{"id":7182,"date":"2026-06-23T06:05:36","date_gmt":"2026-06-23T06:05:36","guid":{"rendered":"https:\/\/materialparts.com\/tda7388\/"},"modified":"2026-06-23T06:05:36","modified_gmt":"2026-06-23T06:05:36","slug":"tda7388","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/tda7388\/","title":{"rendered":"TDA7388"},"content":{"rendered":"

Productos<\/h2>\n

The TDA7388 from STMicroelectronics is a 4x41W class-AB audio power amplifier in a Flexiwatt-25 package. Designed for car radio applications, it provides four bridge-tied-load (BTL) output channels with diagnostic features and low standby current from a single 12V supply.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n
Output Power<\/td>\n4 x 41W (max at 14.4V, 4 Ohm)<\/td>\n<\/tr>\n
Tensi\u00f3n de alimentaci\u00f3n<\/td>\n8 V to 18 V<\/td>\n<\/tr>\n
Output Configuration<\/td>\n4 BTL channels (bridge-tied-load)<\/td>\n<\/tr>\n
THD<\/td>\n0.05% (typical at 1W, 1kHz)<\/td>\n<\/tr>\n
Standby Current<\/td>\n100 uA (max)<\/td>\n<\/tr>\n
Load Impedance<\/td>\n4 Ohm (minimum)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40C to +150C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • 4x41W output power at 14.4V into 4 Ohm BTL loads<\/li>\n
  • Class-AB operation with low 0.05% THD at 1W<\/li>\n
  • Bridge-tied-load output eliminates output coupling capacitors<\/li>\n
  • Built-in diagnostic: clipping, thermal, short circuit, overload<\/li>\n
  • Standby and mute functions for power management<\/li>\n
  • Flexiwatt-25 package with exposed pad for heatsink mounting<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Car radio and automotive head unit audio amplification<\/li>\n
    • 4-channel automotive speaker drive systems<\/li>\n
    • Marine and recreational vehicle audio systems<\/li>\n
    • Multi-room audio distribution amplifiers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TDA7388 from STMicroelectronics is a 4x41W class-AB audio power amplifier in a Flexiwatt-25 package. Designed for car radio applications, it provides four bridge-tied-load (BTL) output channels with diagnostic features and low standby current from a single 12V supply. Key Specifications Output Power 4 x 41W (max at 14.4V, 4 Ohm) Supply Voltage […]<\/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":[13,35],"tags":[],"chip_brand":[142],"class_list":["post-7182","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-switches","chip_brand-st"],"acf":{"brief_explanation":"4x41W class-AB audio amp, BTL, 12V car radio, Flexiwatt-25, diagnostics, mute\/standby","date_code":"","package_case":"Flexiwatt-25 (29.40 x 15.10 x 4.50 mm, exposed pad)","in_stock":6064,"datasheet":"https:\/\/www.st.com\/resource\/en\/datasheet\/tda7388.pdf","price":"$3.80 @ 1ku","product_introduction":"The TDA7388 from STMicroelectronics is a 4-channel class-AB audio power amplifier in a Flexiwatt-25 surface-mount package, designed primarily for car radio applications. The device provides four bridge-tied-load (BTL) output channels, each capable of delivering up to 41W into a 4 Ohm load at 14.4V supply. The BTL output configuration eliminates the need for large output coupling capacitors, reducing BOM cost and PCB area. The class-AB output stage achieves 0.05% typical THD at 1W output, providing high-quality audio reproduction. Built-in diagnostic features detect clipping, thermal warning, output short circuits, and overload conditions, and report status through a diagnostic pin. The standby function reduces current consumption to below 100uA, while the mute function silences the outputs without entering standby. The device operates from 8V to 18V, covering the full automotive battery voltage range including cold-crank and load-dump conditions. The Flexiwatt-25 package features an exposed thermal pad for direct heatsink attachment.","working_principle":"The TDA7388 uses complementary DMOS output stages in a bridge configuration. (1) Input Stage: Each channel has a differential input that accepts the audio signal. The input impedance is typically 100kOhm, compatible with standard head-unit line-level outputs. AC coupling is required at the input. (2) Voltage Amplifier: A high-gain voltage amplifier stage provides the signal amplification. The gain is internally set to approximately 26dB (20x). (3) Output Stage: Each BTL channel uses two complementary DMOS (double-diffused MOS) output transistors in a push-pull bridge configuration. The bridge drive doubles the voltage swing across the load compared to single-ended output, providing four times the output power for the same supply voltage and load impedance. (4) Diagnostic: A diagnostic comparator monitors output current and junction temperature. When an overload or fault is detected, the DIAG pin is pulled low. The device also reduces output power during thermal warning to prevent damage. (5) Standby\/Mute: The STBY pin controls the standby mode (all circuitry disabled, 100uA current). The MUTE pin silences the outputs while keeping the internal bias active for faster unmute recovery.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1-2<\/td>OUT3\/OUT4<\/td>Output<\/td>Channel 3-4 BTL outputs<\/td><\/tr>
      3-4<\/td>IN3\/IN4<\/td>Input<\/td>Channel 3-4 audio inputs<\/td><\/tr>
      5<\/td>MUTE<\/td>Input<\/td>Mute control (active low)<\/td><\/tr>
      6<\/td>STBY<\/td>Input<\/td>Standby control (active low)<\/td><\/tr>
      7<\/td>DIAG<\/td>Output<\/td>Diagnostic output (open-drain)<\/td><\/tr>
      8<\/td>GND<\/td>Ground<\/td>Ground<\/td><\/tr>
      9-10<\/td>IN1\/IN2<\/td>Input<\/td>Channel 1-2 audio inputs<\/td><\/tr>
      11-12<\/td>OUT1\/OUT2<\/td>Output<\/td>Channel 1-2 BTL outputs<\/td><\/tr>
      13-25<\/td>VS\/OUT<\/td>Power\/Output<\/td>Supply and BTL output pairs<\/td><\/tr><\/table>","application_scenarios":"
      • Car radio and automotive head unit 4-channel audio amplification at 41W per channel<\/li>
      • 4-channel automotive speaker drive systems with BTL and diagnostics<\/li>
      • Marine and recreational vehicle audio systems operating from 12V battery<\/li>
      • Multi-room audio distribution amplifiers with mute\/standby power management<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        ST<\/td>TDA7386<\/td>Flexiwatt-25<\/td>4x45W, higher power<\/td><\/tr>
        ST<\/td>TDA7850<\/td>Flexiwatt-25<\/td>4x50W, MOSFET output<\/td><\/tr>
        NXP<\/td>TDF8599C\/N2<\/td>HSOP-36<\/td>4x50W, BTL<\/td><\/tr>
        TI<\/td>TAS5414ATPHP<\/td>HTSSOP-44<\/td>4x28W, class-D<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7182","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=7182"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/7182\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=7182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=7182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=7182"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=7182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}