{"id":6621,"date":"2026-06-18T15:45:37","date_gmt":"2026-06-18T15:45:37","guid":{"rendered":"https:\/\/materialparts.com\/kia7045ap\/"},"modified":"2026-06-18T15:45:37","modified_gmt":"2026-06-18T15:45:37","slug":"kia7045ap","status":"publish","type":"post","link":"https:\/\/materialparts.com\/es\/kia7045ap\/","title":{"rendered":"KIA7045AP"},"content":{"rendered":"

Productos<\/h2>\n

The KIA7045AP from KEC (Korea Electronics) is a 3-terminal voltage detector IC designed for microcontroller reset and system voltage monitoring. It detects when the supply voltage drops below a fixed 4.5V threshold and outputs an active-low reset signal. Packaged in SOT-89, it provides reliable power-on reset and brownout detection for 5V microcontroller systems without requiring external components.<\/p>\n

Especificaciones<\/h2>\n\n\n\n\n\n\n\n\n\n
Detection Voltage<\/td>\n4.5V (fixed, \u00b12.4% accuracy)<\/td>\n<\/tr>\n
Output Type<\/td>\nActive-low (N-channel open-drain)<\/td>\n<\/tr>\n
Operating Voltage Range<\/td>\n1.0V to 10V<\/td>\n<\/tr>\n
Corriente de reposo<\/td>\n3 \u00b5A (typical)<\/td>\n<\/tr>\n
Corriente de salida<\/td>\n5 mA (sink)<\/td>\n<\/tr>\n
Detection Voltage Hysteresis<\/td>\n0.2V (typical)<\/td>\n<\/tr>\n
Temperatura de funcionamiento<\/td>\n-30\u00b0C to +80\u00b0C<\/td>\n<\/tr>\n
Paquete<\/td>\nSOT-89 (4.5\u00d72.5\u00d71.5 mm)<\/td>\n<\/tr>\n<\/table>\n

Caracter\u00edsticas<\/h2>\n
    \n
  • Fixed 4.5V detection voltage with \u00b12.4% accuracy<\/li>\n
  • Ultra-low quiescent current: 3 \u00b5A typical<\/li>\n
  • Built-in hysteresis prevents chattering near threshold<\/li>\n
  • Active-low N-channel open-drain output<\/li>\n
  • No external components required<\/li>\n
  • Compact SOT-89 surface-mount package<\/li>\n<\/ul>\n

    Aplicaciones<\/h2>\n
      \n
    • Microcontroller power-on reset and brownout detection<\/li>\n
    • 5V system voltage monitoring and reset generation<\/li>\n
    • Battery-powered device low-voltage alarm<\/li>\n
    • System power supply fault detection<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The KIA7045AP from KEC (Korea Electronics) is a 3-terminal voltage detector IC designed for microcontroller reset and system voltage monitoring. It detects when the supply voltage drops below a fixed 4.5V threshold and outputs an active-low reset signal. Packaged in SOT-89, it provides reliable power-on reset and brownout detection for 5V microcontroller systems […]<\/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":[13,20],"tags":[],"chip_brand":[298],"class_list":["post-6621","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-interface-ics","chip_brand-kec"],"acf":{"brief_explanation":"Voltage detector, 4.5V threshold, 3\u00b5A Iq, active-low reset, SOT-89","date_code":"","package_case":"SOT-89 (4.5\u00d72.5\u00d71.5 mm)","in_stock":4560,"datasheet":"https:\/\/www.kec.co.kr\/data\/datasheet\/KIA70XXA.pdf","price":"$0.05 @ 1ku","product_introduction":"The KIA7045AP from KEC is a 3-terminal voltage detector IC providing fixed 4.5V threshold detection with \u00b12.4% accuracy. Its ultra-low 3 \u00b5A quiescent current and built-in hysteresis make it ideal for generating reliable reset signals for 5V microcontroller systems. The SOT-89 package and zero external component requirement simplify PCB design for power-on reset and brownout detection applications.","working_principle":"The KIA7045AP uses an internal bandgap reference and resistor divider to set the detection voltage at 4.5V. A comparator continuously monitors the supply voltage against the reference. When VCC drops below 4.5V, the output transistor turns on, pulling the RESET pin LOW. When VCC rises above the release voltage (4.5V + hysteresis \u2248 4.7V), the output releases. The built-in hysteresis of approximately 0.2V prevents output oscillation when the supply voltage is near the threshold. The N-channel open-drain output requires an external pull-up resistor to the MCU supply rail.","pin_description":"\n
      Pin<\/th>Name<\/th>Type<\/th>Function<\/th><\/tr>\n
      1<\/td>GND<\/td>Power<\/td>Ground<\/td><\/tr>\n
      2<\/td>VOUT<\/td>Output<\/td>Reset output (active-low, open-drain)<\/td><\/tr>\n
      3<\/td>VCC<\/td>Power<\/td>Supply voltage input (monitored voltage)<\/td><\/tr>\n<\/table>","application_scenarios":"
        \n
      • 5V microcontroller power-on reset and brownout detection<\/li>\n
      • System voltage monitoring with automatic reset generation<\/li>\n
      • Battery-powered device low-voltage alarm and shutdown control<\/li>\n
      • Power supply fault detection in embedded systems<\/li>\n<\/ul>","alternative_models":"\n
        Manufacturer<\/th>Part Number<\/th>Package<\/th>Notes<\/th><\/tr>\n
        KEC<\/td>KIA7033AP<\/td>SOT-89<\/td>3.3V threshold version<\/td><\/tr>\n
        Ricoh<\/td>RN5VD45A<\/td>SOT-89<\/td>4.5V detector, CMOS output<\/td><\/tr>\n
        Torex<\/td>XC61CC4502MR<\/td>SOT-23-3<\/td>4.5V, SOT-23, smaller package<\/td><\/tr>\n
        Microchip<\/td>MCP111-450E\/TT<\/td>SOT-23-3<\/td>4.5V, open-drain, SOT-23<\/td><\/tr>\n
        Seiko<\/td>S-80845ALNB<\/td>SOT-23-3<\/td>4.5V detector, SOT-23<\/td><\/tr>\n<\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6621","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/comments?post=6621"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/posts\/6621\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/media?parent=6621"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/categories?post=6621"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/tags?post=6621"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/es\/wp-json\/wp\/v2\/chip_brand?post=6621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}