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TLC5941PWP Datasheet

  • TLC5941PWP

  • 16-CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM ...

  • 505.60KB

  • 23页

  • TI

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TLC5941
www.ti.com
PWP
RHB
NT
SLVS589 鈥?JULY 2005
16-CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM
CONTROL
FEATURES
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16 Channels
12-bit (4096 Steps) Grayscale PWM Control
Dot Correction
鈥?6 bit (64 Steps)
Drive Capability (Constant-Current Sink)
鈥?0 mA to 80 mA
LED Power Supply Voltage up to 17 V
V
CC
= 3.0 V to 5.5 V
Serial Data Interface, SPI Compatible
Controlled In-Rush Current
30-MHz Data Transfer Rate
CMOS Level I/O
Error Information
鈥?LOD: LED Open Detection
鈥?TEF: Thermal Error Flag
APPLICATIONS
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Monocolor, Multicolor, Full-Color LED Dis-
plays
LED Signboards
Display Back-lighting
DESCRIPTION
The TLC5941 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. 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.
The TLC5941 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.
XLAT
CNT
1 0
GS Register
12鈭払it Grayscale
PWM Control
Constant-Current
Driver
Delay
x0
6鈭払it Dot Correction
OUT0
VCC
GND
SCLK
SIN
MODE
IREF
Max. OUTn
Current
V REF
=1.24V
MODE
0
1 0
0
11
DC Register
0
5
GSCLK
BLANK
GS Counter
CNT
Input
Shift
Register
192
LED Open Detection
0
Status
Information:
LOD,
TED,
DC DATA
191
96
192
CNT
GS Register
12
23
12鈭払it Grayscale
PWM Control
Constant-Current
Driver
Delay
x1
OUT1
96
1 0
95
96
DC Register
6
11
6鈭払it Dot Correction
MODE
LED Open Detection
96
Temperature
Error Flag
(TEF)
LED Open
Detection
(LOD)
CNT
Input
Shift
Register
180
GS Register
191
12鈭払it Grayscale
PWM Control
Constant-Current
Driver
Delay
x15
OUT15
XERR
90
191
DC Register
95
6鈭払it Dot Correction
LED Open Detection
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.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright 漏 2005, Texas Instruments Incorporated

TLC5941PWP 产品属性

  • 50

  • 集成电路 (IC)

  • PMIC - LED 驱动器

  • -

  • 是

  • -

  • PWM

  • 16

  • 是

  • 背光

  • 颜色

  • 30MHz

  • 3 V ~ 5.5 V

  • 17V

  • 表面贴装

  • 28-SOIC（0.173"，4.40mm 宽）裸露焊盘

  • 28-HTSSOP

  • 管件

  • -40°C ~ 85°C

  • 296-21104-ND - EVALUATION MODULE FOR TLC5941

  • 296-18617-5

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