{"id":6400,"date":"2026-06-16T02:45:49","date_gmt":"2026-06-16T02:45:49","guid":{"rendered":"https:\/\/materialparts.com\/tlc5940nt\/"},"modified":"2026-06-16T02:45:49","modified_gmt":"2026-06-16T02:45:49","slug":"tlc5940nt","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/tlc5940nt\/","title":{"rendered":"TLC5940NT"},"content":{"rendered":"

Productos<\/h2>\n

The TLC5940NT from Texas Instruments is a 16-channel constant-current sink LED driver with 12-bit (4096-step) grayscale PWM brightness control and 6-bit (64-step) dot correction stored in integrated EEPROM. Each channel delivers up to 120mA (VCC > 3.6V) with LED supply voltage up to 17V. The NT suffix denotes the 28-pin PDIP package for through-hole applications.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
N\u00famero de canales<\/td>\n16<\/td>\n<\/tr>\n
Grayscale Resolution<\/td>\n12-bit (4096 steps)<\/td>\n<\/tr>\n
Dot Correction Resolution<\/td>\n6-bit (64 steps)<\/td>\n<\/tr>\n
Max Output Current<\/td>\n60mA (VCC < 3.6V), 120mA (VCC > 3.6V)<\/td>\n<\/tr>\n
LED Supply Voltage<\/td>\nUp to 17V<\/td>\n<\/tr>\n
VCC Supply<\/td>\n3V to 5.5V<\/td>\n<\/tr>\n
Data Transfer Rate<\/td>\n30MHz<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n1.24V (IREF pin)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nPDIP-28<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 16-channel constant-current sink driver<\/li>\n
  • 12-bit grayscale PWM per channel<\/li>\n
  • 6-bit dot correction with EEPROM storage<\/li>\n
  • Single external resistor sets max current<\/li>\n
  • LED open detection (LOD)<\/li>\n
  • Thermal error flag (TEF)<\/li>\n
  • Serial interface with 30MHz data rate<\/li>\n
  • Controlled in-rush current<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Monocolor, multicolor, and full-color LED displays<\/li>\n
    • LED signboards and video walls<\/li>\n
    • Display backlighting<\/li>\n
    • General high-current LED drive<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TLC5940NT from Texas Instruments is a 16-channel constant-current sink LED driver with 12-bit (4096-step) grayscale PWM brightness control and 6-bit (64-step) dot correction stored in integrated EEPROM. Each channel delivers up to 120mA (VCC > 3.6V) with LED supply voltage up to 17V. The NT suffix denotes the 28-pin PDIP package for […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,42],"tags":[],"chip_brand":[138],"class_list":["post-6400","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-sensors","chip_brand-ti"],"acf":{"brief_explanation":"16-CH LED driver, 12-bit PWM, 6-bit dot correction EEPROM, 120mA\/ch, PDIP-28","date_code":"","package_case":"PDIP-28 (35.69 x 6.73 mm)","in_stock":3200,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tlc5940.pdf","price":"$1.60 @ 1ku","product_introduction":"The TLC5940NT is a 16-channel constant-current sink LED driver from Texas Instruments in a 28-pin PDIP through-hole package. Each of the 16 output channels features individually adjustable 12-bit (4096-step) grayscale PWM brightness control and 6-bit (64-step) dot correction, with dot correction data stored in integrated EEPROM for power-up consistency. The maximum output current per channel is set by a single external resistor on the IREF pin, up to 60mA when VCC is below 3.6V or 120mA when above 3.6V. LED supply voltage can be up to 17V, enabling driving of multiple series-connected LEDs. Error detection includes LED open detection (LOD) and thermal error flag (TEF) for diagnostic monitoring.","working_principle":"The TLC5940NT operates as a serially programmed constant-current sink driver. Data is clocked in via the SIN pin at up to 30MHz on the SCLK rising edge, with XLAT latching data into internal registers. Grayscale (GS) data is 192 bits wide (16 channels x 12 bits), while dot correction (DC) data is 96 bits wide (16 channels x 6 bits). The VPRG pin selects between GS mode (VPRG = GND) and DC programming mode (VPRG = VCC). The GSCLK pin serves as the PWM clock; each GSCLK cycle decrements the grayscale counter, and the output turns off when the counter reaches zero. Dot correction scales the maximum current per channel according to IOUT = IMAX x DCn\/63, where IMAX = 31.5 x (1.24V \/ R_IREF). The BLANK pin forces all outputs off and resets GS counters. The XERR pin is an open-drain error flag indicating LOD or TEF conditions.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1-2<\/td>OUT0-OUT1<\/td>Output<\/td>Constant-current sink outputs for LED channels 0-1<\/td><\/tr>
      3<\/td>GND<\/td>Ground<\/td>Device ground<\/td><\/tr>
      4-6<\/td>OUT2-OUT4<\/td>Output<\/td>Constant-current sink outputs for LED channels 2-4<\/td><\/tr>
      7<\/td>VCC<\/td>Power<\/td>Logic supply voltage (3V to 5.5V)<\/td><\/tr>
      8-11<\/td>OUT5-OUT8<\/td>Output<\/td>Constant-current sink outputs for LED channels 5-8<\/td><\/tr>
      12<\/td>IREF<\/td>Analog<\/td>Current reference; connect resistor to GND to set max output current<\/td><\/tr>
      13<\/td>XERR<\/td>Output<\/td>Error flag output; open-drain, active low (LOD or TEF)<\/td><\/tr>
      14-17<\/td>OUT9-OUT12<\/td>Output<\/td>Constant-current sink outputs for LED channels 9-12<\/td><\/tr>
      18<\/td>SCLK<\/td>Input<\/td>Serial data clock input<\/td><\/tr>
      19<\/td>SIN<\/td>Input<\/td>Serial data input<\/td><\/tr>
      20<\/td>SOUT<\/td>Output<\/td>Serial data output for daisy-chaining<\/td><\/tr>
      21-23<\/td>OUT13-OUT15<\/td>Output<\/td>Constant-current sink outputs for LED channels 13-15<\/td><\/tr>
      24<\/td>XLAT<\/td>Input<\/td>Latch signal; rising edge transfers shift register to GS or DC register<\/td><\/tr>
      25<\/td>BLANK<\/td>Input<\/td>Blank input; HIGH forces all outputs off and resets GS counters<\/td><\/tr>
      26<\/td>GSCLK<\/td>Input<\/td>Grayscale clock; each rising edge decrements GS counter<\/td><\/tr>
      27<\/td>DCPRG<\/td>Input<\/td>Dot correction programming select; HIGH = DC register, LOW = EEPROM<\/td><\/tr>
      28<\/td>VPRG<\/td>Input<\/td>Mode select; GND = GS mode, VCC = DC input mode<\/td><\/tr><\/table>","application_scenarios":"
      • Full-Color LED Video Walls:<\/b> Drives RGB LED arrays with 12-bit per-channel PWM providing 16.7M color depth per pixel and dot correction ensuring uniform brightness across large display panels<\/li>
      • LED Signboards:<\/b> Controls monochrome or multi-color outdoor signage with 4096-step brightness per channel and EEPROM dot correction for consistent appearance across temperature variations<\/li>
      • Display Backlighting:<\/b> Provides precise PWM dimming for LCD backlight LED strings with dot correction compensating for LED binning variations<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>CH<\/th>GS Bits<\/th>Key Difference<\/th><\/tr>
        TLC5940PWP<\/td>TI<\/td>16<\/td>12<\/td>HTSSOP-28 surface mount package<\/td><\/tr>
        TLC5940RHB<\/td>TI<\/td>16<\/td>12<\/td>VQFN-32, smallest footprint<\/td><\/tr>
        TLC5947RHT<\/td>TI<\/td>24<\/td>12<\/td>24 channels, no EEPROM<\/td><\/tr>
        IS31FL3731-QFLS4-TR<\/td>Lumissil<\/td>16x9<\/td>8<\/td>Matrix driver, 144 LEDs, I2C<\/td><\/tr>
        MAX7219CNG<\/td>ADI<\/td>8<\/td>8<\/td>Simpler 8-segment driver, no dot correction<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6400","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=6400"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6400\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6400"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}