{"id":10649,"date":"2026-07-20T09:17:13","date_gmt":"2026-07-20T09:17:13","guid":{"rendered":"https:\/\/ic-vendor.com\/lm3880mfx-1ae-nopb\/"},"modified":"2026-07-20T09:17:13","modified_gmt":"2026-07-20T09:17:13","slug":"lm3880mfx-1ae-nopb","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/lm3880mfx-1ae-nopb\/","title":{"rendered":"LM3880MFX-1AE\/NOPB"},"content":{"rendered":"

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

The LM3880MFX-1AE\/NOPB is a 3-rail simple power sequencer from Texas Instruments, packaged in a 6-pin SOT-23 (DBV) package. It provides controlled power-up and power-down sequencing of three voltage rails through open-drain output flags with fixed timing delays. The -1AE suffix defines the specific timing and sequence configuration, enabling easy cascading for up to 9 rails.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
\u529f\u80fd<\/td>\n3-Rail Power Sequencer<\/td>\n<\/tr>\n
Sequenced Rails<\/td>\n3<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n2.7V to 5.5V<\/td>\n<\/tr>\n
IQ<\/td>\n25\u03bcA (typical)<\/td>\n<\/tr>\n
\u8f93\u51fa\u7c7b\u578b<\/td>\nOpen-Drain<\/td>\n<\/tr>\n
Sequence Configuration<\/td>\n-1AE (factory set)<\/td>\n<\/tr>\n
Cascadable<\/td>\nUp to 9 rails (3 devices)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\n6-pin SOT-23 (2.9 \u00d7 1.6 mm)<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40\u00b0C to +125\u00b0C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Simple 3-rail power sequencing with single enable input<\/li>\n
  • Cascadable up to 9 rails using 3 devices<\/li>\n
  • Independent power-up and power-down sequence control<\/li>\n
  • Ultra-low quiescent current of 25\u03bcA<\/li>\n
  • Open-drain outputs pull up to different voltage rails<\/li>\n
  • EPROM-based timing configuration<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • FPGA power supply sequencing<\/li>\n
    • Multi-rail processor power management<\/li>\n
    • DSP and SoC system power control<\/li>\n
    • Industrial control module sequencing<\/li>\n
    • Telecom card power management<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM3880MFX-1AE\/NOPB is a 3-rail simple power sequencer from Texas Instruments, packaged in a 6-pin SOT-23 (DBV) package. It provides controlled power-up and power-down sequencing of three voltage rails through open-drain output flags with fixed timing delays. The -1AE suffix defines the specific timing and sequence configuration, enabling easy cascading for up to […]<\/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":[13,29],"tags":[1990],"chip_brand":[138],"class_list":["post-10649","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","tag-lm3880mfx-1ae-nopb","chip_brand-ti"],"acf":{"brief_explanation":"3-rail power sequencer, 2.7-5.5V, -1AE timing, open-drain, SOT-23-6","date_code":"","package_case":"SOT-23-6 (2.9 \u00d7 1.6 \u00d7 1.0 mm)","in_stock":5340,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm3880.pdf","price":"$0.58 @ 1ku","product_introduction":"The LM3880 is a simple 3-rail power sequencer that provides controlled power-up and power-down sequencing of multiple voltage rails. When enabled, three open-drain output flags are sequentially released with fixed time delays, allowing connected power supplies to start in order. During power-down, the outputs follow the reverse sequence to avoid latch-up conditions. The -1AE suffix defines a specific timing and sequence configuration set at the factory via EPROM. The open-drain outputs can be pulled up to different voltage rails (up to VDD + 0.3V), providing flexibility in interfacing with various enable logic levels. Multiple LM3880 devices can be cascaded to sequence up to 9 rails.","working_principle":"The LM3880 operates as a state machine controlling three open-drain output flags (FLAG1, FLAG2, FLAG3). When the EN pin is driven high, the device begins the power-up sequence: FLAG1 releases first after the initial delay, then FLAG2 and FLAG3 release sequentially at their respective fixed timing intervals. Each open-drain output, when released, allows the external pull-up resistor to drive the connected power supply enable pin high. When EN goes low, the power-down sequence executes in reverse order (FLAG3, then FLAG2, then FLAG1) to ensure proper supply discharge and prevent latch-up. The timing delays are stored in internal EPROM, which can be custom-configured by TI for non-standard requirements. The precision enable threshold ensures reliable triggering from logic or resistor-divided voltage sources.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VDD<\/td>Power<\/td>Supply voltage (2.7-5.5V)<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      3<\/td>EN<\/td>Input<\/td>Enable \u2014 precision threshold, high starts sequence<\/td><\/tr>
      4<\/td>FLAG3<\/td>Output<\/td>Open-drain output flag 3 (last in power-up)<\/td><\/tr>
      5<\/td>FLAG2<\/td>Output<\/td>Open-drain output flag 2<\/td><\/tr>
      6<\/td>FLAG1<\/td>Output<\/td>Open-drain output flag 1 (first in power-up)<\/td><\/tr><\/table>","application_scenarios":"
      • Sequencing 3.3V, 1.8V, and 1.0V rails for FPGA power<\/li>
      • Multi-voltage DSP power-up\/down control in telecom boards<\/li>
      • SoC core, I\/O, and PLL rail sequencing<\/li>
      • Industrial controller power supply order management<\/li>
      • Cascaded 9-rail sequencing for complex processor systems<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>LM3880MFX-3AE\/NOPB<\/td>SOT-23-6<\/td>Different timing configuration<\/td><\/tr>
        TI<\/td>TPS386600<\/td>VQFN-16<\/td>Quad supervisor with sequencing<\/td><\/tr>
        ADI<\/td>ADM1186<\/td>QSOP-16<\/td>4-channel sequencer\/monitor<\/td><\/tr>
        Maxim<\/td>MAX16029<\/td>TDFN-10<\/td>Quad sequencer with timeout<\/td><\/tr>
        Renesas<\/td>ISL22316<\/td>QFN-16<\/td>6-channel sequencer<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10649","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=10649"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10649\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10649"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}