Product category:
Power Supply ICs and Controllers
News Release from: Texas Instruments (April 2001-March 2006) | Subject: TLC5940 and TLC5923
Edited by the Electronicstalk Editorial
Team on 24 March 2005
LED drives take on large display duties
Texas Instruments has released two 16-channel, constant-current sink LED drivers for large form-factor colour displays.
Supporting complex power requirements needed for light emitting diodes (LEDs) in large display electronics, Texas Instruments has released two 16-channel, constant-current sink LED drivers for large form-factor colour displays The drivers give designers increased system reliability and dynamic brightness control to enhance the resolution and power efficiency of stadium scoreboards, advertising displays and video display panels
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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The TLC5940 features industry-leading, channel-to-channel and chip-to-chip accuracy, improving overall display quality.
Each channel on the integrated circuit (IC) has an individually adjustable 4096-step grey-scale pulsewidth modulation (PWM) brightness control and a 64-step dot correction that allows the display to select from up to 68.7 billion colours to enhance colour resolution.
Dot correction on the device compensates for the brightness variations between individual LEDs in the system.
In addition to the TLC5940, TI offers a more cost-sensitive TLC5923 driver without grayscale PWM functionality.
The flexible power management IC features 128 steps of dot correction and an on/off state function.
The TLC5940 and TLC5923 are available today in volume from TI and its authorised distributors.
The TLC5940 is available in a 28-pin HTSSOP, PDIP or small QFN package, and the TLC5923 comes in a 32-pin HTSSOP package.
Suggested resale pricing in quantities of 1000 is $2.90 for the TLC5940 and $1.90 for the TLC5923.
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