{"id":5722,"date":"2026-06-11T04:13:25","date_gmt":"2026-06-11T04:13:25","guid":{"rendered":"https:\/\/materialparts.com\/tdf8546aj\/"},"modified":"2026-06-12T03:07:25","modified_gmt":"2026-06-12T03:07:25","slug":"tdf8546aj","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/tdf8546aj\/","title":{"rendered":"TDF8546AJ"},"content":{"rendered":"

\u0646\u0638\u0631\u0629 \u0639\u0627\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0645\u0646\u062a\u062c<\/h2>\n

The TDF8546AJ from NXP is a quad-channel 50W class-D audio amplifier with I2C diagnostic, 6-25V supply, and high efficiency in HSOP-32 for car audio systems.<\/p>\n

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\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nHSOP-32 (13×7.5mm)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • See datasheet for complete specifications<\/li>\n
  • Industry-standard package<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Industrial control<\/li>\n
    • Consumer electronics<\/li>\n
    • Communication equipment<\/li>\n
    • Power management<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TDF8546AJ from NXP is a quad-channel 50W class-D audio amplifier with I2C diagnostic, 6-25V supply, and high efficiency in HSOP-32 for car audio systems. Key Specifications Package HSOP-32 (13×7.5mm) Features See datasheet for complete specifications Industry-standard package Applications Industrial control Consumer electronics Communication equipment Power management<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,33],"tags":[],"chip_brand":[168],"class_list":["post-5722","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-led-driver-ics","chip_brand-nxp"],"acf":{"brief_explanation":"4-ch 50W class-D audio amplifier, 25V, HSOP-32","date_code":"","package_case":"HSOP-32 (13x7.5mm)","in_stock":8789,"datasheet":"https:\/\/www.nxp.com\/products\/audio\/","price":"$5.00 @ 1ku","product_introduction":"The TDF8546AJ from NXP is a quad-channel 50W class-D audio amplifier with I2C diagnostic, 6-25V supply, and high efficiency in HSOP-32 for car audio systems.","working_principle":"The TDF8546AJ is a 4-channel class-D audio power amplifier from NXP in HSOP-32, designed for automotive entertainment systems. It delivers 4 x 50W into 2-ohm speakers at 25V supply, or 4 x 25W into 4-ohm speakers at 14.4V. The Bridge-Tied-Load (BTL) output configuration doubles the voltage swing across the speaker: each channel uses two half-bridge outputs driven in anti-phase, so the speaker sees 2x the single-ended voltage swing. This provides 4x the output power compared to a single-ended output with the same supply voltage. The class-D architecture uses PWM (Pulse Width Modulation) at a fixed carrier frequency (typically 400kHz-500kHz), achieving approximately 85% efficiency versus 50% for class-AB at half power. The output filter (LC low-pass) removes the PWM carrier, recovering the audio signal. The I2C control interface allows individual channel volume control (-80dB to +30dB in 0.5dB steps), mute, standby, and diagnostic readback (over-temperature, short-circuit, open-load detection per channel). The device includes a clip detector that reduces gain to prevent output clipping. The diagnostic features report speaker faults via I2C, enabling the head unit to alert the driver. The HSOP-32 package has an exposed thermal pad that must be soldered to the PCB copper pour for heat dissipation.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>SDI<\/td>Input<\/td>I2C serial data input (from MCU I2C bus)<\/td><\/tr>
      2<\/td>BTL_OUT1<\/td>Output<\/td>Bridge-tied-load output 1 (connects to speaker 1+)<\/td><\/tr>
      3-4<\/td>PVCC\/GND<\/td>Power<\/td>Power supply (8-25V) and power ground<\/td><\/tr>
      5<\/td>BTL_OUT2<\/td>Output<\/td>Bridge-tied-load output 2 (connects to speaker 1-)<\/td><\/tr>
      6-8<\/td>BTL_OUT3\/BTL_OUT4<\/td>Output<\/td>BTL outputs for channels 2 (speaker 2+\/-)<\/td><\/tr>
      9-12<\/td>BTL_OUT5-8<\/td>Output<\/td>BTL outputs for channels 3 and 4 (speakers 3+\/- and 4+\/-)<\/td><\/tr>
      13-16<\/td>SDO\/ADDR\/STANDBY\/MUTE<\/td>Digital<\/td>I2C data out, address, standby, mute<\/td><\/tr><\/table>","application_scenarios":"
    • Industrial control<\/li>
    • Consumer electronics<\/li>
    • Communication equipment<\/li>
    • Power management<\/li>","alternative_models":"
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      NXP<\/td>TDF8546BTS2<\/td>HSOP-32<\/td>Same device, different package option<\/td><\/tr>
      NXP<\/td>TDF8548J<\/td>HSOP-32<\/td>8-channel version, same family<\/td><\/tr>
      Texas Instruments<\/td>TAS5414ATPHP<\/td>HTSSOP-28<\/td>4-ch 25W class-D, I2C<\/td><\/tr>
      Infineon<\/td>MA5308NS<\/td>LQFP-48<\/td>8-ch class-D, 40W, AEC-Q100<\/td><\/tr>
      STMicroelectronics<\/td>TDA7418<\/td>TQFP-44<\/td>6-ch audio processor + 4-ch amp<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5722","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=5722"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5722\/revisions"}],"predecessor-version":[{"id":6073,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/5722\/revisions\/6073"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=5722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=5722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=5722"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=5722"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}