{"id":2916,"date":"2026-05-27T12:20:57","date_gmt":"2026-05-27T12:20:57","guid":{"rendered":"https:\/\/materialparts.com\/tps61040dbvr\/"},"modified":"2026-05-27T12:20:57","modified_gmt":"2026-05-27T12:20:57","slug":"tps61040dbvr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/tps61040dbvr\/","title":{"rendered":"TPS61040DBVR"},"content":{"rendered":"

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

The TPS61040DBVR from Texas Instruments is a 28V, 400mA switch boost converter in a SOT-23-5 package. Designed for LCD bias supply and white LED backlight applications, it operates from 1.8V to 6V input with up to 1MHz switching frequency, enabling compact solution size with small external components.<\/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
\u0646\u0637\u0627\u0642 \u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n1.8V to 6V<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\nUp to 28V<\/td>\n<\/tr>\n
Internal Switch Current Limit<\/td>\n400mA<\/td>\n<\/tr>\n
\u062a\u0631\u062f\u062f \u0627\u0644\u062a\u062d\u0648\u064a\u0644<\/td>\nUp to 1MHz<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n28\u03bcA typ.<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n1\u03bcA typ.<\/td>\n<\/tr>\n
Internal Soft Start<\/td>\nYes<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-23-5 (2.9 x 1.6mm)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629 \u0625\u0644\u0649 +125 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • 1.8V to 6V input voltage range<\/li>\n
  • Adjustable output up to 28V<\/li>\n
  • 400mA internal switch current limit<\/li>\n
  • Up to 1MHz switching frequency for small inductors<\/li>\n
  • 28\u03bcA typical no-load quiescent current<\/li>\n
  • 1\u03bcA shutdown current<\/li>\n
  • Internal soft start limits inrush current<\/li>\n
  • Available in SOT-23-5 and WSON packages<\/li>\n
  • Supports ceramic and tantalum output capacitors<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • White LED backlight for small to medium LCDs<\/li>\n
    • LCD bias supply generation<\/li>\n
    • 3.3V or 5V to 12V boost conversion<\/li>\n
    • Battery-powered portable equipment<\/li>\n
    • OLED display power supplies<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS61040DBVR from Texas Instruments is a 28V, 400mA switch boost converter in a SOT-23-5 package. Designed for LCD bias supply and white LED backlight applications, it operates from 1.8V to 6V input with up to 1MHz switching frequency, enabling compact solution size with small external components. Key Specifications Input Voltage Range 1.8V […]<\/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":[31,13],"tags":[],"chip_brand":[138],"class_list":["post-2916","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"28V 400mA boost converter, 1.8-6V in, 1MHz, 28\u03bcA Iq, SOT-23-5","date_code":"","package_case":"SOT-23-5 \/ DBV (2.9 x 1.6 x 1.15mm)","in_stock":9862,"datasheet":"https:\/\/www.ti.com\/product\/TPS61040","price":"$0.43 @ 1ku","product_introduction":"The TPS61040DBVR from Texas Instruments is a high-frequency boost converter dedicated for small to medium LCD bias supply and white LED backlight applications. Operating from 1.8V to 6V input, it generates output voltages up to 28V, making it ideal for dual-cell NiMH\/NiCd or single-cell Li-Ion battery powered systems. The 1MHz switching frequency allows the use of small external components, while the 28\u03bcA quiescent current and optimized control scheme enable high efficiency over the entire load range.","working_principle":"The TPS61040 uses a current-mode pulse-frequency modulation (PFM) control scheme. When the output voltage drops below the regulation threshold set by the external resistor divider, the internal N-channel MOSFET switch turns on, storing energy in the external inductor. When the switch turns off, the inductor current flows through the external Schottky diode to the output capacitor and load. The device operates in discontinuous conduction mode (DCM) at light loads for high efficiency. The internal soft start gradually increases the switch current limit during startup to prevent excessive inrush current.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>SW<\/td>Power<\/td>Switch pin (connect to inductor and Schottky diode)<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      3<\/td>FB<\/td>Input<\/td>Feedback voltage input (set output via resistor divider)<\/td><\/tr>
      4<\/td>EN<\/td>Input<\/td>Enable input (high = on, low = shutdown)<\/td><\/tr>
      5<\/td>VIN<\/td>Power<\/td>Input supply voltage (1.8V to 6V)<\/td><\/tr><\/table>","application_scenarios":"
      • White LED backlight driver for 2.8-7 inch LCD panels<\/li>
      • LCD positive and negative bias voltage generation<\/li>
      • Single-cell Li-Ion to 12V boost for portable devices<\/li>
      • OLED display power supply from battery input<\/li>
      • 3.3V to 5V or 12V step-up conversion in IoT devices<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TPS61041DBVR<\/td>SOT-23-5<\/td>250mA switch version, lower ripple<\/td><\/tr>
        TI<\/td>TPS61040YFFR<\/td>WSON-6<\/td>2x2mm WSON package version<\/td><\/tr>
        onsemi<\/td>NCP1402SN50T1<\/td>SOT-23-5<\/td>5V fixed output boost, 200mA<\/td><\/tr>
        Microchip<\/td>MCP1640D-I\/SN<\/td>SOIC-8<\/td>Low-voltage boost, 0.65V start<\/td><\/tr>
        Richtek<\/td>RT9271AGQW<\/td>SOT-23-5<\/td>25V boost for LED backlight<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2916","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=2916"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/2916\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=2916"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=2916"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=2916"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=2916"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}