{"id":9551,"date":"2026-07-03T08:47:38","date_gmt":"2026-07-03T08:47:38","guid":{"rendered":"https:\/\/materialparts.com\/mp8049sdu-lf-z\/"},"modified":"2026-07-03T08:47:38","modified_gmt":"2026-07-03T08:47:38","slug":"mp8049sdu-lf-z","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mp8049sdu-lf-z\/","title":{"rendered":"MP8049SDU-LF-Z"},"content":{"rendered":"

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

The MP8049SDU-LF-Z from Monolithic Power Systems is a quad power half-bridge driver IC capable of delivering up to 5.5 A per channel from a 5-26 V supply. Configurable as dual full-bridge or quad half-bridge, it serves as the output stage for Class-D audio amplifiers and motor drives with integrated overcurrent, overtemperature, and undervoltage protection.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u7535\u6e90\u7535\u538b<\/td>\n5 – 26 V<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n5.5 A (peak per channel)<\/td>\n<\/tr>\n
\u914d\u7f6e<\/td>\nDual full-bridge or quad half-bridge<\/td>\n<\/tr>\n
On-Resistance<\/td>\n0.14 Ohm (high-side + low-side)<\/td>\n<\/tr>\n
BTL Output Power<\/td>\n37W\/ch @ 24V, 8 Ohm<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\nUp to 1 MHz<\/td>\n<\/tr>\n
Dead Time<\/td>\n10 ns<\/td>\n<\/tr>\n
Protection<\/td>\nOCP, OTP, UVP, Short Circuit<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nQFN-40 (5 x 5 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to +125 deg C (TJ)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Quad half-bridge or dual full-bridge configuration<\/li>\n
  • 5.5 A peak output current per channel<\/li>\n
  • Ultra-low RDS(on): 0.14 Ohm total bridge<\/li>\n
  • Integrated overcurrent, thermal, and undervoltage protection<\/li>\n
  • Up to 1 MHz switching frequency<\/li>\n
  • 37W per channel BTL output at 24V\/8 Ohm<\/li>\n
  • Fault output with diagnostic flags (FLT2B, FLT3B)<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Class-D audio amplifier output stage<\/li>\n
    • Flat-panel TV and home theater audio<\/li>\n
    • Brushed DC motor dual H-bridge drive<\/li>\n
    • D-class amplifier for DVD receivers<\/li>\n
    • Solenoid and relay driver arrays<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MP8049SDU-LF-Z from Monolithic Power Systems is a quad power half-bridge driver IC capable of delivering up to 5.5 A per channel from a 5-26 V supply. Configurable as dual full-bridge or quad half-bridge, it serves as the output stage for Class-D audio amplifiers and motor drives with integrated overcurrent, overtemperature, and undervoltage […]<\/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":[36,13],"tags":[793],"chip_brand":[179],"class_list":["post-9551","post","type-post","status-publish","format-standard","hentry","category-gate-driver-ics","category-integrated-circuits-ics","tag-mp8049sdu-lf-z","chip_brand-gigadevice"],"acf":{"brief_explanation":"Quad half-bridge driver, 26V, 5.5A, QFN-40, MPS","date_code":"","package_case":"QFN-40 (5 x 5 x 0.9 mm)","in_stock":7071,"datasheet":"https:\/\/www.monolithicpower.com\/en\/products\/motor-drivers-and-motor-controllers\/brushed-dc-solenoid-drivers\/mp8049s.html","price":"$3.80 @ 1ku","product_introduction":"The MP8049SDU-LF-Z from Monolithic Power Systems is a quad power half-bridge driver IC in a 5 x 5 mm QFN-40 package. Operating from 5-26 V with 5.5 A peak output current and 0.14 Ohm total on-resistance, it delivers up to 37W per channel into 8 Ohm loads in BTL configuration. The device integrates all four power half-bridges with bootstrap drivers, and features comprehensive protection including cycle-by-cycle overcurrent limit (5.5A), overtemperature shutdown (160 deg C), undervoltage lockout, and short-circuit detection. Configurable as dual full-bridge or quad half-bridge, it serves Class-D audio amplifiers and motor drive applications.","working_principle":"The MP8049 integrates four N-channel MOSFET half-bridges with gate drive and protection logic on a single die. Each half-bridge consists of a high-side NMOS switch and a low-side NMOS switch. The bootstrap circuit (external capacitor on BST pins) provides gate drive voltage above the supply rail for the high-side NMOS. A 10 ns dead time between high-side and low-side conduction prevents shoot-through current. The overcurrent protection monitors each MOSFET's current and shuts down the corresponding bridge channel for approximately 30 us when the 5.5A threshold is exceeded. The thermal protection disables all outputs when the junction temperature exceeds 160 deg C, automatically recovering when it drops below 125 deg C.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>BST1<\/td>Power<\/td>Bootstrap cap for bridge 1<\/td><\/tr>\n
      5<\/td>SHDNB<\/td>Input<\/td>Shutdown (active low)<\/td><\/tr>\n
      9<\/td>STBYB<\/td>Input<\/td>Standby (active low, refreshes bootstrap)<\/td><\/tr>\n
      15<\/td>FAULTB<\/td>Output<\/td>Fault output (open-drain, active low)<\/td><\/tr>\n
      20<\/td>IN1<\/td>Input<\/td>Logic input for half-bridge 1<\/td><\/tr>\n
      21<\/td>IN2<\/td>Input<\/td>Logic input for half-bridge 2<\/td><\/tr>\n
      30<\/td>VDD<\/td>Power<\/td>Supply voltage 5-26V<\/td><\/tr>\n
      40<\/td>BST2<\/td>Power<\/td>Bootstrap cap for bridge 2<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Class-D audio amplifier output stage<\/li>\n
      • Flat-panel TV and home theater audio<\/li>\n
      • Brushed DC motor dual H-bridge drive<\/li>\n
      • D-class amplifier for DVD receivers<\/li>\n
      • Solenoid and relay driver arrays<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        MPS<\/td>MP7720<\/td>TSSOP-28<\/td>Dual full-bridge, 20W, audio class-D<\/td><\/tr>\n
        TI<\/td>TAS5707<\/td>HTQFP-48<\/td>Digital input class-D audio amp<\/td><\/tr>\n
        Infineon<\/td>MA5332MS<\/td>VQFN-48<\/td>2x65W class-D audio driver<\/td><\/tr>\n
        MPS<\/td>MP8047<\/td>QFN-40<\/td>Similar spec, different channel count<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=9551"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/9551\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=9551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=9551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=9551"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=9551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}