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TLC5948APWPR.B Datasheet(PDF) 1 Page - Texas Instruments |
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TLC5948APWPR.B Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 54 page  ¼ SIN SCLK LAT GSCLK SOUT GND VCC Device 1 VCC ¼ ¼ ¼ SIN SCLK LAT GSCLK R IREF IREF SOUT Device n OUT0 OUT15 DATA SCLK GSCLK ¼ R IREF IREF Controller GND VCC VCC 3 LAT ¼ ¼ OUT0 OUT15 ¼ DataRead VLED TLC5948A www.ti.com SBVS192A – MARCH 2012 – REVISED DECEMBER 2012 16-Channel, 16-Bit, ES-PWM, Full Self-Diagnosis LED Driver for 7-Bit DC and 7-Bit Global BC LED Lamp Check for Samples: TLC5948A 1 FEATURES 23 • 16 Constant-Current Sink Output Channels • Current Reference Terminal Short Flag (ISF) • Sink Current Capability with Maximum DC and • Thermal Shutdown (TSD) and Error Flag (TEF) BC Data: • Pre-Thermal Warning (PTW) – 2 mA to 45 mA (VCC ≤ 3.6 V) • Four-Channel Grouped Delay Switching to – 2 mA to 60 mA (VCC > 3.6 V) Prevent Inrush Current • Dot Correction (DC): • Operating Temperature: –40°C to +85°C – 7-Bit (128 Steps) with 0% to 100% Range APPLICATIONS • Global Brightness Control (BC): • LED Video Displays – 7-Bit (128 Steps) with 25% to 100% Range • LED Signboards • Grayscale Control (GS) with Enhanced Spectrum or Conventional PWM: DESCRIPTION – 16-Bit (65,536 Steps) The TLC5948A is a 16-channel, constant-current sink • LED Power-Supply Voltage: Up to 10 V LED driver. Each channel has an individually- • VCC: 3.0 V to 5.5 V adjustable, pulse width modulation (PWM) grayscale (GS) brightness control with 65,536 steps and 128 • Constant-Current Accuracy: steps of constant-current dot correction (DC). DC – Channel-to-Channel: ±0.6% (typ), ±2% (max) adjusts brightness deviation between channels. All – Device-to-Device: ±1% (typ), ±4% (max) channels have a 128-step global brightness control (BC). BC adjusts brightness deviation with other LED • Data Transfer Rate: 33 MHz drivers. GS, DC, and BC data are accessible with a • Grayscale Control Clock: 33 MHz serial interface port. • Auto Display Repeat and Auto Data Refresh The TLC5948A has six error flags: LED open • Display Timing Reset detection (LOD), LED short detection (LSD), output • Power-Save Mode to Minimize VCC Current leakage detection (OLD), reference current terminal short flag detection (ISF), pre-thermal warning (PTW), • LOD and LSD with Invisible Detection and thermal error flag (TEF). The error detection Mode (IDM) results can be read with a serial interface port. • Output Leakage Detection (OLD) Typical Application Circuit (Multiple Daisy-Chained TLC5948As) 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. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2012, 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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