{"id":10731,"date":"2026-07-20T11:13:18","date_gmt":"2026-07-20T11:13:18","guid":{"rendered":"https:\/\/ic-vendor.com\/tps40009dgqr\/"},"modified":"2026-07-20T11:13:18","modified_gmt":"2026-07-20T11:13:18","slug":"tps40009dgqr","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/tps40009dgqr\/","title":{"rendered":"TPS40009DGQR"},"content":{"rendered":"

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

The TPS40009DGQR from Texas Instruments is a low-input-voltage synchronous buck controller designed for high-efficiency DC-DC conversion from input voltages as low as 2.25 V. Packaged in a 10-pin MSOP (DGS) package, it integrates a 600-kHz fixed-frequency voltage-mode controller with adaptive gate drivers for N-channel MOSFETs, targeting point-of-load applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n2.25 V to 5.5 V<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\n0.7 V to 5.5 V<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n600 kHz fixed<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n0.7 V (1%)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to 85 degC<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nMSOP-10 (3.0 x 3.0 mm)<\/td>\n<\/tr>\n<\/table>\n

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  • Low VIN operation down to 2.25 V<\/li>\n
  • 600-kHz fixed-frequency voltage-mode control<\/li>\n
  • Adaptive anti-cross-conduction gate drive<\/li>\n
  • Programmable current limit using MOSFET RDS(on) sensing<\/li>\n
  • Internal soft-start with controlled inrush current<\/li>\n
  • Power-good output indicator<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Point-of-load DC-DC converters<\/li>\n
    • Embedded processor core voltage regulation<\/li>\n
    • DSP and FPGA power supplies<\/li>\n
    • Low-voltage bus converters<\/li>\n
    • Telecommunications and networking equipment<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS40009DGQR from Texas Instruments is a low-input-voltage synchronous buck controller designed for high-efficiency DC-DC conversion from input voltages as low as 2.25 V. Packaged in a 10-pin MSOP (DGS) package, it integrates a 600-kHz fixed-frequency voltage-mode controller with adaptive gate drivers for N-channel MOSFETs, targeting point-of-load applications. Key Specifications Input Voltage Range […]<\/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":[31,13],"tags":[2071],"chip_brand":[138],"class_list":["post-10731","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","tag-tps40009dgqr","chip_brand-ti"],"acf":{"brief_explanation":"Low-VIN synchronous buck controller, 2.25-5.5V input, 600kHz, MSOP-10","date_code":"","package_case":"MSOP-10 (3.0 x 3.0 x 0.9 mm)","in_stock":8218,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps40009.pdf","price":"$1.85 @ 1ku","product_introduction":"The TPS40009DGQR is a low-input-voltage synchronous buck controller from Texas Instruments designed for high-efficiency DC-DC conversion from input voltages as low as 2.25 V. It integrates a 600-kHz fixed-frequency voltage-mode PWM controller with adaptive gate drivers for external N-channel MOSFETs. The 0.7-V reference voltage with 1% accuracy supports low output voltages required by modern processors and FPGAs. The device features programmable current limit using MOSFET RDS(on) sensing, eliminating the need for an external current-sense resistor.","working_principle":"The TPS40009DGQR employs voltage-mode PWM control with a 600-kHz fixed-frequency oscillator. The error amplifier compares the divided output voltage against the 0.7-V reference and generates a control signal for the PWM comparator. The PWM modulator produces duty-cycle pulses that drive the high-side and low-side N-channel MOSFETs through adaptive gate drivers with anti-cross-conduction logic. Current limiting is achieved by sensing the voltage drop across the low-side MOSFET RDS(on) during the off-time. The internal soft-start gradually increases the reference voltage to limit inrush current during startup.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>BST<\/td>Power<\/td>Bootstrap capacitor connection<\/td><\/tr>
      2<\/td>SW<\/td>Power<\/td>Switch node<\/td><\/tr>
      3<\/td>ILIM<\/td>Input<\/td>Current limit threshold set<\/td><\/tr>
      4<\/td>COMP<\/td>Output<\/td>Error amplifier output \/ compensation<\/td><\/tr>
      5<\/td>FB<\/td>Input<\/td>Feedback voltage input<\/td><\/tr>
      6<\/td>SS<\/td>Input<\/td>Soft-start programming<\/td><\/tr>
      7<\/td>PGOOD<\/td>Output<\/td>Power-good open-drain output<\/td><\/tr>
      8<\/td>VDD<\/td>Power<\/td>Input supply voltage<\/td><\/tr>
      9<\/td>LDRV<\/td>Output<\/td>Low-side gate drive<\/td><\/tr>
      10<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr><\/table>","application_scenarios":"
      • Point-of-load converters in computing platforms<\/li>
      • Embedded processor core and I\/O voltage regulation<\/li>
      • DSP and FPGA low-voltage power supplies<\/li>
      • Low-voltage bus converters in telecom equipment<\/li>
      • Networking and storage system POL regulators<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TPS40007DGQR<\/td>MSOP-10<\/td>Lower switching frequency variant<\/td><\/tr>
        TI<\/td>TPS40011DGQR<\/td>MSOP-10<\/td>Higher frequency option<\/td><\/tr>
        TI<\/td>TPS5430DDAR<\/td>SOIC-8<\/td>3A integrated buck, wider VIN<\/td><\/tr>
        TI<\/td>TPS5450DDAR<\/td>SOIC-8<\/td>5A integrated buck converter<\/td><\/tr>
        Monolithic Power<\/td>MP2105DK-LF<\/td>QFN-10<\/td>Similar buck controller<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10731","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/comments?post=10731"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10731\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10731"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10731"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}