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TLC5924 PDF预览

TLC5924

更新时间： 2024-11-27 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
23页 743K
描述
16-CHANNEL LED DRIVER WITH DOT CORRECTION AND PRE-CHARGE FET

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TLC5924 数据手册

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TLC5924  
DAP  
RHB  
www.ti.com  
SLVS626–JUNE 2006  
16-CHANNEL LED DRIVER WITH DOT CORRECTION AND PRE-CHARGE FET  
FEATURES  
APPLICATIONS  
•
•
•
•
Monocolor, Multicolor, Fullcolor LED Display  
Monocolor, Multicolor LED Signboard  
Display Backlighting  
•
16 Channels  
•
Drive Capability  
– 0 to 80 mA (Constant-Current Sink)  
Constant Current Accuracy: ±1% (typical)  
Serial Data Interface  
Multicolor LED lighting applications  
•
•
•
•
•
•
•
•
•
DESCRIPTION  
Fast Switching Output: Tr / Tf = 10ns (typical)  
CMOS Level Input/Output  
The TLC5924 is a 16 channel constant-current sink  
driver. Each channel has a On/Off state and a  
128-step adjustable constant current sink (dot  
correction). The dot correction adjusts the brightness  
variations between LED, LED channels and other  
LED drivers. Both dot correction and On/Off state are  
accessible via a serial data interface. A single  
external resistor sets the maximum current of all 16  
channels.  
30 MHz Data Transfer Rate  
VCC = 3.0 V to 5.5 V  
Operating Temperature = –40°C to 85°C  
LED Supply Voltage up to 17 V  
32-pin HTSSOP(PowerPAD™) and QFN  
Packages  
•
Dot Correction  
Each constant-current output has a pre-charge FET  
that enables an improvement in image quality of the  
dynamic-drive LED display.  
– 7 bit (128 Steps)  
– individual adjustable for each channel  
Controlled In-Rush Current  
Pre-Charge FET  
The TLC5924 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 over-temperature  
condition.  
•
•
•
Error Information  
– LOD: LED Open Detection  
– TEF: Thermal Error Flag  
FUNCTIONAL BLOCK DIAGRAM  
VCC GND PGND SCLK  
SIN  
VUP  
BLANK  
MODE  
XLAT  
VUP  
MODE  
Constant Current  
Driver  
0
0
LOD  
0
1
1
0
OUT0  
Delay  
x0  
On/Off Register  
0
Max. OUTn  
Current  
IREF  
0
7−bit DC Register  
6
On/Off  
BLANK  
VUP  
Input  
Shift  
Register  
1
16  
16  
Constant Current  
Driver  
LOD  
OUT1  
Delay  
x1  
1
On/Off Register  
112  
15  
0
7
7−bit DC Register  
13  
LED Open  
Detection  
(LOD)  
DC Input  
Shift  
Register  
BLANK  
VUP  
Temperature  
Error Flag  
(TEF)  
BLANK  
Constant Current  
Driver  
15  
1
0
LOD  
OUT15  
Delay  
x15  
15  
111  
On/Off Register  
XERR  
105  
7−bit DC Register  
111  
0
1
MODE  
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.  
Copyright © 2006, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
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TLC5924 替代型号

型号 品牌 替代类型 描述 数据表
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