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TLC5943 Datasheet PDF

Part Number TLC5943
Description 16-Channel 16-Bit PWM LED Driver
Manufacture etcTI
Total Page 30 Pages
PDF Download Download TLC5943 Datasheet PDF

Features: Datasheet pdf TLC5943 www.ti.com 16-Channel, 16-Bit PWM LED Driver with 7-Bit Global Bright ness Control SBVS101 – DECEMBER 2007 FEATURES 1 •23 16 Channels, Constan t Current Sink Output • 50-mA Capabil ity (Constant Current Sink) • 16-Bit (65,536 Steps) Grayscale Control with E nhanced Spectrum (ES) PWM • 7-Bit (12 8 Steps) Global Brightness Control for All Channels with Sink Current • LED Power-Supply Voltage up to 17 V • VCC = 3.0 V to 5.5 V • Constant Current Accuracy: – Channel-to-Channel = ±1. 5% – Device-to-Device = ±3% • CMOS Level I/O • 30-MHz Data Transfer Rat e • 33-MHz Grayscale Control Clock Auto Display Repeat • Auto Data Ref resh • Continuous Base LED Open Detec tion (LOD): – Detect LED opening and LED short to GND during display • The rmal Shutdown (TSD): – Automatic shut down at high temperature conditions – Restart under normal temperature VLED VLED ¼ • Readable Error Informat ion: – LED Open Detection (LOD) – Thermal Error Flag (TEF) • Noise Reduction: – 4-channel grouped delay to p.

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TLC5943 datasheet
TLC5943
www.ti.com
16-Channel, 16-Bit PWM LED Driver with
7-Bit Global Brightness Control
SBVS101 – DECEMBER 2007
FEATURES
1
23 16 Channels, Constant Current Sink Output
50-mA Capability (Constant Current Sink)
16-Bit (65,536 Steps) Grayscale Control with
Enhanced Spectrum (ES) PWM
7-Bit (128 Steps) Global Brightness Control for
All Channels with Sink Current
LED Power-Supply Voltage up to 17 V
VCC = 3.0 V to 5.5 V
Constant Current Accuracy:
– Channel-to-Channel = ±1.5%
– Device-to-Device = ±3%
CMOS Level I/O
30-MHz Data Transfer Rate
33-MHz Grayscale Control Clock
Auto Display Repeat
Auto Data Refresh
Continuous Base LED Open Detection (LOD):
– Detect LED opening and LED short to GND
during display
Thermal Shutdown (TSD):
– Automatic shutdown at high temperature
conditions
– Restart under normal temperature
VLED
VLED
¼
Readable Error Information:
– LED Open Detection (LOD)
– Thermal Error Flag (TEF)
Noise Reduction:
– 4-channel grouped delay to prevent inrush
current
Operating Temperature: –40°C to +85°C
APPLICATIONS
Monochrome, Multicolor, Full-Color LED
Displays
LED Signboards
Display Backlighting
DESCRIPTION
The TLC5943 is a 16-channel, constant current sink
driver. Each channel is individually adjustable with
65,536 enhanced spectrum pulse-width modulated
(PWM) steps controlled by grayscale (GS) data. All
output drivers are adjustable with 128 constant sink
current steps at same value controlled by brightness
control (BC) data. Both GS data and BC data are
writable via a serial interface port. The maximum
current value of all 16 channels can be set by a
single external resistor.
VLED
VLED
¼¼
Controller
DATA
SCLK
BCSEL
XLAT
BLANK
GSCLK
FLAGS
READ
XERR
READ
RIREF
¼¼
¼OUT0
OUT15
SIN SOUT
SCLK
XERR
BCSEL
XLAT
VCC VCC
BLANK
VCC
GSCLK
IREF
XTEST
TLC5943
IC1 GND
5
RIREF
¼
¼OUT0
OUT15
SIN SOUT
SCLK
XERR
BCSEL
XLAT
VCC
BLANK
GSCLK
IREF
TLC5943
ICn
VCC
XTEST
GND
XTEST pin must be connected to VCC or GND.
Typical Application Circuit (Multiple Daisy-Chained TLC5943s)
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.
PowerPAD is a trademark of Texas Instruments, Inc.
2
All other trademarks are the property of their respective owners.
3
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 © 2007, Texas Instruments Incorporated

TLC5943 datasheet
TLC5943
SBVS101 – DECEMBER 2007
www.ti.com
DESCRIPTION, CONTINUED
The TLC5943 has two error detection circuits for LED open detection (LOD) and a thermal error flag (TEF). LOD
detects a broken or disconnected LED and shorted LED to GND during the display period. TEF indicates an
over-temperature condition; when a TEF is set, all output drivers are turned off. When the TEF is cleared, all
output drivers are restarted.
blank
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PACKAGE/ORDERING INFORMATION(1)
PRODUCT
TLC5943
TLC5943
PACKAGE-LEAD
HTSSOP-28 PowerPAD™
5 mm × 5 mm QFN-32
ORDERING NUMBER
TLC5943PWPR
TLC5943PWP
TLC5943RHBR
TLC5943RHBT
TRANSPORT MEDIA,
QUANTITY
Tape and Reel, 2000
Tube, 50
Tape and Reel, 3000
Tape and Reel, 250
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
ABSOLUTE MAXIMUM RATINGS(1)(2)
Over operating free-air temperature range, unless otherwise noted.
VCC
IOUT
VIN
VOUT
TJ(max)
TSTG
PARAMETER
Supply voltage, VCC
Output current (dc): OUT0 to OUT15
Input voltage range:
SIN, SCLK, XLAT, BLANK, GSCLK, BCSEL, IREF
Output voltage range
SOUT, XERR
OUT0 to OUT15
Maximum operating junction temperature
Storage temperature range
ESD rating
Human body model (HBM)
Charged device model (CDM)
TLC5943
–0.3 to +6.0
60
–0.3 to VCC + 0.3
–0.3 to VCC + 0.3
–0.3 to +18
+150
–55 to +150
2
500
UNIT
V
mA
V
V
V
°C
°C
kV
V
(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those specified is not supported.
(2) All voltage values are with respect to network ground terminal.
2 Submit Documentation Feedback
Product Folder Link(s): TLC5943
Copyright © 2007, Texas Instruments Incorporated




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