{"id":10717,"date":"2026-07-20T10:42:02","date_gmt":"2026-07-20T10:42:02","guid":{"rendered":"https:\/\/ic-vendor.com\/tlc5946rhbr\/"},"modified":"2026-07-20T10:42:02","modified_gmt":"2026-07-20T10:42:02","slug":"tlc5946rhbr","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/tlc5946rhbr\/","title":{"rendered":"TLC5946RHBR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The TLC5946RHBR is a 16-channel, 12-bit PWM LED driver from Texas Instruments with 6-bit dot correction. Packaged in a 32-pin VQFN (RHB), it provides 40 mA per channel constant current sink output with individual 4096-step PWM grayscale control and 64-step dot correction for brightness uniformity. The device supports LED supply voltage up to 17 V and operates from 3.0 V to 5.5 V logic supply.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u901a\u9053\u6570<\/td>\n16<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n40 mA per channel (constant current sink)<\/td>\n<\/tr>\n
PWM Resolution<\/td>\n12-bit (4096 steps)<\/td>\n<\/tr>\n
Dot Correction<\/td>\n6-bit (64 steps)<\/td>\n<\/tr>\n
LED Supply Voltage<\/td>\nUp to 17 V<\/td>\n<\/tr>\n
Logic Supply<\/td>\n3.0 V to 5.5 V<\/td>\n<\/tr>\n
Data Transfer Rate<\/td>\n30 MHz<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n32-VQFN (RHB) \u2014 5.0 x 5.0 mm<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +85\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 16-channel constant current sink with 40 mA per channel<\/li>\n
  • 12-bit PWM grayscale control (4096 steps) per channel<\/li>\n
  • 6-bit dot correction (64 steps) for brightness matching<\/li>\n
  • LED open detection (LOD) and thermal error flag (TEF)<\/li>\n
  • 30 MHz serial data transfer rate for cascaded operation<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Monochrome, multicolor, and full-color LED displays<\/li>\n
    • LED signboards and video walls<\/li>\n
    • Display backlighting systems<\/li>\n
    • Decorative and architectural LED lighting<\/li>\n
    • Industrial status indicator arrays<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TLC5946RHBR is a 16-channel, 12-bit PWM LED driver from Texas Instruments with 6-bit dot correction. Packaged in a 32-pin VQFN (RHB), it provides 40 mA per channel constant current sink output with individual 4096-step PWM grayscale control and 64-step dot correction for brightness uniformity. The device supports LED supply voltage up to […]<\/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":[13,33],"tags":[2057],"chip_brand":[138],"class_list":["post-10717","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-led-driver-ics","tag-tlc5946rhbr","chip_brand-ti"],"acf":{"brief_explanation":"16-ch LED driver, 12-bit PWM, 6-bit dot correction, 40 mA\/ch, 32-VQFN","date_code":"","package_case":"32-VQFN (RHB) \u2014 5.0 x 5.0 mm","in_stock":13234,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tlc5946.pdf","price":"$1.06 @ 1ku","product_introduction":"The TLC5946 is a 16-channel constant current sink LED driver from Texas Instruments. Each channel is individually adjustable with 4096 pulse-width modulated (PWM) steps and 64 constant current sink steps for dot correction. The dot correction adjusts brightness variations between LEDs, ensuring uniform display appearance. Both grayscale and dot correction data are accessible via a serial interface. The maximum current for all 16 channels is set by a single external resistor. The device includes LED open detection (LOD) and a thermal error flag (TEF) for fault monitoring.","working_principle":"The TLC5946 operates as a shift-register-based LED driver with two data paths: grayscale (GS) data for PWM control and dot correction (DC) data for per-channel current adjustment. Serial data is clocked in through SIN at up to 30 MHz, and latched by the XLAT signal. The PWM controller uses the GSCLK signal to step through the 4096 grayscale levels. When the GS counter matches a channel's GS data, that channel turns off. The dot correction data scales the constant current for each channel, compensating for LED brightness variations. The constant current value is set by an external resistor on the IREF pin. LOD monitors each output for open-circuit conditions, and TEF indicates over-temperature.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>OUT0<\/td>Output<\/td>Channel 0 constant current output<\/td><\/tr>
      2<\/td>OUT1<\/td>Output<\/td>Channel 1 constant current output<\/td><\/tr>
      3<\/td>OUT2<\/td>Output<\/td>Channel 2 constant current output<\/td><\/tr>
      4<\/td>OUT3<\/td>Output<\/td>Channel 3 constant current output<\/td><\/tr>
      5<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      6<\/td>IREF<\/td>I\/O<\/td>External reference resistor for current set<\/td><\/tr>
      7<\/td>BLANK<\/td>Input<\/td>Blanking control (high = all outputs off)<\/td><\/tr>
      8<\/td>GSCLK<\/td>Input<\/td>Grayscale PWM clock<\/td><\/tr>
      9<\/td>SCLK<\/td>Input<\/td>Serial data clock<\/td><\/tr>
      10<\/td>SIN<\/td>Input<\/td>Serial data input<\/td><\/tr>
      11<\/td>SOUT<\/td>Output<\/td>Serial data output (cascade)<\/td><\/tr>
      12<\/td>XLAT<\/td>Input<\/td>Latch data transfer<\/td><\/tr>
      13<\/td>XERR<\/td>Output<\/td>Error flag output (open drain)<\/td><\/tr>
      14<\/td>VCC<\/td>Power<\/td>Logic supply (3.0\u20135.5 V)<\/td><\/tr><\/table>","application_scenarios":"
      • Full-color RGB LED video wall panels<\/li>
      • LED signboards and scoreboard displays<\/li>
      • LCD backlighting with local dimming<\/li>
      • Architectural and decorative LED installations<\/li>
      • Industrial machine status LED arrays<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TLC5940NT<\/td>28-DIP<\/td>16-ch, 12-bit PWM, through-hole<\/td><\/tr>
        TI<\/td>TLC5947DAP<\/td>28-HTSSOP<\/td>24-ch, 12-bit PWM<\/td><\/tr>
        Maxim<\/td>MAX6969ATI+T<\/td>28-TSSOP<\/td>16-ch, 8-bit PWM LED driver<\/td><\/tr>
        NXP<\/td>PCA9635PW<\/td>28-TSSOP<\/td>16-ch I2C LED driver<\/td><\/tr>
        Allegro<\/td>A6282ELPTR-T<\/td>16-QFN<\/td>3-ch LED driver with dot correction<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10717","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=10717"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10717\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10717"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}