TLC5940-EP Datasheet, PDF (1/33 Pages) Texas Instruments – 16-CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL

TLC5940-EP
www.ti.com
SLVSA51D – MARCH 2010 – REVISED MAY 2010
16-CHANNEL LED DRIVER WITH DOT CORRECTION AND GRAYSCALE PWM CONTROL
Check for Samples: TLC5940-EP
FEATURES
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•2 16 Channels
• 12-Bit (4096 Steps) Grayscale PWM Control
• Dot Correction
– 6 Bit (64 Steps)
– Storable in Integrated EEPROM
• Drive Capability (Constant-Current Sink) of
0 mA to 72 mA (–40°C to 125°C)
– 0 mA to 60 mA (V_CC < 3.6 V, –40°C to 85°C)
– 0 mA to 120 mA (V_CC > 3.6 V, –40°C to 85°C)
• LED Power Supply Voltage up to 17 V
• V_CC = 3 V to 5.5 V
• Serial Data Interface
• Controlled In-Rush Current
• 30-MHz Data Transfer Rate
• CMOS Level I/O
• Error Information
– LOD: LED Open Detection
– TEF: Thermal Error Flag
APPLICATIONS
• Monocolor, Multicolor, Full-Color LED Displays
• LED Signboards
• Display Backlighting
• General, High-Current LED Drive
SUPPORTS DEFENSE, AEROSPACE,
AND MEDICAL APPLICATIONS
• Controlled Baseline
• One Assembly/Test Site
• One Fabrication Site
• Available in Q-Temp (–40°C/125°C)
• Extended Product Life Cycle
• Extended Product-Change Notification
• Product Traceability
DESCRIPTION
The TLC5940 is a 16-channel, constant-current sink LED driver. Each channel has an individually adjustable
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. The dot correction
data is stored in an integrated EEPROM. 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 TLC5940 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 condition.
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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.
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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 © 2010, Texas Instruments Incorporated