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TLC5946_0806

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
35页 796K
描述
16-Channel, 12-Bit PWM LED Driver with 6-Bit Dot Correction

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TLC5946_0806 数据手册

 浏览型号TLC5946_0806的Datasheet PDF文件第2页浏览型号TLC5946_0806的Datasheet PDF文件第3页浏览型号TLC5946_0806的Datasheet PDF文件第4页浏览型号TLC5946_0806的Datasheet PDF文件第5页浏览型号TLC5946_0806的Datasheet PDF文件第6页浏览型号TLC5946_0806的Datasheet PDF文件第7页 
TLC5946  
www.ti.com .......................................................................................................................................................... SLVS824B–MARCH 2008–REVISED JUNE 2008  
16-Channel, 12-Bit PWM LED Driver with  
6-Bit Dot Correction  
1
FEATURES  
APPLICATIONS  
•
Monochrome, Multicolor, Full-Color LED  
Displays  
LED Signboards  
Display Backlighting  
23  
•
16 Channels, Constant Current Sink Output  
40-mA Capability (Constant Current Sink)  
12-Bit (4096 Steps) Grayscale PWM Control  
6-Bit (64 Steps) Dot Correction  
•
•
•
•
•
•
•
•
LED Power-Supply Voltage up to 17 V  
VCC = 3.0 V to 5.5 V  
DESCRIPTION  
The TLC5946 is a 16-channel, constant current sink  
LED driver. Each channel is individually adjustable  
with 4096 pulse-width modulated (PWM) steps and  
64 constant current sink steps for dot correction. The  
dot correction adjusts the brightness variations  
between LEDs. Both grayscale control and dot  
correction are accessible via a serial interface. The  
maximum current value of all 16 channels can be set  
by a single external resistor.  
Constant Current Accuracy:  
–
–
Channel-to-Channel = ±1% (typ)  
Device-to-Device = ±2% (typ)  
•
•
•
•
•
•
30-MHz Data Transfer Rate  
33-MHz Grayscale PWM Clock  
Extended Serial Interface  
CMOS Level I/O  
The TLC5946 has two error information circuits: one  
for LED open detection (LOD), and a thermal error  
flag (TEF). LOD detects a broken or disconnected  
LED during display period. TEF indicates an  
over-temperature condition.  
Schmitt Buffer Input  
Readable Error Information:  
–
Continuous Base LED Open Detection  
(LOD)  
–
Thermal Error Flag (TEF)  
•
•
Noise Reduction:  
4-Channel Grouped Delay  
–
Operating Temperature: –40°C to +85°C  
VLED  
VLED  
VLED  
VLED  
VCC  
¼
¼
¼
¼
¼
OUT0  
OUT15  
SOUT  
OUT0  
SIN  
OUT15  
SOUT  
OUT  
SIN  
XERR  
XERR  
SCLK  
XLAT  
XERR  
SCLK  
SCLK  
XLAT  
XLAT  
TLC5946  
TLC5946  
ICn  
VCC  
VCC  
Controller  
MODE  
IC1  
MODE  
MODE  
BLANK  
GSCLK  
BLANK  
VCC  
XHALF  
GND  
VCC  
XHALF  
GND  
BLANK  
GSCLK  
GSCLK  
IN  
IREF  
IREF  
RIREF  
RIREF  
6
Typical Application Circuit (Multiple Daisy-Chained TLC5946s)  
1
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.  
2
3
PowerPAD is a trademark of Texas Instruments, Inc.  
All other trademarks are the property of their respective owners.  
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 © 2008, Texas Instruments Incorporated  
 
 
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