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PCA9635PW PDF预览

PCA9635PW

更新时间： 2024-01-10 20:20:43
品牌 Logo 应用领域
恩智浦 - NXP 显示驱动器驱动程序和接口接口集成电路光电二极管
页数 文件大小 规格书
35页 188K
描述
16-bit Fm+ I2C-bus LED driver

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PCA9635PW 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：TSSOP, TSSOP28,.25Reach Compliance Code：unknown
风险等级：5.84数据输入模式：SERIAL
接口集成电路类型：LED DISPLAY DRIVERJESD-30 代码：R-PDSO-G28
长度：9.7 mm复用显示功能：NO
功能数量：1区段数：16
端子数量：28最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：PLASTIC/EPOXY
封装代码：TSSOP封装等效代码：TSSOP28,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
电源：2.5/5 V认证状态：Not Qualified
座面最大高度：1.1 mm子类别：Display Drivers
最大供电电压：5.5 V最小供电电压：2.3 V
标称供电电压：3 V表面贴装：YES
温度等级：INDUSTRIAL端子形式：GULL WING
端子节距：0.65 mm端子位置：DUAL
宽度：4.4 mm最小 fmax：1 MHz
Base Number Matches：1

PCA9635PW 数据手册

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PCA9635  
16-bit Fm+ I2C-bus LED driver  
Rev. 06 — 11 September 2008  
Product data sheet  
1. General description  
The PCA9635 is an I2C-bus controlled 16-bit LED driver optimized for  
Red/Green/Blue/Amber (RGBA) color mixing applications. Each LED output has its own  
8-bit resolution (256 steps) fixed frequency individual PWM controller that operates at  
97 kHz with a duty cycle that is adjustable from 0 % to 99.6 % to allow the LED to be set  
to a specific brightness value. An additional 8-bit resolution (256 steps) group PWM  
controller has both a fixed frequency of 190 Hz and an adjustable frequency between  
24 Hz to once every 10.73 seconds with a duty cycle that is adjustable from 0 % to 99.6 %  
that is used to either dim or blink all LEDs with the same value.  
Each LED output can be off, on (no PWM control), set at its individual PWM controller  
value or at both individual and group PWM controller values. The LED output driver is  
programmed to be either open-drain with a 25 mA current sink capability at 5 V or  
totem-pole with a 25 mA sink, 10 mA source capability at 5 V. The PCA9635 operates with  
a supply voltage range of 2.3 V to 5.5 V and the outputs are 5.5 V tolerant. LEDs can be  
directly connected to the LED output (up to 25 mA, 5.5 V) or controlled with external  
drivers and a minimum amount of discrete components for larger current or higher voltage  
LEDs.  
The PCA9635 is one of the first LED controller devices in a new Fast-mode Plus (Fm+)  
family. Fm+ devices offer higher frequency (up to 1 MHz) and more densely populated bus  
operation (up to 4000 pF).  
The active LOW Output Enable input pin (OE) allows asynchronous control of the LED  
outputs and can be used to set all the outputs to a defined I2C-bus programmable logic  
state. The OE can also be used to externally PWM the outputs, which is useful when  
multiple devices need to be dimmed or blinked together using software control.  
Software programmable LED Group and three Sub Call I2C-bus addresses allow all or  
defined groups of PCA9635 devices to respond to a common I2C-bus address, allowing  
for example, all red LEDs to be turned on or off at the same time or marquee chasing  
effect, thus minimizing I2C-bus commands. Seven hardware address pins allow up to  
126 devices on the same bus.  
The Software Reset (SWRST) Call allows the master to perform a reset of the PCA9635  
through the I2C-bus, identical to the Power-On Reset (POR) that initializes the registers to  
their default state causing the outputs to be set HIGH (LED off). This allows an easy and  
quick way to reconfigure all device registers to the same condition.  
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