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TLC59461

更新时间： 2024-11-30 07:04:35
品牌 Logo 应用领域
德州仪器 - TI 驱动器
页数 文件大小 规格书
33页 819K
描述
16-Channel, 12-Bit PWM LED Driver with 6-Bit Dot Correction

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TLC59461 数据手册

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TLC59461  
www.ti.com ............................................................................................................................................... SLVS896A–NOVEMBER 2008–REVISED MARCH 2009  
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 TLC59461 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 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 TLC59461 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)  
To allow lower power dissipation, the TLC59461 does  
not implement the Auto Output Off function available  
in the TLC5946.  
•
•
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  
TLC59461  
TLC59461  
ICn  
VCC  
VCC  
Controller  
MODE  
BLANK  
GSCLK  
IN  
IC1  
MODE  
BLANK  
GSCLK  
MODE  
BLANK  
GSCLK  
VCC  
XHALF  
GND  
VCC  
XHALF  
GND  
IREF  
IREF  
RIREF  
RIREF  
6
Typical Application Circuit (Multiple Daisy-Chained TLC59461s)  
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 © 2008–2009, Texas Instruments Incorporated  
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TLC59461 替代型号

型号 品牌 替代类型 描述 数据表
TLC5946 TI

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