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SIN

SCLK

LAT

BLANK

SOUT

GND

VCC

TLC59281

IC1

OUT0 OUT15

VCC

¼ ¼

VLED VLED

SIN

SCLK

LAT

BLANK

IREF

SOUT

ICn

OUT0 OUT15

DATA

SCLK

BLANK

ERROR

READ

VLED VLED

IREF

Controller

GND

VCC

LAT

TLC59281

www.ti.com

SBVS139 –JANUARY 2010

16-Channel, Constant-Current LED Driver

Check for Samples: TLC59281

FEATURES

APPLICATIONS

• LED Video Displays

• 16 Channels, Constant-Current Sink Output

with On/Off Control

• Message Boards

• Illumination

• 35-mA Capability (Constant-Current Sink)

• 10-ns High-Speed Constant-Current Switching

DESCRIPTION

Transient Time

The TLC59281 is a 16-channel, constant-current sink

• Low On-Time Error

LED driver. Each channel can be turned on/off by

• LED Power-Supply Voltage up to 17 V

writing serial data to an internal register. The

• V

= 3.0 V to 5.5 V

constant-current value of all 16 channels is set by a

• Constant-Current Accuracy:

single external resistor.

– Channel-to-Channel = ±1%

– Device-to-Device = ±1%

• CMOS Logic Level I/O

• 35-MHz Data Transfer Rate

• 20-ns BLANK Pulse Width

• Operating Temperature: –40°C to +85°C

Typical Application Circuit (Multiple Daisy-Chained TLC59281s)

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.

2All 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.

TLC59281

SBVS139 –JANUARY 2010

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.

PACKAGE/ORDERING INFORMATION

(1)

PRODUCT PACKAGE-LEAD ORDERING NUMBER TRANSPORT MEDIA, QUANTITY

TLC59281DBQR Tape and Reel, 2500

TLC59281 SO-24

TLC59281DBQ Tube, 50

TLC59281RGER Tape and Reel, 3000

TLC59281 QFN-24

TLC59281RGE 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.

PARAMETER TLC59281 UNIT

Supply voltage: V

–0.3 to +6.0 V

OUT

Output current (dc) OUT0 to OUT15 40 mA

Input voltage range SIN, SCLK, LAT, BLANK, IREF –0.3 to V

+ 0.3 V

SOUT –0.3 to V

+ 0.3 V

OUT

Output voltage range

OUT0 to OUT15 –0.3 to +18 V

J(MAX)

Operating junction temperature +150 °C

STG

Storage temperature range –55 to +150 °C

Human body model (HBM) 2 kV

ESD rating

Charged device model (CDM) 500 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.

DISSIPATION RATINGS

OPERATING FACTOR T

< +25°C T

= +70°C T

= +85°C

PACKAGE ABOVE T

= +25°C POWER RATING POWER RATING POWER RATING

SO-24 14.3 mW/°C 1782 mW 1140 mW 927 mW

QFN-24

(1)

24.8 mW/°C 3106 mW 1988 mW 1615 mW

(1) The package thermal impedance is calculated in accordance with JESD51-5.

Product Folder Link(s): TLC59281

D (%)=

- 1

OUTn

(I +I +...+I +I )

OUT0 OUT1 OUT15OUT14

´ 100

D (%)=

IdealOutputCurrent

- (IdealOutputCurrent)

(I +I +...I +I )

OUT0 OUT1 OUT14 OUT15

´ 100

I =42 ´

OUT(IDEAL)

1.20

IREF

100

(I atV =3.0V)

OUTn CC

(I atV =5.5V) (I atV =3.0V)

OUTn CC OUTn CC

5.5V 3V-

D (%/V)=

100

3V 1V-

(I atV =1V)

OUTn OUTn

(I atV =3V) (I atV =1V)-

OUTn OUTn OUTn OUTn

D (%/V)=

TLC59281

SBVS139 –JANUARY 2010

www.ti.com

ELECTRICAL CHARACTERISTICS

At V

= 3.0 V to 5.5 V and T

= –40°C to +85°C. Typical values at V

= 3.3 V and T

= +25°C, unless otherwise noted.

TLC59281

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

High-level output voltage I

= –1 mA at SOUT V

– 0.4 V

Low-level output voltage I

= 1 mA at SOUT 0 0.4 V

Input current V

= V

or GND at SIN, SCLK, LAT, and BLANK –1 1 μA

SIN/SCLK/LAT = low, BLANK = high, V

OUTn

= 1 V,

CC1

1 2 mA

IREF

= 27 kΩ

SIN/SCLK/LAT = low, BLANK = high, V

OUTn

= 1 V,

CC2

4.5 8 mA

IREF

= 3 kΩ

Supply current (V

)

SIN/SCLK/LAT/BLANK = low, V

OUTn

= 1 V,

CC3

7 18 mA

IREF

= 3 kΩ

SIN/SCLK/LAT/BLANK = low, V

OUTn

= 1 V,

CC4

16 40 mA

IREF

= 1.5 kΩ

All OUTn = ON, V

OUTn

= V

OUTfix

= 1 V, R

IREF

= 1.5 kΩ

OLC

Constant output current 31 34 37 mA

(see Figure 6), at OUT0 to OUT15

All OUTn for constant-current driver, all outputs off

OLKG

Output leakage current BLANK = high, V

OUTn

= V

OUTfix

= 17 V, R

IREF

= 1.5 kΩ 0.1 μA

(see Figure 6), at OUT0 to OUT15

Constant-current error All OUTn = ON, V

OUTn

= V

OUTfix

= 1 V, R

IREF

= 1.5 kΩ

ΔI

OLC

±1 ±3 %

(channel-to-channel)

(1)

at OUT0 to OUT15

Constant-current error All OUTn = ON, V

OUTn

= V

OUTfix

= 1 V, R

IREF

= 1.5 kΩ

ΔI

OLC1

±1 ±6 %

(device-to-device)

(2)

at OUT0 to OUT15

All OUTn = ON, V

OUTn

= V

OUTfix

= 1 V, R

IREF

= 1.5 kΩ

ΔI

OLC2

Line regulation

(3)

±0.5 ±1 %/V

at OUT0 to OUT15

All OUTn = ON, V

OUTn

= 1 V to 3V, V

OUTfix

= 1 V,

ΔI

OLC3

Load regulation

(4)

±1 ±3 %/V

IREF

= 1.5 kΩ, at OUT0 to OUT15

IREF

Reference voltage output R

IREF

= 1.5 kΩ 1.16 1.20 1.24 V

(1) The deviation of each output from the average of OUT0–OUT15 constant-current. Deviation is calculated by the formula:

(2) The deviation of the OUT0–OUT15 constant-current average from the ideal constant-current value.

Deviation is calculated by the following formula:

Ideal current is calculated by the formula:

(3) Line regulation is calculated by this equation:

(4) Load regulation is calculated by the equation:

Product Folder Link(s): TLC59281

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