{"id":2506,"date":"2026-05-22T03:28:46","date_gmt":"2026-05-22T03:28:46","guid":{"rendered":"https:\/\/materialparts.com\/lm386n-4-nopb\/"},"modified":"2026-05-22T03:28:46","modified_gmt":"2026-05-22T03:28:46","slug":"lm386n-4-nopb","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/lm386n-4-nopb\/","title":{"rendered":"LM386N-4\/NOPB"},"content":{"rendered":"

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

The LM386N-4\/NOPB is a low voltage audio power amplifier manufactured by Texas Instruments. It is designed for battery-powered consumer audio applications, delivering 1W output into an 8-ohm load from a 16V supply. The device operates over a wide supply voltage range of 5V to 18V with very low quiescent current drain, making it ideal for portable and battery-operated audio systems.<\/p>\n

\u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629<\/h2>\n\n\n\n\n\n\n\n\n\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u0645\u062f\u0627\u062f<\/td>\n5V to 18V<\/td>\n<\/tr>\n
Output Power<\/td>\n1W (Vdd=16V, RL=8ohm)<\/td>\n<\/tr>\n
Voltage Gain<\/td>\n20 to 200 (adjustable)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n4mA typical<\/td>\n<\/tr>\n
Input Impedance<\/td>\n50kohm<\/td>\n<\/tr>\n
Bandwidth<\/td>\n300kHz at gain=20<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n0C to 70C<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nPDIP-8<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Battery operation with minimum 5V supply<\/li>\n
  • Externally adjustable gain from 20 to 200<\/li>\n
  • Very low quiescent current drain (4mA)<\/li>\n
  • Ground-referenced input<\/li>\n
  • Self-centering output quiescent voltage<\/li>\n
  • Low distortion at output power<\/li>\n
  • Minimal external components required<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • AM\/FM radio amplifiers<\/li>\n
    • Portable audio devices and speakers<\/li>\n
    • Intercom and walkie-talkie systems<\/li>\n
    • TV sound systems<\/li>\n
    • Ultrasonic drivers and small servo drivers<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM386N-4\/NOPB is a low voltage audio power amplifier manufactured by Texas Instruments. It is designed for battery-powered consumer audio applications, delivering 1W output into an 8-ohm load from a 16V supply. The device operates over a wide supply voltage range of 5V to 18V with very low quiescent current drain, making it […]<\/p>\n","protected":false},"author":2,"featured_media":2708,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,13],"tags":[],"chip_brand":[138],"class_list":["post-2506","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analog-linear-ics","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"1W Low Voltage Audio Power Amplifier, 5-18V supply, gain 20-200, PDIP-8","date_code":"","package_case":"PDIP-8 (9.7 x 6.35 x 4.57 mm)","in_stock":6377,"datasheet":"https:\/\/www.ti.com\/product\/LM386","price":"$1.96 @ 1ku","product_introduction":"The LM386N-4\/NOPB is a low voltage audio power amplifier produced by Texas Instruments. It is optimized for battery-powered consumer audio applications requiring 1W output power. Operating from a single 5V to 18V supply, the device features adjustable voltage gain from 20 to 200 using external resistors and a capacitor. The very low quiescent current of 4mA and minimal external component count make it a popular choice for portable audio amplification in consumer electronics.","working_principle":"The LM386 operates as a class AB audio amplifier with an internally set gain of 20 (26dB). The gain can be increased to 200 (46dB) by connecting a capacitor between pins 1 and 8. The internal circuitry consists of a differential input pair, gain-setting network, and a push-pull output stage. The output is self-centering at half the supply voltage, eliminating the need for output coupling capacitors in many applications. The ground-referenced input allows direct coupling from signal sources.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>GAIN<\/td>Control<\/td>Gain adjust (connect capacitor to pin 8 for higher gain)<\/td><\/tr>
      2<\/td>IN-<\/td>Input<\/td>Inverting input<\/td><\/tr>
      3<\/td>IN+<\/td>Input<\/td>Non-inverting input<\/td><\/tr>
      4<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      5<\/td>Vout<\/td>Output<\/td>Audio output<\/td><\/tr>
      6<\/td>Vs<\/td>Power<\/td>Supply voltage (5-18V)<\/td><\/tr>
      7<\/td>BYPASS<\/td>Control<\/td>Bypass capacitor for ripple rejection<\/td><\/tr>
      8<\/td>GAIN<\/td>Control<\/td>Gain adjust (connect capacitor to pin 1)<\/td><\/tr><\/table>","application_scenarios":"
      • Portable speaker and radio audio amplification<\/li>
      • Intercom and two-way communication systems<\/li>
      • TV and monitor sound output stages<\/li>
      • Ultrasonic transducer drivers<\/li>
      • Small motor and servo control drivers<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        Texas Instruments<\/td>LM386N-3\/NOPB<\/td>PDIP-8<\/td>0.5W version, 4-12V supply<\/td><\/tr>
        Texas Instruments<\/td>LM386M-1\/NOPB<\/td>SOIC-8<\/td>325mW, SMD version<\/td><\/tr>
        onsemi<\/td>MC34119<\/td>SOIC-8<\/td>Low voltage audio amp<\/td><\/tr>
        ROHM<\/td>BA4560<\/td>SIP-8<\/td>Dual audio op-amp alternative<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2506","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=2506"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2506\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media\/2708"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=2506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=2506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=2506"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=2506"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}