{"id":3222,"date":"2026-06-01T00:06:44","date_gmt":"2026-06-01T00:06:44","guid":{"rendered":"https:\/\/materialparts.com\/mcp16311t-e-ms\/"},"modified":"2026-06-01T00:12:31","modified_gmt":"2026-06-01T00:12:31","slug":"mcp16311t-e-ms","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mcp16311t-e-ms\/","title":{"rendered":"MCP16311T-E\/MS"},"content":{"rendered":"

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

The MCP16311T-E\/MS from Microchip Technology is a 30 V, 1 A synchronous buck regulator in an 8-pin MSOP package. It features automatic PFM\/PWM mode operation for high efficiency across the entire load range, peak current mode control, and internal compensation, requiring minimal external components.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u8f93\u5165\u7535\u538b\u8303\u56f4<\/td>\n4.4 V to 30 V<\/td>\n<\/tr>\n
Output Voltage Range<\/td>\n2.0 V to 24 V (adjustable)<\/td>\n<\/tr>\n
\u8f93\u51fa\u7535\u6d41<\/td>\n1 A<\/td>\n<\/tr>\n
\u5f00\u5173\u9891\u7387<\/td>\n500 kHz<\/td>\n<\/tr>\n
Reference Voltage<\/td>\n0.8 V<\/td>\n<\/tr>\n
High-Side RDS(on)<\/td>\n300 mOhm<\/td>\n<\/tr>\n
Low-Side RDS(on)<\/td>\n170 mOhm<\/td>\n<\/tr>\n
Efficiency<\/td>\nUp to 95%<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +125\u00b0C (TJ)<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Automatic PFM\/PWM mode for high efficiency at light and heavy loads<\/li>\n
  • Integrated high-side and low-side MOSFET switches<\/li>\n
  • Internal soft-start: 300 us turn-on time<\/li>\n
  • Peak current mode control with internal compensation<\/li>\n
  • Low 3 uA shutdown current and 44 uA quiescent current in PFM mode<\/li>\n
  • Cycle-by-cycle peak current limit protection<\/li>\n
  • Undervoltage lockout at 3.6 V typical with 0.5 V hysteresis<\/li>\n
  • Thermal shutdown at 150\u00b0C with 25\u00b0C hysteresis<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Industrial and automotive distributed power systems<\/li>\n
    • Battery-powered devices and portable instruments<\/li>\n
    • Set-top boxes and consumer electronics<\/li>\n
    • USB-powered and wall adapter applications<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MCP16311T-E\/MS from Microchip Technology is a 30 V, 1 A synchronous buck regulator in an 8-pin MSOP package. It features automatic PFM\/PWM mode operation for high efficiency across the entire load range, peak current mode control, and internal compensation, requiring minimal external components. Key Specifications Input Voltage Range 4.4 V to 30 […]<\/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":[134],"class_list":["post-3222","post","type-post","status-publish","format-standard","hentry","category-dc-dc-converters","category-integrated-circuits-ics","chip_brand-microchip"],"acf":{"brief_explanation":"30V\/1A sync buck, PFM\/PWM auto-mode, 95% eff, 500kHz, MSOP-8, T&R","date_code":"","package_case":"MSOP-8 (3.0 x 3.0 x 1.10 mm)","in_stock":9100,"datasheet":"https:\/\/ww1.microchip.com\/downloads\/en\/DeviceDoc\/20005308C.pdf","price":"$1.35 @ 1ku","product_introduction":"The MCP16311T-E\/MS from Microchip Technology is a compact, high-efficiency, fixed-frequency synchronous step-down DC-DC converter that operates from input voltages up to 30 V. It integrates both high-side (300 mOhm) and low-side (170 mOhm) N-channel MOSFET switches in an 8-pin MSOP package, providing up to 1 A output current with adjustable output voltage from 2.0 V to 24 V. The device employs peak current mode control with internal compensation, simplifying the design by eliminating external compensation components. A key feature is the automatic PFM\/PWM mode switching: the device operates in PWM mode at heavier loads for low output ripple, and automatically transitions to PFM mode at light loads to maintain high efficiency. The quiescent current in PFM mode is only 44 uA, and the shutdown current is a mere 3 uA, making the device ideal for battery-powered applications. The internal 300 us soft-start limits inrush current, while cycle-by-cycle current limiting and thermal shutdown provide robust protection.","working_principle":"The MCP16311T-E\/MS operates through four key subsystems: (1) The control loop uses peak current mode control where the output voltage is sensed via the FB pin and compared to the 0.8 V internal reference. The error amplifier output controls the peak inductor current on a cycle-by-cycle basis. Internal compensation eliminates the need for external RC networks. (2) The power stage consists of integrated high-side and low-side N-channel MOSFETs driven by the BOOST capacitor circuit. The high-side switch connects the input to the inductor during the on-time, while the low-side switch provides a synchronous freewheeling path during the off-time, achieving up to 95% efficiency. (3) The mode controller automatically switches between PWM and PFM based on load current. In PWM mode at 500 kHz, the device maintains constant frequency operation. Below a load threshold, it enters PFM mode where switching pulses are skipped to reduce gate drive and switching losses, maintaining efficiency above 80% even at 1 mA load. (4) Protection circuits include UVLO at 3.6 V, cycle-by-cycle current limit, and thermal shutdown at 150\u00b0C.","pin_description":"
      Pin No.<\/td>Pin Name<\/td>Function<\/td><\/tr>
      1<\/td>VIN<\/td>Input voltage supply (4.4-30 V)<\/td><\/tr>
      2<\/td>VCC<\/td>Internal 5 V LDO output, bypass with 1 uF<\/td><\/tr>
      3<\/td>EN<\/td>Enable input (active high, internal pull-up)<\/td><\/tr>
      4<\/td>VFB<\/td>Voltage feedback input (0.8 V reference)<\/td><\/tr>
      5<\/td>GND<\/td>Power ground<\/td><\/tr>
      6<\/td>SW<\/td>Switching node (inductor connection)<\/td><\/tr>
      7<\/td>BOOST<\/td>Bootstrapped supply for high-side driver<\/td><\/tr>
      8<\/td>GND<\/td>Signal ground<\/td><\/tr><\/table>","application_scenarios":"
      • Industrial distributed power architectures converting 12 V or 24 V bus to 3.3 V or 5 V point-of-load rails at up to 1 A<\/li>
      • Battery-powered portable instruments requiring high efficiency across the full load range with PFM\/PWM auto-switching<\/li>
      • USB-powered devices converting 5 V bus to 3.3 V or 1.8 V logic rails with minimal external components<\/li>
      • Automotive auxiliary power supplies operating from 12 V battery with cold-crank immunity down to 4.4 V input<\/li><\/ul>","alternative_models":"
        Model<\/td>Brand<\/td>Vin Max<\/td>Iout<\/td>Package<\/td><\/tr>
        MCP16312T-E\/MS<\/td>Microchip<\/td>30 V<\/td>1 A<\/td>MSOP-8<\/td><\/tr>
        TPS560200DBVR<\/td>TI<\/td>17 V<\/td>500 mA<\/td>SOT-23-5<\/td><\/tr>
        LMR16006YQDDCRQ1<\/td>TI<\/td>40 V<\/td>600 mA<\/td>SOT-23-6<\/td><\/tr>
        AP63200WU-7<\/td>Diodes<\/td>32 V<\/td>2 A<\/td>TSOT-26<\/td><\/tr>
        MP1584EN-LF-Z<\/td>MPS<\/td>28 V<\/td>3 A<\/td>SOIC-8<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3222","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=3222"}],"version-history":[{"count":1,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3222\/revisions"}],"predecessor-version":[{"id":3238,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/3222\/revisions\/3238"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=3222"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=3222"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=3222"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=3222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}