5秒后页面跳转
捷配首页

Datasheet > PCA9955ATW
PCA9955ATW PDF预览

PCA9955ATW

更新时间： 2024-11-15 20:02:51
品牌 Logo 应用领域
恩智浦 - NXP 驱动光电二极管接口集成电路
页数 文件大小 规格书
62页 1624K
描述
LED DISPLAY DRIVER

阅读下载

中文翻译

获取价格

PCA9955ATW 技术参数

生命周期：Obsolete包装说明：HTSSOP-28
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.64
数据输入模式：SERIAL接口集成电路类型：LED DISPLAY DRIVER
JESD-30 代码：R-PDSO-G28长度：9.7 mm
复用显示功能：YES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：HTSSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
座面最大高度：1.1 mm最大供电电压：5.5 V
最小供电电压：3 V标称供电电压：3.3 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：0.1 MHzBase Number Matches：1

PCA9955ATW 数据手册

 浏览型号PCA9955ATW的Datasheet PDF文件第2页浏览型号PCA9955ATW的Datasheet PDF文件第3页浏览型号PCA9955ATW的Datasheet PDF文件第4页浏览型号PCA9955ATW的Datasheet PDF文件第5页浏览型号PCA9955ATW的Datasheet PDF文件第6页浏览型号PCA9955ATW的Datasheet PDF文件第7页 
PCA9955A  
16-channel Fm+ I2C-bus 57 mA/20 V constant current LED  
driver  
Rev. 2 — 3 April 2014  
Product data sheet  
1. General description  
The PCA9955A is an I2C-bus controlled 16-channel constant current LED driver optimized  
for dimming and blinking 57 mA Red/Green/Blue/Amber (RGBA) LEDs in amusement  
products. Each LED output has its own 8-bit resolution (256 steps) fixed frequency  
individual PWM controller that operates at 31.25 kHz with a duty cycle that is adjustable  
from 0 % to 100 % 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 122 Hz  
and an adjustable frequency between 15 Hz to once every 16.8 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 PCA9955A operates  
with a supply voltage range of 3 V to 5.5 V and the constant current sink LED outputs  
allow up to 20 V for the LED supply. The output peak current is adjustable with an 8-bit  
linear DAC from 225 A to 57 mA.  
Gradation control for all current sources is achieved via the I2C-bus serial interface and  
allows user to ramp current automatically without MCU intervention. 8-bit DACs are  
available to adjust brightness levels for each LED current source. There are four  
selectable gradation control groups and each group has independently four registers to  
control ramp-up and ramp-down rate, step time, hold ON/OFF time and final hold ON  
output current. Two gradation operation modes are available for each group, one is single  
shot mode (output pattern once) and the other is continuous mode (output pattern repeat).  
Each channel can be set to either gradation mode or normal mode and assigned to any  
one of these four gradation control groups.  
This device has built-in open, short load and overtemperature detection circuitry. The error  
information from the corresponding register can be read via the I2C-bus. Additionally, a  
thermal shutdown feature protects the device when internal junction temperature exceeds  
the limit allowed for the process.  
The PCA9955A device has a Fast-mode Plus (Fm+) I2C-bus interface. Fm+ devices offer  
higher frequency (up to 1 MHz) or more densely populated bus operation (up to 4000 pF).  
The active LOW output enable input pin (OE) blinks all the LED outputs and can be used  
to externally PWM the outputs, which is useful when multiple devices need to be dimmed  
or blinked together without using software control.  
Software programmable LED Group and three Sub Call I2C-bus addresses allow all or  
defined groups of PCA9955A 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. On power-up, PCA9955A has a unique  
1234567...62

中文翻译

下载PDF

与PCA9955ATW相关器件

型号 品牌 获取价格 描述 数据表
PCA9955B NXP

获取价格

 		16-channel Fm I2C-bus 57 mA/20 V constant current LED driver
PCA9955BTW NXP

获取价格

 		16-channel Fm I2C-bus 57 mA/20 V constant current LED driver
PCA9955BTW/Q900 NXP

获取价格

 		LED DISPLAY DRIVER
PCA9955BTW/Q900J NXP

获取价格

 		PCA9955B - 16-channel Fm+ I²C-bus 57 mA/20 V
PCA9955BTWJ NXP

获取价格

 		PCA9955B - 16-channel Fm+ I²C-bus 57 mA/20 V
PCA9955BTWQ900 NXP

获取价格

 		16-channel Fm I2C-bus 57 mA/20 V constant current LED driver
PCA9955Q900 NXP

获取价格

 		16-channel Fm I2C-bus 57 mA constant current LED driver AEC-Q100 compliant
PCA9955TW NXP

获取价格

 		IC LED DISPLAY DRIVER, Display Driver
PCA9955TW/Q900 NXP

获取价格

 		LED DISPLAY DRIVER
PCA9956ATWY NXP

获取价格

 		PCA9956A - 24-channel Fm+ I2C-bus 57 mA/20 V constant current LED driver TSSOP 38-Pin

与PCA9955ATW相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证