{"id":10508,"date":"2026-07-20T04:28:02","date_gmt":"2026-07-20T04:28:02","guid":{"rendered":"https:\/\/ic-vendor.com\/ncp302lsn28t1g\/"},"modified":"2026-07-20T04:28:02","modified_gmt":"2026-07-20T04:28:02","slug":"ncp302lsn28t1g","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/ar\/ncp302lsn28t1g\/","title":{"rendered":"NCP302LSN28T1G"},"content":{"rendered":"

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

The onsemi NCP302LSN28T1G is a voltage detector \/ supervisor IC with a fixed detection threshold of 2.8V, housed in a TSOP-5 (SOT-23-5) package. It provides a precision voltage monitoring function with active-low open-drain output, featuring 1.5% threshold accuracy, low quiescent current of 0.5 \u00b5A, and built-in delay circuit. The device is designed for microprocessor reset generation, battery monitoring, and power supply supervision.<\/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
\u0627\u0644\u0648\u0638\u064a\u0641\u0629<\/td>\nVoltage Detector \/ Supervisor<\/td>\n<\/tr>\n
Detection Threshold<\/td>\n2.8 V (Fixed)<\/td>\n<\/tr>\n
Threshold Accuracy<\/td>\n\u00b11.5%<\/td>\n<\/tr>\n
\u0646\u0648\u0639 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\nActive Low, Open Drain (N-channel)<\/td>\n<\/tr>\n
Quiescent Current (Typ)<\/td>\n0.5 \u00b5A<\/td>\n<\/tr>\n
Built-in Delay<\/td>\nYes (fixed internal delay)<\/td>\n<\/tr>\n
Operating Voltage Range<\/td>\n0.7V to 10V<\/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 +85 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nTSOP-5 (SOT-23-5)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Precision detection threshold of 2.8V with \u00b11.5% accuracy<\/li>\n
  • Ultra-low quiescent current of 0.5 \u00b5A for battery-powered applications<\/li>\n
  • Active-low open-drain output compatible with various logic families<\/li>\n
  • Built-in fixed delay eliminates external timing components<\/li>\n
  • Wide operating voltage range from 0.7V to 10V<\/li>\n
  • Hysteresis prevents output oscillation near threshold<\/li>\n
  • Compact TSOP-5 package for space-constrained designs<\/li>\n
  • Pb-Free, RoHS compliant<\/li>\n<\/ul>\n

    \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
      \n
    • Microprocessor and microcontroller reset generation<\/li>\n
    • Battery voltage monitoring in portable devices<\/li>\n
    • Power supply undervoltage detection<\/li>\n
    • System power-on reset circuits<\/li>\n
    • Battery backup switchover control<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The onsemi NCP302LSN28T1G is a voltage detector \/ supervisor IC with a fixed detection threshold of 2.8V, housed in a TSOP-5 (SOT-23-5) package. It provides a precision voltage monitoring function with active-low open-drain output, featuring 1.5% threshold accuracy, low quiescent current of 0.5 \u00b5A, and built-in delay circuit. The device is designed for […]<\/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":[1812],"chip_brand":[144],"class_list":["post-10508","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","tag-ncp302lsn28t1g","chip_brand-on"],"acf":{"brief_explanation":"Voltage detector, 2.8V threshold, \u00b11.5% accuracy, 0.5\u00b5A Iq, active-low OD output, TSOP-5","date_code":"","package_case":"TSOP-5 (SOT-23-5) 2.9 x 1.6 x 1.1 mm","in_stock":4982,"datasheet":"https:\/\/www.onsemi.com\/pub\/Collateral\/NCP302-D.PDF","price":"$0.128 @ 3ku","product_introduction":"The onsemi NCP302LSN28T1G is a precision voltage detector IC designed for microprocessor reset generation, battery voltage monitoring, and power supply supervision. The device monitors the supply voltage and asserts an active-low open-drain output when the voltage drops below the fixed detection threshold of 2.8V (\u00b11.5% accuracy). When the supply voltage rises above the threshold plus hysteresis, the output is released after a built-in fixed delay, ensuring stable system reset timing without external components. The ultra-low quiescent current of 0.5 \u00b5A makes it ideal for battery-powered applications where always-on monitoring is required. Housed in a compact TSOP-5 (SOT-23-5) package, the device operates from 0.7V to 10V and includes internal hysteresis to prevent output oscillation near the threshold voltage.","working_principle":"The NCP302LSN28T1G uses an internal precision voltage reference and comparator to monitor the supply voltage (VDD). The comparator compares VDD against the fixed detection threshold (2.8V). When VDD falls below the threshold, the comparator output triggers the output driver, pulling the open-drain N-channel MOSFET output low (active state). When VDD rises above the threshold plus the hysteresis voltage, the comparator de-asserts, but the output remains low for the duration of the built-in delay timer, ensuring a clean reset signal. The delay is generated by an internal oscillator and counter, eliminating the need for an external delay capacitor. The hysteresis (typically 50 mV) ensures that small noise fluctuations near the threshold do not cause output chattering. The open-drain output requires an external pull-up resistor (typically 10 k\u03a9 to 100 k\u03a9) to the desired logic voltage, enabling level shifting between the monitored supply and the logic interface.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>VDD<\/td>Power<\/td>Supply voltage input (0.7V to 10V) \u2014 also the monitored voltage<\/td><\/tr>\n
      2<\/td>GND<\/td>Power<\/td>Ground reference<\/td><\/tr>\n
      3<\/td>NC<\/td>NC<\/td>No internal connection<\/td><\/tr>\n
      4<\/td>OUT<\/td>Output<\/td>Detection output (active low, open drain) \u2014 requires external pull-up resistor<\/td><\/tr>\n
      5<\/td>NC<\/td>NC<\/td>No internal connection<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • Microcontroller power-on reset generation in embedded systems<\/li>\n
      • Li-ion battery undervoltage detection in portable devices<\/li>\n
      • 3.3V power supply supervision in industrial control boards<\/li>\n
      • Battery backup switchover trigger in RTC circuits<\/li>\n
      • System brownout detection in automotive electronics<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        onsemi<\/td>NCP302LSN30T1G<\/td>TSOP-5<\/td>3.0V threshold variant<\/td><\/tr>\n
        onsemi<\/td>NCP302LSN33T1G<\/td>TSOP-5<\/td>3.3V threshold variant<\/td><\/tr>\n
        Texas Instruments<\/td>TLV803EA28DBZR<\/td>SOT-23-3<\/td>2.8V voltage supervisor<\/td><\/tr>\n
        Maxim Integrated<\/td>MAX809STR28T<\/td>SOT-23-3<\/td>2.8V reset IC, 3-pin<\/td><\/tr>\n
        onsemi<\/td>NCP303LSN28T1G<\/td>TSOP-5<\/td>Active-high output variant<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10508","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=10508"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/posts\/10508\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/media?parent=10508"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/categories?post=10508"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/tags?post=10508"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=10508"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}