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TLC5949DBQ PDF预览

TLC5949DBQ

更新时间: 2024-11-19 12:25:11
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德州仪器 - TI 驱动器
页数 文件大小 规格书
51页 1434K
描述
16-Channel, 12-Bit, ES-PWM, Full Self-Diagnosis LED Driver for 7-Bit Global BC LED Lamp

TLC5949DBQ 数据手册

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TLC5949  
www.ti.com  
SBVS219A DECEMBER 2012REVISED DECEMBER 2012  
16-Channel, 12-Bit, ES-PWM, Full Self-Diagnosis LED Driver for  
7-Bit Global BC LED Lamp  
Check for Samples: TLC5949  
1
FEATURES  
2
16 Constant-Current Sink Output Channels  
Pre-Thermal Warning (PTW)  
Sink Current Capability with  
Maximum BC Data: 2 mA to 45 mA  
Four-Channel Grouped Delay Switching to  
Prevent Inrush Current  
Global Brightness Control (BC):  
Operating Temperature: –40°C to +85°C  
7-Bit (128 Steps) with 25% to 100% Range  
APPLICATIONS  
Grayscale Control (GS) with Enhanced  
Spectrum or Conventional PWM:  
LED Video Displays  
LED Signboards  
12-Bit (4096 Steps)  
LED Power-Supply Voltage: Up to 10 V  
VCC: 3.0 V to 3.6 V  
DESCRIPTION  
The TLC5949 is a 16-channel, constant-current sink  
LED driver. Each channel has an individually-  
adjustable, pulse width modulation (PWM) grayscale  
(GS) brightness control with 4096 steps. All channels  
have a 128-step global brightness control (BC). BC  
adjusts brightness deviation with other LED drivers.  
GS and BC data are accessible with a serial interface  
port.  
Constant-Current Accuracy:  
Channel-to-Channel: ±0.6% (typ), ±2% (max)  
Device-to-Device: ±1% (typ), ±4% (max)  
Data Transfer Rate: 33 MHz  
Grayscale Control Clock: 33 MHz  
Auto Display Repeat and Auto Data Refresh  
Display Timing Reset  
The TLC5949 has six error flags: LED open detection  
(LOD), LED short detection (LSD), output leakage  
detection (OLD), reference current terminal short flag  
detection (ISF), pre-thermal warning (PTW), and  
thermal error flag (TEF). The error detection results  
can be read with a serial interface port.  
Power-Save Mode to Minimize VCC Current  
LOD and LSD with Invisible Detection  
Mode (IDM)  
Output Leakage Detection (OLD)  
Current Reference Terminal Short Flag (ISF)  
Thermal Shutdown (TSD) and Error Flag (TEF)  
VLED  
¼
¼
¼
¼
¼
¼
¼
¼
OUT0  
SIN  
OUT15  
OUT0  
SIN  
OUT15  
SOUT  
DATA  
SCLK  
LAT  
SOUT  
VCC  
VCC  
SCLK  
LAT  
SCLK  
LAT  
Device 1  
Device n  
VCC  
GND  
VCC  
GND  
GSCLK  
GSCLK  
IREF  
GSCLK  
IREF  
Controller  
RIREF  
RIREF  
3
Data Read  
Typical Application Circuit (Multiple Daisy-Chained TLC5949s)  
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
All 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 © 2012, Texas Instruments Incorporated  
 

TLC5949DBQ 替代型号

型号 品牌 替代类型 描述 数据表
TLC5949DBQR TI

完全替代

16-Channel, 12-Bit, ES-PWM, Full Self-Diagnosis LED Driver for 7-Bit Global BC LED Lamp

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