{"id":3656,"date":"2026-06-07T13:03:32","date_gmt":"2026-06-07T13:03:32","guid":{"rendered":"https:\/\/materialparts.com\/lm48511sq\/"},"modified":"2026-06-07T13:03:32","modified_gmt":"2026-06-07T13:03:32","slug":"lm48511sq","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/lm48511sq\/","title":{"rendered":"LM48511SQ"},"content":{"rendered":"

Productos<\/h2>\n

The LM48511SQ from Texas Instruments is a mono 2.6W filterless Class D audio power amplifier with integrated boost converter in a 16-pin WQFN package. The internal boost converter generates the supply voltage from a 2.7V-5.5V input, enabling 2.6W output into 4 Ohm speaker from a single Li-ion cell.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
Topology<\/td>\nClass D with Integrated Boost<\/td>\n<\/tr>\n
Output Power<\/td>\n2.6W into 4 Ohm @ 10% THD<\/td>\n<\/tr>\n
Input Voltage<\/td>\n2.7V to 5.5V<\/td>\n<\/tr>\n
Boost Output<\/td>\n5.5V (internal)<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 87% (Class D)<\/td>\n<\/tr>\n
THD+N<\/td>\n0.05% @ 1W, 1kHz<\/td>\n<\/tr>\n
PSRR<\/td>\n72 dB @ 217Hz<\/td>\n<\/tr>\n
SNR<\/td>\n95 dB<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n
Paquete<\/td>\nWQFN-16 (3 x 3 mm)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 2.6W into 4 Ohm from single Li-ion cell<\/li>\n
  • Integrated 5.5V boost converter<\/li>\n
  • Filterless Class D output (no LC filter needed)<\/li>\n
  • 87% power efficiency<\/li>\n
  • 72dB PSRR at 217Hz<\/li>\n
  • 95dB SNR<\/li>\n
  • 0.05% THD+N at 1W<\/li>\n
  • Shutdown mode with 0.01uA current<\/li>\n
  • Pop-and-click suppression<\/li>\n
  • Short-circuit and thermal protection<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Portable speakers<\/li>\n
    • Mobile phones and tablets<\/li>\n
    • Laptop audio<\/li>\n
    • Portable gaming devices<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM48511SQ from Texas Instruments is a mono 2.6W filterless Class D audio power amplifier with integrated boost converter in a 16-pin WQFN package. The internal boost converter generates the supply voltage from a 2.7V-5.5V input, enabling 2.6W output into 4 Ohm speaker from a single Li-ion cell. Key Specifications Topology Class D […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,20],"tags":[],"chip_brand":[138],"class_list":["post-3656","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-ti"],"acf":{"brief_explanation":"2.6W mono Class D audio amp w\/ boost, filterless, 2.7-5.5V, WQFN-16","date_code":"","package_case":"WQFN-16 (3.0 x 3.0 x 0.8 mm, exposed pad)","in_stock":1340,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm48511.pdf","price":"$1.85 @ 1ku","product_introduction":"The LM48511SQ from Texas Instruments is a mono 2.6W filterless Class D audio power amplifier with an integrated 5.5V boost converter in a 3x3mm WQFN-16 package. The integrated boost converter generates a 5.5V internal supply from a 2.7V-5.5V input, enabling 2.6W output into a 4 Ohm speaker from a single Li-ion battery. The filterless Class D topology eliminates the external LC output filter, reducing component count and board area. With 87% efficiency, 72dB PSRR, 95dB SNR, and comprehensive protection, it delivers high-quality audio in portable devices.","working_principle":"The LM48511 operates through four subsystems: (1) Boost Converter: An internal synchronous boost converter steps up the input voltage (2.7-5.5V) to a regulated 5.5V internal supply, providing the headroom needed for 2.6W output. The boost operates at 1.5MHz with internal compensation. (2) Class D Power Stage: A full-bridge Class D output stage switches at 300kHz, modulating the audio signal with PWM. The high switching frequency and integrated output filtering allow filterless operation with the speaker inductance serving as the reconstruction filter. (3) Audio Processing: Differential input architecture provides 72dB PSRR, rejecting supply noise from the boost converter. Pop-and-click suppression eliminates audible transients during power-up\/down. (4) Protection: Thermal shutdown, output short-circuit protection, and overcurrent protection ensure reliable operation.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Description<\/th><\/tr>
      1<\/td>IN+<\/td>Input<\/td>Non-inverting audio input<\/td><\/tr>
      2<\/td>IN-<\/td>Input<\/td>Inverting audio input<\/td><\/tr>
      3<\/td>SD<\/td>Input<\/td>Shutdown (active low)<\/td><\/tr>
      4<\/td>VDD<\/td>Power<\/td>Input supply (2.7-5.5V)<\/td><\/tr>
      5<\/td>SW<\/td>Power<\/td>Boost converter switch node<\/td><\/tr>
      6<\/td>PVDD<\/td>Power<\/td>Boost output \/ Class D supply<\/td><\/tr>
      7<\/td>OUT+<\/td>Output<\/td>Bridge output positive<\/td><\/tr>
      8<\/td>OUT-<\/td>Output<\/td>Bridge output negative<\/td><\/tr><\/table>","application_scenarios":"
      • Portable Bluetooth speaker delivering 2.6W from single Li-ion cell with integrated boost<\/li>
      • Mobile phone speaker amplifier with filterless Class D for compact PCB<\/li>
      • Laptop audio subsystem with 72dB PSRR rejecting digital supply noise<\/li>
      • Handheld gaming device audio with 87% efficiency for extended battery life<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Pout<\/th>Boost<\/th>Notes<\/th><\/tr>
        LM48512SQ<\/td>TI<\/td>2.6W<\/td>Yes<\/td>Similar, I2C volume<\/td><\/tr>
        MAX98390EWJ+<\/td>ADI<\/td>3.2W<\/td>Yes<\/td>Higher power, DSP<\/td><\/tr>
        TS3A227AE<\/td>TI<\/td>--<\/td>--<\/td>Audio jack detect<\/td><\/tr>
        TPA2016D2YZR<\/td>TI<\/td>2.8W<\/td>No<\/td>External supply needed<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3656","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=3656"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/3656\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=3656"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=3656"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=3656"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=3656"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}