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TLC5940 PDF预览

TLC5940

更新时间： 2024-11-29 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 1385K
描述
16 CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL

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TLC5940 数据手册

 浏览型号TLC5940的Datasheet PDF文件第2页浏览型号TLC5940的Datasheet PDF文件第3页浏览型号TLC5940的Datasheet PDF文件第4页浏览型号TLC5940的Datasheet PDF文件第5页浏览型号TLC5940的Datasheet PDF文件第6页浏览型号TLC5940的Datasheet PDF文件第7页 
TLC5940  
PWP  
RHB  
NT  
www.ti.com  
SLVS515A–DECEMBER 2004–REVISED AUGUST 2005  
16 CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL  
FEATURES  
APPLICATIONS  
•
•
•
•
Monocolor, Multicolor, Fullcolor LED Displays  
LED Signboards  
Display Backlighting  
General, High-Current LED Drive  
•
•
•
16 Channels  
12 bit (4096 Steps) Grayscale PWM Control  
Dot Correction  
– 6 bit (64 Steps)  
– Storable in Integrated EEPROM  
Drive Capability (Constant Current Sink)  
– 0 mA to 60 mA (VCC < 3.6 V)  
– 0 mA to 120 mA (VCC > 3.6 V)  
LED Power Supply Voltage up to 17 V  
VCC = 3 V to 5.5 V  
DESCRIPTION  
•
The TLC5940 is a 16-channel constant-current sink  
LED driver. Each channel has an individually adjust-  
able 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. The  
dot correction data is stored in an integrated  
EEPROM. 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.  
•
•
•
•
•
•
•
Serial Data Interface, SPI comp.  
Controlled In-Rush Current  
30-MHz Data Transfer Rate  
CMOS Level I/O  
Error Information  
The TLC5940 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 con-  
dition.  
– LOD: LED Open Detection  
– TEF: Thermal Error Flag  
VCC  
GND  
SCLK  
SIN  
XLAT  
DCPRG  
CNT  
VPRG  
Constant Current  
1
0
12−Bit Grayscale  
PWM Control  
Driver  
OUT0  
GS Register  
DC Register  
V
=1.24 V  
REF  
IREF  
VPRG  
0
0
11  
5
Max. OUTn  
Current  
Delay  
x0  
0
DCPRG  
1
1
6−Bit Dot  
Correction  
0
0
GSCLK  
BLANK  
GS Counter  
CNT  
DC EEPROM  
VPRG  
0
5
LED Open Detection  
Input  
Shift  
Register  
CNT  
0
96  
Status  
Information:  
Constant Current  
Driver  
192  
192  
12−Bit Grayscale  
PWM Control  
GS Register  
OUT1  
LOD,  
12  
6
23  
TED,  
DCPRG  
1
Delay  
x1  
96  
DC DATA  
191  
95  
96  
6−Bit Dot  
Correction  
DC Register  
1
0
11  
0
VPRG  
DC EEPROM  
6
11  
LED Open Detection  
96  
LED Open  
Detection  
(LOD)  
VPRG  
CNT  
Temperature  
Error Flag  
(TEF)  
Blank  
1
0
Input  
Constant Current  
Driver  
12−Bit Grayscale  
PWM Control  
Shift  
GS Register  
OUT15  
Register  
180  
191  
Delay  
x15  
DCPRG  
1
XERR  
6−Bit Dot  
DC Register  
Correction  
90  
95  
0
191  
DC EEPROM  
LED Open Detection  
90  
95  
SOUT  
VPRG  
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 © 2004–2005, Texas Instruments Incorporated  
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TLC5940 替代型号

型号 品牌 替代类型 描述 数据表
TLC5946 TI

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