{"id":10700,"date":"2026-07-20T10:11:59","date_gmt":"2026-07-20T10:11:59","guid":{"rendered":"https:\/\/ic-vendor.com\/lm3880mf-1ae-nopb\/"},"modified":"2026-07-20T10:11:59","modified_gmt":"2026-07-20T10:11:59","slug":"lm3880mf-1ae-nopb","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/lm3880mf-1ae-nopb\/","title":{"rendered":"LM3880MF-1AE\/NOPB"},"content":{"rendered":"

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

The LM3880MF-1AE\/NOPB is a three-rail simple power sequencer from Texas Instruments, packaged in a 6-pin SOT-23 (DBV) package. It provides open-drain sequenced output flags with fixed time delays for controlling the power-up and power-down order of multiple voltage rails, preventing latch-up conditions and excessive inrush currents in FPGA, DSP, and multi-rail systems.<\/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\n
\u0627\u0644\u0648\u0638\u064a\u0641\u0629<\/td>\n3-Rail Power Sequencer<\/td>\n<\/tr>\n
Sequenced Outputs<\/td>\n3 (open-drain flags)<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\n2.7V to 5.5V<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n25 \u00b5A (typical)<\/td>\n<\/tr>\n
Time Delay Options<\/td>\n2, 10, 16, 30, 60, 120 ms (fixed per part number)<\/td>\n<\/tr>\n
\u0646\u0648\u0639 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\nOpen-drain<\/td>\n<\/tr>\n
Cascadable<\/td>\nYes \u2014 up to 3 devices for 9 rails<\/td>\n<\/tr>\n
Sequence Logic<\/td>\nPower-up and reverse power-down<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOT-23-6 (2.9 \u00d7 1.6 mm)<\/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
  • Three open-drain sequenced output flags for EN\/PG control<\/li>\n
  • Fixed time delay between each rail (device-specific)<\/li>\n
  • Power-up sequence: OUT1\u2192OUT2\u2192OUT3; reverse order power-down<\/li>\n
  • Cascadable: chain up to 3 devices for 9-rail sequencing<\/li>\n
  • Precision enable input for system-level control<\/li>\n
  • Ultra-low 25 \u00b5A quiescent current<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • FPGA power-up sequencing (VCCINT, VCCAUX, VCCIO)<\/li>\n
    • DSP and processor multi-rail power sequencing<\/li>\n
    • Multi-voltage LDO and DC-DC enable control<\/li>\n
    • Preventing latch-up in mixed-voltage ASIC designs<\/li>\n
    • Server platform VRM power-on sequencing<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The LM3880MF-1AE\/NOPB is a three-rail simple power sequencer from Texas Instruments, packaged in a 6-pin SOT-23 (DBV) package. It provides open-drain sequenced output flags with fixed time delays for controlling the power-up and power-down order of multiple voltage rails, preventing latch-up conditions and excessive inrush currents in FPGA, DSP, and multi-rail systems. Key […]<\/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":[2041],"chip_brand":[138],"class_list":["post-10700","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","tag-lm3880mf-1ae-nopb","chip_brand-ti"],"acf":{"brief_explanation":"3-rail power sequencer, open-drain outputs, fixed delay, SOT-23-6, cascadable","date_code":"","package_case":"SOT-23-6 (2.9 \u00d7 1.6 \u00d7 1.0 mm)","in_stock":14449,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/lm3880.pdf","price":"$0.72 @ 1ku","product_introduction":"The LM3880 is a simple three-rail power sequencer that controls the power-up and power-down order of multiple voltage rails in FPGA, DSP, and multi-rail systems. It provides three open-drain output flags that sequentially assert low during power-up (OUT1, then OUT2, then OUT3) with a fixed time delay between each, and de-assert in reverse order during power-down. This sequencing prevents latch-up conditions, reduces inrush current, and ensures that I\/O rails are powered before or after core rails as required by the device manufacturer. The device is cascadable \u2014 up to three LM3880 devices can be chained to sequence up to nine rails. The fixed delay is determined by the part number suffix and ranges from 2 ms to 120 ms.","working_principle":"The LM3880 operates as a state machine that controls three open-drain output flags in a timed sequence. When the enable (EN) pin is driven high and the input voltage (VDD) exceeds the UVLO threshold, the internal controller begins the power-up sequence. OUT1 pulls low first, signaling the first rail's enable. After the programmed delay (set by the part number suffix), OUT2 pulls low, enabling the second rail. After another delay, OUT3 pulls low, enabling the third rail. When EN is driven low or VDD drops below UVLO, the power-down sequence begins in reverse: OUT3 releases first (goes high-impedance), then after the delay OUT2, then OUT1. This reverse-order shutdown ensures that I\/O rails remain powered while the core rail discharges, preventing latch-up. The open-drain outputs can directly drive the EN pins of LDOs or DC-DC converters, or drive external P-channel MOSFETs for load-switch control.","pin_description":"
    • ASIC design power-up order enforcement to prevent latch-up<\/td><\/tr>
    • Portable equipment multi-LDO enable control with defined power-on order<\/td><\/tr><\/ul>","alternative_models":"
      • Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>VDD<\/td>Power<\/td>Input supply (2.7-5.5V)<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      3<\/td>EN<\/td>Input<\/td>Enable \u2014 drive high to start power-up sequence<\/td><\/tr>
      4<\/td>OUT3<\/td>Output<\/td>Sequenced output 3 \u2014 open-drain (last to assert)<\/td><\/tr>
      5<\/td>OUT2<\/td>Output<\/td>Sequenced output 2 \u2014 open-drain (second to assert)<\/td><\/tr>
      6<\/td>OUT1<\/td>Output<\/td>Sequenced output 1 \u2014 open-drain (first to assert)<\/td><\/tr><\/table>","application_scenarios":"
      • Intel\/AMD FPGA power sequencing: VCCINT\u2192VCCAUX\u2192VCCIO with controlled delay<\/li>
      • Multi-core DSP rail sequencing: core\u2192DDR\u2192I\/O with reverse shutdown<\/li><\/tr>
      Three-cascode 9-rail server VRM sequencing with staggered enable<\/td><\/tr>
      Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
      TI<\/td>TPS386000RGPR<\/td>VQFN-16<\/td>Quad voltage supervisor with sequencer<\/td><\/tr>
      TI<\/td>LM3880MF-3AE\/NOPB<\/td>SOT-23-6<\/td>Same device, different delay time suffix<\/td><\/tr>
      ADI<\/td>ADM1186<\/td>QSOP-16<\/td>Quad voltage sequencer\/monitor<\/td><\/tr>
      Maxim<\/td>MAX6820<\/td>TDFN-10<\/td>4-channel sequencer, adjustable timing<\/td><\/tr>
      Renesas<\/td>ISL88714<\/td>TQFN-24<\/td>8-rail programmable sequencer<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10700","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/comments?post=10700"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10700\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10700"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10700"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10700"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10700"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}