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TLC5945

更新时间： 2024-11-30 04:28:07
品牌 Logo 应用领域
德州仪器 - TI 驱动器
页数 文件大小 规格书
29页 999K
描述
16-CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL

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TLC5945 数据手册

 浏览型号TLC5945的Datasheet PDF文件第2页浏览型号TLC5945的Datasheet PDF文件第3页浏览型号TLC5945的Datasheet PDF文件第4页浏览型号TLC5945的Datasheet PDF文件第5页浏览型号TLC5945的Datasheet PDF文件第6页浏览型号TLC5945的Datasheet PDF文件第7页 
TLC5945  
PWP  
RHB  
www.ti.com  
SLVS755–MARCH 2007  
16-CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL  
FEATURES  
APPLICATIONS  
•
Monocolor, Multicolor, Full-Color LED  
Displays  
•
•
•
16 Channels  
12-bit (4096 Steps) Grayscale PWM Control  
Dot Correction  
•
•
LED Signboards  
Display Back-lighting  
–
6 bit (64 Steps)  
Drive Capability (Constant-Current Sink)  
0 mA to 80 mA  
•
DESCRIPTION  
–
The TLC5945 is a 16-channel, constant-current sink,  
LED driver. Each channel has an individually  
adjustable 4096-step grayscale PWM brightness  
control and a 64-step constant-current sink (dot  
correction). The dot correction adjusts the brightness  
variations between LED channels and other LED  
drivers. Both grayscale control and dot correction are  
accessible via a serial interface. A single external  
resistor sets the maximum current value of all 16  
channels.  
•
•
•
•
•
•
LED Power Supply Voltage up to 17 V  
VCC = 3.0 V to 5.5 V  
Serial Data Interface  
30-MHz Data Transfer Rate  
CMOS Level I/O  
Error Information  
–
–
LOD: LED Open Detection  
TEF: Thermal Error Flag  
The TLC5945 features two error information circuits.  
The LED open detection (LOD) indicates a broken or  
disconnected LED at an output terminal. The thermal  
error flag (TEF) indicates an overtemperature  
condition.  
VCC  
GND  
SCLK  
SIN  
XLAT  
CNT  
MODE  
Constant-Current  
Driver  
1
0
12−Bit Grayscale  
PWM Control  
GS Register  
OUT0  
V
IREF  
REF  
=1.24  
MODE  
Max. OUTn  
Current  
11  
5
0
1
0
V
0
DC Register  
6−Bit Dot Correction  
LED Open Detection  
0
GSCLK  
BLANK  
GS Counter  
CNT  
Input  
Shift  
Register  
CNT  
0
96  
Status  
Information:  
Constant-Current  
Driver  
12−Bit Grayscale  
PWM Control  
192  
192  
GS Register  
12  
OUT1  
23  
11  
LOD,  
TED,  
DC DATA  
95  
96  
96  
DC Register  
6−Bit Dot Correction  
LED Open Detection  
191  
1
0
6
MODE  
96  
Temperature  
LED Open  
Detection  
(LOD)  
CNT  
Error Flag  
(TEF)  
Input  
Shift  
Register  
Constant-Current  
Driver  
12−Bit Grayscale  
PWM Control  
GS Register  
180  
OUT15  
191  
95  
XERR  
DC Register  
90  
6−Bit Dot Correction  
LED Open Detection  
191  
SOUT  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PowerPAD is a trademark of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2007, Texas Instruments Incorporated  
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TLC5945 替代型号

型号 品牌 替代类型 描述 数据表
TLC5946 TI

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