{"id":3358,"date":"2026-06-03T04:18:08","date_gmt":"2026-06-03T04:18:08","guid":{"rendered":"https:\/\/materialparts.com\/lm60440aqrpkrq1\/"},"modified":"2026-06-03T04:18:08","modified_gmt":"2026-06-03T04:18:08","slug":"lm60440aqrpkrq1","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/lm60440aqrpkrq1\/","title":{"rendered":"LM60440AQRPKRQ1"},"content":{"rendered":"

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

The LM60440AQRPKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified, 3.8V to 36V, 4A synchronous step-down converter in a WQFN-13 (RPK) package with wettable flanks. It features peak current-mode control, 400kHz switching frequency, and 25uA quiescent current for automotive power applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n3.8V to 36V<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\n1V to 24V (adjustable)<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n4A maximum<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n400kHz<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n25uA typical<\/td>\n<\/tr>\n
Efficiency<\/td>\n>95% peak<\/td>\n<\/tr>\n
PFM Efficiency<\/td>\n90% at 10mA, 12V to 5V<\/td>\n<\/tr>\n
AEC-Q100 Grade<\/td>\nGrade 1 (-40 to 125 C TA)<\/td>\n<\/tr>\n
Junction Temperature<\/td>\n-40 to 150 C<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nWQFN-13 (RPK, 3x2mm) with wettable flanks<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • AEC-Q100 Grade 1 qualified<\/li>\n
  • 3.8V to 36V wide input range<\/li>\n
  • 4A output current<\/li>\n
  • Ultra-small WQFN-13 (3x2mm) with wettable flanks<\/li>\n
  • Peak current-mode control<\/li>\n
  • 25uA ultra-low quiescent current<\/li>\n
  • +\/-1.5% total output accuracy<\/li>\n
  • 400kHz switching frequency<\/li>\n
  • Auto PFM at light load<\/li>\n
  • Power good output<\/li>\n
  • Frequency foldback at light load<\/li>\n
  • Functional safety documentation available<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Automotive infotainment power<\/li>\n
    • ADAS camera power<\/li>\n
    • Automotive body electronics and lighting<\/li>\n
    • USB charging in automotive<\/li>\n
    • Industrial 12V\/24V step-down<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM60440AQRPKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified, 3.8V to 36V, 4A synchronous step-down converter in a WQFN-13 (RPK) package with wettable flanks. It features peak current-mode control, 400kHz switching frequency, and 25uA quiescent current for automotive power applications. Key Specifications Input Voltage Range 3.8V to 36V Output Voltage Range […]<\/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-3358","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-ti"],"acf":{"brief_explanation":"Automotive 4A 36V sync buck, AEC-Q100 G1, WQFN-13 wettable flanks","date_code":"","package_case":"WQFN-13 \/ RPK (3.0 x 2.0 x 0.9 mm, wettable flanks, exposed pad)","in_stock":2100,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm60440-q1.pdf","price":"$1.95 @ 1ku","product_introduction":"The LM60440AQRPKRQ1 from TI is an AEC-Q100 Grade 1 automotive 4A synchronous buck converter with 3.8-36V input in ultra-small WQFN-13 (3x2mm) with wettable flanks for automated optical inspection. Peak current-mode control with 25uA quiescent current and 400kHz switching. +\/-1.5% output accuracy with auto PFM for >90% light-load efficiency. Functional safety documentation available.","working_principle":"Uses peak current-mode control where the inductor peak current is controlled on a cycle-by-cycle basis. The error amplifier sets the current reference, and the high-side MOSFET turns off when the sensed current reaches this threshold. At light loads, the device automatically folds back the switching frequency and enters PFM (pulse-frequency modulation) mode to maintain efficiency down to 10mA. The WQFN package with wettable flanks enables automated optical inspection (AOI) of solder joints in automotive manufacturing.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>BOOT<\/td>Power<\/td>Bootstrap capacitor for high-side driver<\/td><\/tr>
      2<\/td>VIN<\/td>Power<\/td>Input supply (3.8-36V)<\/td><\/tr>
      3<\/td>EN<\/td>Input<\/td>Enable control<\/td><\/tr>
      4<\/td>FB<\/td>Input<\/td>Feedback voltage (1V reference)<\/td><\/tr>
      5<\/td>VCC<\/td>Output<\/td>Internal LDO output (bypass cap)<\/td><\/tr>
      6<\/td>AGND<\/td>Ground<\/td>Analog ground<\/td><\/tr>
      7<\/td>PG<\/td>Output<\/td>Power good indicator<\/td><\/tr>
      8<\/td>PGND<\/td>Ground<\/td>Power ground<\/td><\/tr>
      9-11<\/td>SW<\/td>Output<\/td>Switch node (inductor)<\/td><\/tr>
      12-13<\/td>PGND<\/td>Ground<\/td>Power ground<\/td><\/tr><\/table>","application_scenarios":"
      • 12V automotive battery to 5V\/3.3V ECU power<\/li>
      • ADAS camera module 3.3V POL from 12V<\/li>
      • 24V truck battery to 5V step-down<\/li>
      • Automotive USB charging port 5V supply<\/li>
      • Industrial 24V bus to logic rail conversion<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM60430AQRPKRQ1<\/td>WQFN-13<\/td>3A version, pin compatible<\/td><\/tr>
        TI<\/td>LM60440GRPKRQ1<\/td>WQFN-13<\/td>Standard QFN (no wettable flanks)<\/td><\/tr>
        TI<\/td>TPS62130AQRGTTQ1<\/td>VQFN-16<\/td>3A, 17V, similar automotive<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3358","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=3358"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3358\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=3358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=3358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=3358"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=3358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}