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| 型号： | PCA9553D/01,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 11/26页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER LINEAR 8-SOIC |
| 标准包装： | 2,500 |
| 拓扑： | 开路漏极，PWM |
| 输出数： | 4 |
| 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 |
| 其它名称： | 935272825118 PCA9553D/01-T PCA9553D/01-T-ND |
NXP Semiconductors
PCA9553
4-bit I 2 C-bus LED driver with programmable blink rates
no acknowledge
from master
slave address
data from port
data from port
SDA S
1
1
0
0
0
1
0
1
A
DATA 1
A
DATA 4
NA P
START condition
R/W
acknowledge
from slave
acknowledge
from master
STOP
condition
read from
port
t h(D)
t su(D)
data into
port
DATA 2
DATA 3
DATA 4
002aad748
This ?gure assumes the command byte has previously been programmed with 00h.
PCA9553/01 shown.
Fig 14. Read input port register
9. Application design-in information
5V
5V
I 2 C-BUS/SMBus
MASTER
SDA
SCL
10 k ?
10 k ?
SDA
SCL
V DD
LED0
LED1
LED2
LED3
PCA9553
V SS
002aad749
Fig 15. Typical application
9.1 Minimizing I DD when the I/Os are used to control LEDs
When the I/Os are used to control LEDs, they are normally connected to V DD through a
resistor as shown in Figure 15 . Since the LED acts as a diode, when the LED is off the I/O
V I is about 1.2 V less than V DD . The supply current, I DD , increases as V I becomes lower
than V DD and is speci?ed as ? I DD in Table 13 “Static characteristics” .
Designs needing to minimize current consumption, such as battery power applications,
should consider maintaining the I/O pins greater than or equal to V DD when the LED is off.
Figure 16 shows a high value resistor in parallel with the LED. Figure 17 shows V DD less
than the LED supply voltage by at least 1.2 V. Both of these methods maintain the I/O V I at
or above V DD and prevents additional supply current consumption when the LED is off.
PCA9553_6
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 06 — 29 December 2008
11 of 26
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9553D02 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates |
| PCA9553DP | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:4-bit I2C LED driver with programmable blink rates |
| PCA9553DP/01 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:4-bit I2C-bus LED driver with programmable blink rates |
| PCA9553DP/01,118 | 功能描述:LED照明驱动器 4BIT I2C FM OD LED BLK 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 |
| PCA9553DP/01118 | 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: |
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