{"id":6618,"date":"2026-06-18T15:45:33","date_gmt":"2026-06-18T15:45:33","guid":{"rendered":"https:\/\/materialparts.com\/tps5430dda-2\/"},"modified":"2026-06-18T15:45:33","modified_gmt":"2026-06-18T15:45:33","slug":"tps5430dda-2","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/tps5430dda-2\/","title":{"rendered":"TPS5430DDA"},"content":{"rendered":"

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

The TPS5430DDA from Texas Instruments is a 3A, wide-input-range step-down (buck) converter with an integrated 110 m\u03a9 high-side N-channel MOSFET. Operating from 5.5V to 36V input and providing adjustable output down to 1.22V at up to 95% efficiency, it is designed for space-constrained power supply applications. Packaged in a thermally enhanced 8-pin SOIC with PowerPAD for efficient heat dissipation.<\/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\n\n\n\n
\u0627\u0644\u0637\u0648\u0628\u0648\u0644\u0648\u062c\u064a\u0627<\/td>\nBuck (Step-Down)<\/td>\n<\/tr>\n
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n5.5V to 36V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n3A continuous, 4A peak<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\n1.22V to 31V (adjustable)<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\n500 kHz (fixed)<\/td>\n<\/tr>\n
Integrated MOSFET RDS(ON)<\/td>\n110 m\u03a9 (high-side)<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 95%<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n3 mA (typical, operating)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n15 \u00b5A (typical via ENA)<\/td>\n<\/tr>\n
\u0648\u0636\u0639 \u0627\u0644\u062a\u062d\u0643\u0645<\/td>\nVoltage-mode with feed-forward<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40\u00b0C to +125\u00b0C (junction)<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-8 with PowerPAD (DDA)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Wide 5.5V to 36V input voltage range<\/li>\n
  • Adjustable output down to 1.22V with 1.5% initial accuracy<\/li>\n
  • Internal compensation reduces external component count<\/li>\n
  • Fixed 500 kHz switching frequency for compact filter design<\/li>\n
  • Input voltage feed-forward improves line transient response<\/li>\n
  • Internal slow-start limits inrush current<\/li>\n
  • Active-high enable (ENA) pin for low standby current<\/li>\n
  • Overcurrent limiting, overvoltage protection, and thermal shutdown<\/li>\n
  • Undervoltage lockout (UVLO) prevents start-up below 5.5V<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • 12V\/24V distributed power system step-down conversion<\/li>\n
    • Consumer electronics: set-top boxes, DVD, LCD displays<\/li>\n
    • Industrial and automotive audio power supply<\/li>\n
    • Battery charger and high-power LED driver<\/li>\n
    • Point-of-load regulation from 24V bus<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS5430DDA from Texas Instruments is a 3A, wide-input-range step-down (buck) converter with an integrated 110 m\u03a9 high-side N-channel MOSFET. Operating from 5.5V to 36V input and providing adjustable output down to 1.22V at up to 95% efficiency, it is designed for space-constrained power supply applications. Packaged in a thermally enhanced 8-pin SOIC […]<\/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":[13,32],"tags":[],"chip_brand":[138],"class_list":["post-6618","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-ti"],"acf":{"brief_explanation":"3A Buck converter, 5.5-36V in, adj 1.22-31V out, 500kHz, SOIC-8 EP","date_code":"","package_case":"SOIC-8 with PowerPAD (4.9\u00d76.0 mm, DDA)","in_stock":6840,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps5430.pdf","price":"$1.85 @ 1ku","product_introduction":"The TPS5430DDA from Texas Instruments is a 3A step-down buck converter integrating a 110 m\u03a9 high-side N-channel MOSFET in a thermally enhanced SOIC-8 PowerPAD package. With a wide 5.5V to 36V input range and adjustable output from 1.22V to 31V, it delivers up to 95% efficiency at 500 kHz fixed switching frequency. Internal compensation, slow-start, and comprehensive protection (OCP, OVP, thermal shutdown) minimize external components and simplify design.","working_principle":"The TPS5430DDA uses voltage-mode control with input voltage feed-forward to maintain stable operation across wide input variations. The internal oscillator generates a fixed 500 kHz sawtooth ramp. The error amplifier compares the divided output voltage (VSENSE pin) with a 1.22V internal reference, and the PWM comparator modulates the duty cycle of the integrated high-side NMOS switch. The feed-forward path adjusts the ramp amplitude proportionally to input voltage, providing immediate duty cycle correction for line transients. An internal bootstrap diode charges the BOOT capacitor during each off-cycle to provide gate drive above VIN for the high-side MOSFET. The PH pin connects to the external inductor and catch diode to form the buck output stage.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>BOOT<\/td>I\/O<\/td>Bootstrap capacitor for high-side gate drive (connect 0.01\u00b5F to PH)<\/td><\/tr>\n
      2<\/td>NC<\/td>\u2014<\/td>No internal connection<\/td><\/tr>\n
      3<\/td>NC<\/td>\u2014<\/td>No internal connection<\/td><\/tr>\n
      4<\/td>VSENSE<\/td>Input<\/td>Feedback voltage sense (connect to output voltage divider)<\/td><\/tr>\n
      5<\/td>ENA<\/td>Input<\/td>Enable (active-high, float to enable; pull below 0.5V to disable)<\/td><\/tr>\n
      6<\/td>GND<\/td>Power<\/td>Ground (connect to PowerPAD)<\/td><\/tr>\n
      7<\/td>VIN<\/td>Power<\/td>Input supply voltage (5.5-36V, bypass with low-ESR ceramic cap)<\/td><\/tr>\n
      8<\/td>PH<\/td>Output<\/td>Phase node (connect to external inductor and catch diode)<\/td><\/tr>\n
      Pad<\/td>PowerPAD<\/td>Power<\/td>Thermal pad (connect to GND plane for heat dissipation)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • 12V\/24V to 5V or 3.3V step-down conversion in distributed power systems<\/li>\n
      • Consumer electronics including set-top boxes, DVD players, and LCD displays<\/li>\n
      • Industrial and automotive audio power supply regulation<\/li>\n
      • Battery charger and high-power LED driver power stage<\/li>\n
      • Point-of-load regulation from 24V bus rails<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        TI<\/td>TPS5431DDA<\/td>SOIC-8 EP<\/td>5.5-23V input, lower voltage version<\/td><\/tr>\n
        TI<\/td>TPS5450DDA<\/td>SOIC-8 EP<\/td>5A output, higher current version<\/td><\/tr>\n
        Monolithic Power<\/td>MP1584EN-LF-Z<\/td>SOIC-8 EP<\/td>4.5-28V, 4A, pin-compatible alternative<\/td><\/tr>\n
        TI<\/td>LM2678-5.0<\/td>TO-263-7<\/td>5A, 5V fixed, simpler but larger package<\/td><\/tr>\n
        Richtek<\/td>RT8290AZSP<\/td>SOP-8 EP<\/td>4.5-24V, 3A, similar application<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6618","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=6618"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/6618\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=6618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=6618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=6618"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=6618"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}