{"id":10665,"date":"2026-07-20T09:42:42","date_gmt":"2026-07-20T09:42:42","guid":{"rendered":"https:\/\/ic-vendor.com\/tps3808g18dbvt\/"},"modified":"2026-07-20T09:42:42","modified_gmt":"2026-07-20T09:42:42","slug":"tps3808g18dbvt","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/zh\/tps3808g18dbvt\/","title":{"rendered":"TPS3808G18DBVT"},"content":{"rendered":"

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

The TPS3808G18DBVT from Texas Instruments is a low-quiescent-current voltage supervisor in SOT-23-6 package, monitoring a 1.8V rail with 1.67V threshold. It features 0.5% threshold accuracy, programmable reset delay (1.25 ms to 10 s), manual reset input, and only 2.4 uA typical quiescent current, making it ideal for battery-powered and precision voltage monitoring applications.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
Monitored Rail<\/td>\n1.8V nominal<\/td>\n<\/tr>\n
Threshold Voltage<\/td>\n1.67V (typical)<\/td>\n<\/tr>\n
Threshold Accuracy<\/td>\n0.5% (typical)<\/td>\n<\/tr>\n
\u9759\u6001\u7535\u6d41<\/td>\n2.4 uA (typical)<\/td>\n<\/tr>\n
Reset Delay<\/td>\n1.25 ms to 10 s (programmable via CT)<\/td>\n<\/tr>\n
Manual Reset<\/td>\nYes (MR pin, active low)<\/td>\n<\/tr>\n
Reset Output<\/td>\nActive-low, open-drain<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n1.8V – 6.5V<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23-6 (DBV) 2.9×2.8 mm<\/td>\n<\/tr>\n
Temperature<\/td>\n-40\u81f3+125\u6444\u6c0f\u5ea6<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • 0.5% threshold accuracy for precise voltage monitoring<\/li>\n
  • Ultra-low 2.4 uA quiescent current extends battery life<\/li>\n
  • Flexible reset delay: 20 ms (CT open), 300 ms (CT to VDD), or 1.25 ms-10 s (CT capacitor)<\/li>\n

Manual reset input<\/td>\nMR pin for system-initiated reset<\/td>\n<\/tr>\n
  • Small SOT-23-6 package for space-constrained designs<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • DSP and microcontroller power-on reset and brownout detection<\/li>\n
    • Notebook and desktop computer voltage supervision<\/li>\n
    • Battery-powered portable device power monitoring<\/li>\n
    • FPGA and ASIC core voltage monitoring<\/li>\n
    • Industrial control system power supervision<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The TPS3808G18DBVT from Texas Instruments is a low-quiescent-current voltage supervisor in SOT-23-6 package, monitoring a 1.8V rail with 1.67V threshold. It features 0.5% threshold accuracy, programmable reset delay (1.25 ms to 10 s), manual reset input, and only 2.4 uA typical quiescent current, making it ideal for battery-powered and precision voltage monitoring applications. […]<\/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":[2006],"chip_brand":[138],"class_list":["post-10665","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","tag-tps3808g18dbvt","chip_brand-ti"],"acf":{"brief_explanation":"1.8V voltage supervisor, 1.67V threshold, 0.5% accuracy, 2.4uA Iq, programmable delay, SOT-23-6","date_code":"","package_case":"SOT-23-6 (DBV) 2.9x2.8 mm","in_stock":4637,"datasheet":"https:\/\/www.ti.com\/lit\/ds\/symlink\/tps3808.pdf","price":"$0.649 @ 1ku","product_introduction":"The TPS3808G18 is a member of the TPS3808 family of low-quiescent-current supervisory circuits from Texas Instruments, specifically designed to monitor 1.8V rails with a 1.67V threshold. The device asserts an active-low, open-drain RESET output when the SENSE voltage drops below the threshold or when the MR pin is pulled low. The RESET output remains low for a user-adjustable delay time after the fault condition clears. With 0.5% threshold accuracy, 2.4 uA typical quiescent current, and programmable delay from 1.25 ms to 10 seconds, it provides precise and flexible voltage supervision for battery-powered and precision systems.","working_principle":"The TPS3808G18 monitors the SENSE pin voltage against a precision 1.67V internal reference. When SENSE drops below the threshold, the open-drain RESET output is asserted low. The reset delay is configured via the CT pin: floating CT gives 20 ms, connecting CT to VDD through a resistor gives 300 ms, and connecting CT to an external capacitor allows adjustment from 1.25 ms to 10 seconds. The MR (manual reset) pin provides an additional active-low reset trigger. When SENSE rises above the threshold and MR is deasserted, an internal timer counts the programmed delay before releasing RESET. The device uses a precision bandgap reference to achieve 0.5% threshold accuracy for VIT <= 3.3V.","pin_description":"
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>
      1<\/td>RESET<\/td>Output<\/td>Active-low reset output (open-drain)<\/td><\/tr>
      2<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>
      3<\/td>MR<\/td>Input<\/td>Manual reset (active low)<\/td><\/tr>
      4<\/td>CT<\/td>Input<\/td>Delay programming pin<\/td><\/tr>
      5<\/td>SENSE<\/td>Input<\/td>Voltage sense input<\/td><\/tr>
      6<\/td>VDD<\/td>Power<\/td>Supply voltage (1.8-6.5V)<\/td><\/tr><\/table>","application_scenarios":"
      • MCU\/DSP brownout detection: monitor 1.8V core rail during power transients<\/li>
      • Battery-powered devices: 2.4 uA Iq minimizes drain on standby battery<\/li>
      • FPGA power sequencing: programmable delay ensures stable voltage before releasing reset<\/li>
      • Portable electronics: manual reset for user-initiated system restart<\/li>
      • Industrial controllers: precision monitoring of 1.8V logic rails<\/li><\/ul>","alternative_models":"
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>
        TI<\/td>TPS3808G33DBVR<\/td>SOT-23-6<\/td>3.3V threshold variant (3.07V)<\/td><\/tr>
        TI<\/td>TPS3808G18DRVR<\/td>WSON-6<\/td>Same function, WSON package<\/td><\/tr>
        TI<\/td>TPS3808G01DBVR<\/td>SOT-23-6<\/td>Adjustable threshold (0.405V)<\/td><\/tr>
        TI<\/td>TPS3808E1802DBVR<\/td>SOT-23-6<\/td>600 nA ultra-low Iq upgrade<\/td><\/tr>
        ADI<\/td>ADM803ZAKS<\/td>SC-70<\/td>1.8V supervisor, fixed delay<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10665","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=10665"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/posts\/10665\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/media?parent=10665"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/categories?post=10665"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/tags?post=10665"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=10665"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}