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TLC5951RHAT Datasheet(PDF) 1 Page - Texas Instruments |
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TLC5951RHAT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 46 page ¼ ¼ VCC ¼ ¼ VLED ¼ GSSIN GSSCK GSLAT DCSIN DCSCK ¼ R IREF Controller 7 FLAGS READ XBLNK GSCKR GSCKG GCCKB ¼ GSSIN GSSCK GSLAT GSSOUT DCSOUT VCC GND TLC5951 IC1 OUTR0/G0/B0 OUTR7/G7/B7 DCSIN DCSCK XBLNK GSCKR GSCKG GSCKB IREF ¼ GSSIN GSSCK GSLAT GSSOUT DCSOUT VCC GND TLC5951 ICn OUTR0/G0/B0 OUTR7/G7/B7 DCSIN DCSCK XBLNK GSCKR GSCKG GSCKB IREF VCC R IREF TLC5951 www.ti.com SBVS127B – MARCH 2009 – REVISED DECEMBER 2009 24-Channel, 12-Bit PWM LED Driver with 7-Bit Dot Correction and 3-Group, 8-Bit Global Brightness Control Check for Samples: TLC5951 1 FEATURES • 33-MHz Grayscale Control Clock 23 • 24-Channel Constant-Current Sink Output • Continuous Base LED Open Detection (LOD) • Current Capability: 40 mA • Continuous Base LED Short Detection (LSD) • Selectable Grayscale (GS) Control with PWM: • Thermal Shutdown (TSD) with Auto Restart 12-Bit (4096 Step), 10-Bit (1024 Step), 8-Bit • Grouped Delay to Prevent Inrush Current (256 Step) • Operating Air Temperature: –40°C to +85°C • Three Independent Grayscale Clocks for Three • Packages: HTSSOP-38, QFN-40 Color Groups • Dot Correction (DC): 7-Bit (128 Step) APPLICATIONS • Global Brightness Control (BC) for Each Color • Full-Color LED Displays Group: 8-Bit (256 Step) • LED Signboards • Auto Display Repeat Function DESCRIPTION • Independent Data Port for GS and BC/DC Data • Communication Path Between Each Data Port The TLC5951 is a 24-channel, constant-current sink driver. Each channel has an individually-adjustable, • LED Power-Supply Voltage up to 15 V 4096-step, pulse width modulation (PWM) grayscale • VCC = 3.0 V to 5.5 V (GS) brightness control and 128 step constant-current • Constant-Current Accuracy: dot correction (DC). The dot correction adjusts brightness deviation between channels and other – Channel-to-Channel = ±1.5% LED drivers. The output channels are grouped into – Device-to-Device = ±3% three groups of eight channels. Each channel group • CMOS Logic Level I/O has a 256-step global brightness control (BC) function and an individual grayscale clock input. • Data Transfer Rate: 30 MHz Typical Application Circuit (Multiple Daisy-Chained TLC5951s) 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. 2 PowerPAD is a trademark of Texas Instruments, Incorporated. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2009, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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