型号： | PCA9550D,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 6/26页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER BLINKER 8-SOIC |
| 标准包装： | 2,500 |
| 拓扑： | 开路漏极，PWM |
| 输出数： | 2 |
| 内部驱动器： | 是 |
| 类型 - 主要： | LED 闪烁器 |
| 频率： | 400kHz |
| 电源电压： | 2.3 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
| 配用： | 568-4002-ND - DEMO BOARD I2C |
| 其它名称： | 935272882118 PCA9550D-T PCA9550D-T-ND |
NXP Semiconductors
PCA9550
2-bit I 2 C-bus LED driver with programmable blink rates
6.3.4 PSC1 - Frequency Prescaler 1
PSC1 is used to program the period of the PWM output.
The period of BLINK1 = (PSC1 + 1) / 44.
Table 8.
PSC1 - Frequency Prescaler 1 register description
Bit
Symbol
Default
7
PSC1[7]
1
6
PSC1[6]
1
5
PSC1[5]
1
4
PSC1[4]
1
3
PSC1[3]
1
2
PSC1[2]
1
1
PSC1[1]
1
0
PSC1[0]
1
6.3.5 PWM1 - Pulse Width Modulation 1
The PWM1 register determines the duty cycle of BLINK1. The outputs are LOW (LED off)
when the count is less than the value in PWM1 and HIGH when it is greater. If PWM1 is
programmed with 00h, then the PWM1 output is always LOW.
The duty cycle of BLINK1 = (256 ? PWM1) / 256.
Table 9.
PWM1 - Pulse Width Modulation 1 register description
Bit
Symbol
Default
7
PWM1
[7]
1
6
PWM1
[6]
0
5
PWM1
[5]
0
4
PWM1
[4]
0
3
PWM1
[3]
0
2
PWM1
[2]
0
1
PWM1
[1]
0
0
PWM1
[0]
0
6.3.6 LS0 - LED selector
The LS0 LED select register determines the source of the LED data.
00 = output is set LOW (LED on)
01 = output is set high-impedance (LED off; default)
10 = output blinks at PWM0 rate
11 = output blinks at PWM1 rate
Table 10.
LS0 - LED selector register description
Bit
7
6
5
4
3
2
1
0
Symbol
LS0[7:4]
LED1
LED0
Default
1
1
1
1
0
1
0
1
PCA9550_5
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 05 — 13 October 2008
6 of 26
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相关代理商/技术参数 |
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| PCA9550DP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:2-bit I2C LED driver with programmable blink rates |
| PCA9550DP,118 | 功能描述:LED照明驱动器 2-BIT I2C FM OD LED RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| PCA9550DP,118-CUT TAPE | 制造商:NXP 功能描述:PCA9550 Series 2-Bit I2C-Bus LED Driver w/ Programmable Blink Rates - TSSOP - 8 |
| PCA9550DP118 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
| PCA9550DP-T | 功能描述:LED照明驱动器 2-BIT I2C FM OD LED BLK RST RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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