{"id":7651,"date":"2026-06-26T07:07:28","date_gmt":"2026-06-26T07:07:28","guid":{"rendered":"https:\/\/ic-vendor.com\/ncp303lsn30t1g\/"},"modified":"2026-06-28T10:09:50","modified_gmt":"2026-06-28T10:09:50","slug":"ncp303lsn30t1g","status":"publish","type":"post","link":"https:\/\/ic-vendor.com\/es\/ncp303lsn30t1g\/","title":{"rendered":"NCP303LSN30T1G"},"content":{"rendered":"

Productos<\/h2>\n

The NCP303LSN30T1G from onsemi is a CMOS voltage detector with 3.0V threshold, active-low open-drain output, and 0.5uA IQ in TSOP-5.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n
Detect Voltage VDET<\/td>\n3.0V<\/td>\n<\/tr>\n
Accuracy<\/td>\n+\/-1.5%<\/td>\n<\/tr>\n
Supply Current<\/td>\n0.5 uA typical<\/td>\n<\/tr>\n
Output Type<\/td>\nN-ch open drain (active low)<\/td>\n<\/tr>\n
Hysteresis<\/td>\nVDET x 3-6%<\/td>\n<\/tr>\n
Operating Voltage<\/td>\n0.7V to 10V<\/td>\n<\/tr>\n
Paquete<\/td>\nTSOP-5 (SOT-23-5)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • +\/-1.5% detection accuracy<\/li>\n
  • 0.5uA ultra-low current consumption<\/li>\n
  • Active-low open-drain reset output<\/li>\n
  • Built-in hysteresis prevents chattering<\/li>\n
  • No external components needed<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • MCU reset and power-on reset<\/li>\n
    • Battery voltage monitoring<\/li>\n
    • System brownout detection<\/li>\n
    • Power supply supervision<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The NCP303LSN30T1G from onsemi is a CMOS voltage detector with 3.0V threshold, active-low open-drain output, and 0.5uA IQ in TSOP-5. Key Specifications Detect Voltage VDET 3.0V Accuracy +\/-1.5% Supply Current 0.5 uA typical Output Type N-ch open drain (active low) Hysteresis VDET x 3-6% Operating Voltage 0.7V to 10V Package TSOP-5 (SOT-23-5) Operating […]<\/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":[],"chip_brand":[144],"class_list":["post-7651","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-on"],"acf":{"brief_explanation":"CMOS voltage detector, 3.0V, +\/-1.5%, 0.5uA, TSOP-5","date_code":"","package_case":"TSOP-5 SOT-23-5 (2.90 x 1.60 x 1.00 mm)","in_stock":30000,"datasheet":"https:\/\/www.onsemi.com\/pdf\/datasheet\/ncp303-d.pdf","price":"$0.28 @ 1ku","product_introduction":"The NCP303LSN30T1G from onsemi is a CMOS voltage detector IC with 3.0V threshold in TSOP-5 (SOT-23-5) package. The LS suffix denotes active-low open-drain output. The 3.0V threshold (N30) is ideal for monitoring 3.3V power rails, detecting when voltage drops below the 3.0V threshold. The +\/-1.5% detection accuracy ensures reliable reset thresholds. The 0.5uA supply current is among the lowest available, making it ideal for battery-powered always-on monitoring. Built-in hysteresis (3-6% of VDET) prevents output oscillation.","working_principle":"The NCP303LSN30T1G operates as a CMOS voltage detector. (1) The input voltage is compared against an internal precision reference. When VDD drops below 3.0V, the output transistor turns off and the open-drain output goes high (via external pull-up), asserting the active-low reset signal. (2) The built-in hysteresis ensures that VDD must rise by 3-6% above 3.0V before the output de-asserts. This prevents chattering when VDD hovers near the threshold, which could cause erratic MCU reset behavior. (3) The 0.5uA supply current allows the detector to remain powered continuously without significantly impacting battery life. The operating voltage range of 0.7V to 10V covers most system rails. The detector is fully specified down to 0.7V, meaning the reset output remains asserted even when the supply collapses to very low levels.","pin_description":"
      Pin<\/th>Name<\/th>Description<\/th><\/tr>
      1<\/td>VOUT<\/td>Reset output; active-low open-drain, asserts low when VCC drops below threshold (3.0 V typ)<\/td><\/tr>
      2<\/td>GND<\/td>Ground reference<\/td><\/tr>
      3<\/td>VCC<\/td>Supply voltage (1.0 V to 5.5 V); internal pull-up to VCC through 50 kOhm resistor<\/td><\/tr><\/table>

      Package: TSOT-23-3. Threshold voltage: 3.0 V (suffix 30). Supply current: 0.5 uA typical. Reset output remains valid for VCC down to 1.0 V.<\/p>","application_scenarios":"

      • MCU Brownout Reset:<\/strong> Holding 3.3 V microcontroller in reset when supply drops below 3.0 V threshold, preventing erratic code execution and flash corruption<\/li>
      • Battery Voltage Monitoring:<\/strong> Ultra-low 0.5 uA supply current enables continuous battery voltage surveillance in always-on energy-harvesting systems<\/li>
      • System Power-On Reset:<\/strong> Generating a clean reset pulse during power-up without external RC components; 240 ms typical timeout when used with external capacitor on VCC<\/li>
      • PLC and Industrial Logic Reset:<\/strong> Monitoring 3.3 V logic rails in programmable logic controllers with built-in hysteresis preventing chattering on slow voltage ramps<\/li>
      • Portable Medical Devices:<\/strong> Ensuring safe microcontroller shutdown in battery-powered blood glucose meters and pulse oximeters when battery voltage decays below threshold<\/li><\/ul>","alternative_models":"\n
        Model<\/th>Manufacturer<\/th>Key Difference<\/th>Package<\/th>Threshold<\/th><\/tr>\n
        NCP303LSN33T1G<\/td>onsemi<\/td>3.3V threshold version for standard 3.3V MCU power rails with same 0.5uA Iq<\/td>TSOT-23-3<\/td>3.3V<\/td><\/tr>\n
        NCP303LSN25T1G<\/td>onsemi<\/td>2.5V threshold version for lower-voltage 2.5V logic supply monitoring<\/td>TSOT-23-3<\/td>2.5V<\/td><\/tr>\n
        BD48K30G-TR<\/td>ROHM<\/td>3.0V threshold with CMOS push-pull output and SSOP5 package, 2.4uA Iq<\/td>SSOP-5<\/td>3.0V<\/td><\/tr>\n
        TPS3809K33DBVR<\/td>TI<\/td>3.3V threshold supervisor in SOT-23-5 with 2.5uA Iq and manual reset input<\/td>SOT-23-5<\/td>3.3V<\/td><\/tr>\n
        MCP131T-300I\/TT<\/td>Microchip<\/td>3.0V threshold with open-drain reset output and 1uA Iq in tiny SOT-23-3<\/td>SOT-23-3<\/td>3.0V<\/td><\/tr>\n
        MAX809TTRG<\/td>onsemi<\/td>3.08V threshold active-low reset in SOT-23-3, 250mA reset output sink current<\/td>SOT-23-3<\/td>3.08V<\/td><\/tr>\n<\/table>\n

        The NCP303LSN30T1G is an ultra-low 0.5uA voltage detector with 3.0V threshold and active-low open-drain output. Other threshold voltages in the NCP303 family range from 0.9V to 5.0V. For push-pull output, use BD48K series from ROHM. For additional features like manual reset, consider TPS3809.<\/p>"},"_links":{"self":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/7651","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/comments?post=7651"}],"version-history":[{"count":0,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/posts\/7651\/revisions"}],"wp:attachment":[{"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/media?parent=7651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/categories?post=7651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/tags?post=7651"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/ic-vendor.com\/es\/wp-json\/wp\/v2\/chip_brand?post=7651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}