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| 型号： | PCA9634D,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 24/38页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER RGBA 20-SOIC |
| 产品培训模块： | LED Controllers I²C Bus Fundamentals |
| 标准包装： | 1 |
| 拓扑： | 开路漏极，PWM |
| 输出数： | 8 |
| 内部驱动器： | 两者兼有 |
| 类型 - 主要： | 背光，LED 闪烁器 |
| 类型 - 次要： | RGBA |
| 频率： | 25MHz |
| 电源电压： | 2.3 V ~ 5.5 V |
| 输出电压： | 5.5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SO |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 产品目录页面： | 845 (CN2011-ZH PDF) |
| 其它名称： | 568-4065-6 |
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NXP Semiconductors
PCA9634
8-bit Fm+ I 2 C-bus LED driver
10. Application design-in information
V DD = 2.5 V, 3.3 V or 5.0 V
5V
12 V
I 2 C-BUS/SMBus
MASTER
SDA
SCL
OE
10 k ?
10 k ?
10 k ? (1)
SDA
SCL
OE
V DD
LED0
LED1
LED2
LED3
A0
A1
A2
A3
A4
A5
A6
V SS
PCA9634
LED4
LED5
LED6
LED7
5V
12 V
002aac137
I 2 C-bus address = 0010 101X.
All of the 8 LEDn outputs con?gurable as either open-drain or totem pole. Mixing of con?gurations is not possible.
(1) OE requires pull-up resistor if control signal from the master is open-drain.
Fig 18. Typical application
Question 1: What kind of edge rate control is there on the outputs?
? The typical edge rates depend on the output con?guration, supply voltage, and the
applied load. The outputs can be con?gured as either open-drain NMOS or
totem-pole outputs. If the customer is using the part to directly drive LEDs, they
should be using it in an open-drain NMOS, if they are concerned about the maximum
ISS and ground bounce. The edge rate control was designed primarily to slow down
the turn-on of the output device; it turns off rather quickly (~1.5 ns). In simulation, the
typical turn-on time for the open-drain NMOS was ~14 ns (V DD = 3.6 V; C L = 50 pF;
R PU = 500 ? ).
Question 2: Is ground bounce possible?
? Ground bounce is a possibility, especially if all 16 outputs are changed at full current
(25 mA each). There is a fair amount of decoupling capacitance on chip (~50 pF),
which is intended to suppress some of the ground bounce. The customer will need to
determine if additional decoupling capacitance externally placed as close as
physically possible to the device is required.
PCA9634_6
? NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 06 — 12 September 2008
24 of 38
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCA9634D-T | 功能描述:LED照明驱动器 8BIT I2C FM+ TP LED CON RST OE 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 |
| PCA9634PW | 功能描述:LED照明驱动器 8BIT I2C FM+ TP LED CON RST OE 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 |
| PCA9634PW,112 | 功能描述:LED照明驱动器 8BIT I2C FM+ TP 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 |
| PCA9634PW,118 | 功能描述:LED照明驱动器 8BIT I2C FM+ TP LED CON RST OE 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 |
| PCA9634PW,118-CUT TAPE | 制造商:NXP 功能描述:PCA9634 Series 5.5 V 400 kHz SMT 8 bit Fm+I2C Bus LED Driver - TSSOP-20 |
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