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Texas Instruments
Texas Instruments

TLC5929 Datasheet

Constant-Current LED Driver


TLC5929 Datasheet Preview


TLC5929
www.ti.com
SBVS159 APRIL 2011
16-Channel, Constant-Current LED Driver with 7-Bit Global Brightness Control,
Power-Save Mode, and Full Self-Diagnosis for LED Lamp
Check for Samples: TLC5929
FEATURES
1
www.Da23taSh1ee6t4UC.noent stant-Current Sink Output Channels
with On/Off Control
Current Capability:
40 mA (VCC 3.6 V)
50 mA (VCC > 3.6 V)
Global Brightness Control: 7-Bit (128 Steps)
Power-Supply Voltage Range: 3.0 V to 5.5 V
LED Power-Supply Voltage: Up to 10 V
Constant-Current Accuracy:
Channel-to-Channel = ±1% (typ)
Device-to-Device = ±2% (typ)
Data Transfer Rate: 33 MHz
BLANK Pulse Width: 40 ns (min)
LED Open Detection (LOD)/LED Short
Detection (LSD) with Invisible Detection Mode
(IDM)
Output Leakage Detection (OLD) Detects 3 µA
Leak
Pre-Thermal Warning (PTW)
Thermal Shutdown (TSD)
Current Reference Terminal Short Flag (ISF)
Power-Save Mode with 10-µA Consumption
Undervoltage Lockout Sets the Default Data
2-ns Delayed Switching Between Each
Channel Minimizes Inrush Current
Operating Temperature: 40°C to +85°C
APPLICATIONS
Variable Message Signs (VMS)
Illumination
LED Video Displays
DESCRIPTION
The TLC5929 is a 16-channel constant current sink
LED driver. Each channel can be turned on or off by
writing data to an internal register. The constant
current value of all 16 channels is set by a single
external resistor with 128 steps for the global
brightness control (BC).
The TLC5929 has six error flags: LED open detection
(LOD), LED short detection (LSD), output leakage
detection (OLD), reference current terminal short
detection (ISF), pre-thermal warning (PTW) and
thermal error flag (TEF). In addition, the LOD and
LSD functions have invisible detection mode (IDM)
that can detect those errors even when the output is
off. The error detection results can be read via a
serial interface port.
The TLC5929 also has a power-save mode that sets
the total current consumption to 10 µA (typ) when all
outputs are off.
Typical Application Circuit (Multiple Daisy-Chained TLC5929s)
VLED
¼¼
¼
DATA
SCLK
LAT
BLANK
Controller
RIREF
SID Read
¼¼
¼OUT0
OUT15
SIN
SCLK
TLC5929
LAT IC1
BLANK
SOUT
VCC
VCC
IREF
GND
RIREF
3
¼
¼OUT0
OUT15
SIN
SCLK
LAT
TLC5929
ICn
BLANK
SOUT
VCC
VCC
IREF
GND
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.
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 © 2011, Texas Instruments Incorporated
Page 1

TLC5929
SBVS159 APRIL 2011
www.ti.com
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.
PRODUCT
TLC5929
PACKAGE/ORDERING INFORMATION(1)
PACKAGE-LEAD
PACKAGE
DESIGNATOR
ORDERING
NUMBER
SSOP/QSOP-24
DBQ
TLC5929DBQR
TLC5929DBQ
HTSSOP-24 PowerPAD
PWP
TLC5929PWPR
TLC5929PWP
TRANSPORT MEDIA,
QUANTITY
Tape and Reel, 2500
Tube, 50
Tape and Reel, 2000
Tube, 60
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or visit the
device product folder at www.ti.com.
ABSOLUTE MAXIMUM RATINGS
over operating free-air temperature range (unless otherwise noted)(1)
Voltage (2)
Current
Temperature
Electrostatic Discharge Ratings
VCC
SIN, SCLK, LAT, BLANK, IREF, SOUT
OUT0 to OUT15
OUT0 to OUT15
Operating junction, TJ (max)
Storage, TSTG
Human body model (HBM)
Charged device model (CDM)
VALUE
MIN MAX
0.3 +6.0
0.3 VCC + 0.3
0.3 +11
0 +65
40 +150
55 +150
4000
2000
UNIT
V
V
V
mA
°C
°C
V
V
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating
Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods my affect device reliability.
(2) All voltages are with respect to device ground terminal.
THERMAL INFORMATION
θJA
θJCtop
θJB
ψJT
ψJB
θJCbot
THERMAL METRIC(1)
Junction-to-ambient thermal resistance
Junction-to-case (top) thermal resistance
Junction-to-board thermal resistance
Junction-to-top characterization parameter
Junction-to-board characterization parameter
Junction-to-case (bottom) thermal resistance
TLC5929
DBQ
PWP
24 PINS
24 PINS
85.3 37.6
48.8 24.5
38.6 11.5
11.9 0.5
38.3 11.3
N/A 5.7
UNITS
°C/W
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
2 Submit Documentation Feedback
Product Folder Link(s): TLC5929
Copyright © 2011, Texas Instruments Incorporated
Page 2

TLC5929
www.ti.com
RECOMMENDED OPERATING CONDITIONS
At TA= 40°C to +85°C, unless otherwise noted.
PARAMETER
DC Characteristics: VCC = 3 V to 5.5 V
VCC Supply voltage
VO Voltage applied to output
VIH High-level input voltage
VIL Low-level input voltage
IOH High-level output current
IOL Low-level output current
IOLC Constant output sink current
TA Operating free-air temperature range
TJ Operating junction temperature range
AC Characteristics: VCC = 3 V to 5.5 V
fCLK (SCLK)
Data shift clock frequency
tWH0
tWL0
tWH1
tWH2
Pulse duration
(see Figure 4 and Figure 6)
tWL2
tSU0 Setup time
tSU1 (see Figure 4 and Figure 6)
tH0 Hold time
tH1 (see Figure 4 and Figure 6)
TEST CONDITIONS
OUT0 to OUT15
SIN, SCLK, LAT, BLANK
SIN, SCLK, LAT, BLANK
SOUT
SOUT
OUT0 to OUT15,
3 V VCC < 3.6 V
OUT0 to OUT15,
3.6 V VCC < 5.5 V
SCLK
SCLK
SCLK
LAT
BLANK
BLANK
SIN to SCLK
LATto SCLK
SIN to SCLK
LATto SCLK
SBVS159 APRIL 2011
TLC5929
MIN NOM
MAX UNIT
3.0
0.7 × VCC
GND
40
40
3.3 5.5
10
VCC
0.3 × VCC
2
2
40
50
+85
+125
V
V
V
V
mA
mA
mA
mA
°C
°C
33 MHz
10 ns
10 ns
20 ns
40 ns
40 ns
5 ns
200 ns
3 ns
10 ns
Copyright © 2011, Texas Instruments Incorporated
Product Folder Link(s): TLC5929
Submit Documentation Feedback
3
Page 3
Part Number TLC5929
Manufactur Texas Instruments
Description Constant-Current LED Driver
Total Page 30 Pages
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