{"id":7540,"date":"2026-06-26T04:21:38","date_gmt":"2026-06-26T04:21:38","guid":{"rendered":"https:\/\/materialparts.com\/ncv8518bpdr2g\/"},"modified":"2026-06-26T04:21:38","modified_gmt":"2026-06-26T04:21:38","slug":"ncv8518bpdr2g","status":"publish","type":"post","link":"https:\/\/materialparts.com\/ar\/ncv8518bpdr2g\/","title":{"rendered":"NCV8518BPDR2G"},"content":{"rendered":"

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

The NCV8518BPDR2G from onsemi is an automotive AEC-qualified 5V low-dropout linear regulator with integrated watchdog, wakeup, reset, and enable functions in SOIC-8 EP package.<\/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\n
\u062c\u0647\u062f \u0627\u0644\u062e\u0631\u062c<\/td>\n5.0V fixed (+\/-2%)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u0625\u062e\u0631\u0627\u062c<\/td>\n250 mA<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u062a\u0633\u0631\u0628<\/td>\n450 mV typical @ 150mA<\/td>\n<\/tr>\n
\u062c\u0647\u062f \u0627\u0644\u0625\u062f\u062e\u0627\u0644<\/td>\nUp to 45V (transient)<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0627\u0644\u062a\u0647\u062f\u0626\u0629<\/td>\n100 uA typical @ 250mA<\/td>\n<\/tr>\n
\u062a\u064a\u0627\u0631 \u0625\u064a\u0642\u0627\u0641 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\nLess than 1 uA<\/td>\n<\/tr>\n
Control Functions<\/td>\nEnable, Watchdog, Wakeup, Reset<\/td>\n<\/tr>\n
Protection<\/td>\nThermal shutdown, short circuit<\/td>\n<\/tr>\n
AEC Qualified<\/td>\nYes<\/td>\n<\/tr>\n
\u0627\u0644\u062d\u0632\u0645\u0629<\/td>\nSOIC-8 EP (PDR2G suffix)<\/td>\n<\/tr>\n
\u062f\u0631\u062c\u0629 \u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u062a\u0634\u063a\u064a\u0644<\/td>\n-40 to +150 C (TJ)<\/td>\n<\/tr>\n<\/table>\n

\u0627\u0644\u0645\u064a\u0632\u0627\u062a<\/h2>\n
    \n
  • Integrated watchdog, wakeup, and reset for MCU control<\/li>\n
  • 45V transient withstand for automotive battery environment<\/li>\n
  • 100uA low quiescent current for always-on systems<\/li>\n
  • Enable pin for logic-level shutdown control<\/li>\n

AEC qualified for automotive applications<\/li>\n<\/ul>\n

\u0627\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a<\/h2>\n
    \n
  • Automotive ECU 5V power supply<\/li>\n
  • Tire pressure monitoring system MCU power<\/li>\n
  • Battery-powered automotive electronics<\/li>\n
  • Automotive body controller standby power<\/li>\n
  • Industrial 5V logic supply with watchdog<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

    Product Overview The NCV8518BPDR2G from onsemi is an automotive AEC-qualified 5V low-dropout linear regulator with integrated watchdog, wakeup, reset, and enable functions in SOIC-8 EP package. Key Specifications Output Voltage 5.0V fixed (+\/-2%) Output Current 250 mA Dropout Voltage 450 mV typical @ 150mA Input Voltage Up to 45V (transient) Quiescent Current 100 uA typical […]<\/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":[13,32],"tags":[],"chip_brand":[182],"class_list":["post-7540","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-low-dropout-regulators-ldo","chip_brand-onsemi"],"acf":{"brief_explanation":"5V 250mA auto LDO, watchdog\/wakeup\/reset, SOIC-8 EP","date_code":"","package_case":"SOIC-8 EP (4.9 x 3.9 x 1.5 mm, exposed pad)","in_stock":3456,"datasheet":"https:\/\/www.onsemi.com\/pdf\/datasheet\/ncv8518b-d.pdf","price":"$1.80 @ 1ku","product_introduction":"The NCV8518BPDR2G from onsemi is a precision micropower 5V low-dropout linear regulator with integrated microprocessor control functions including watchdog timer, wakeup output, reset output, and enable input. The device features 450mV typical dropout voltage at 150mA, 100uA typical quiescent current, and withstands 45V input transients for automotive environments. The watchdog and wakeup functions enable microprocessor sleep-mode management for reduced battery drain. The reset output is asserted during power-up, output undervoltage, or watchdog timeout. The NCV prefix indicates automotive qualification with AEC compliance and PPAP capability. The PDR2G suffix denotes SOIC-8 with exposed pad and tape and reel packaging.","working_principle":"The NCV8518BPDR2G operates as an automotive LDO regulator with MCU supervisory functions. (1) The regulator uses a PNP pass transistor to achieve low dropout voltage (450mV typical at 150mA). The output voltage is set to 5.0V +\/-2% by an internal bandgap reference and resistor divider. The 45V transient withstand is achieved through a high-voltage PNP pass element that can survive brief overvoltage events common in automotive battery systems. (2) The wakeup function generates a periodic square wave output from VOUT with 50% duty cycle at a frequency set by the external RDELAY resistor. This signal interrupts the MCU from sleep mode. The MCU responds with a falling-edge pulse on the WDI (watchdog input) pin. If the watchdog signal is not received within one wakeup period, the reset output is asserted. (3) The reset output is asserted low during four conditions: power-up (VOUT below regulation), output undervoltage, watchdog timeout, and input undervoltage. After the fault condition clears, the reset remains low for a delay period set by RDELAY, then goes high. The enable pin provides logic-level shutdown control with less than 1uA shutdown current.","pin_description":"
    Pin<\/th>Name<\/th>Function<\/th><\/tr>
    1<\/td>DELAY<\/td>Timing resistor for wakeup\/reset<\/td><\/tr>
    2<\/td>GND<\/td>Ground<\/td><\/tr>
    3<\/td>WDI<\/td>Watchdog input from MCU<\/td><\/tr>
    4<\/td>ENABLE<\/td>Enable input (active high)<\/td><\/tr>
    5<\/td>RESET<\/td>Reset output (active low, CMOS)<\/td><\/tr>
    6<\/td>WAKEUP<\/td>Wakeup output to MCU<\/td><\/tr>
    7<\/td>VIN<\/td>Input supply voltage<\/td><\/tr>
    8<\/td>VOUT<\/td>5V regulated output<\/td><\/tr>
    EP<\/td>GND<\/td>Exposed pad (thermal\/GND)<\/td><\/tr><\/table>","application_scenarios":"
    • Automotive ECU 5V power supply with watchdog MCU supervision<\/li>
    • Tire pressure monitoring system MCU power with wakeup function<\/li>
    • Battery-powered automotive electronics with 100uA quiescent current<\/li>
    • Automotive body controller standby power with enable shutdown<\/li>
    • Industrial 5V logic supply with integrated watchdog and reset<\/li><\/ul>","alternative_models":"
      Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
      NCV8518CPDR2G<\/td>onsemi<\/td>Updated version, lower Iq<\/td><\/tr>
      NCV8518BPWR2G<\/td>onsemi<\/td>Same, SOIC-16 WB package<\/td><\/tr>
      TLF50251ELVXUMA1<\/td>Infineon<\/td>5V, 250mA, LDO, watchdog<\/td><\/tr>
      TLE4274GV33<\/td>Infineon<\/td>3.3V, 200mA, auto LDO, reset<\/td><\/tr>
      UA78M05IDCYR<\/td>TI<\/td>5V, 500mA, no watchdog<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7540","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/comments?post=7540"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/posts\/7540\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/media?parent=7540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/categories?post=7540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/tags?post=7540"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/ar\/wp-json\/wp\/v2\/chip_brand?post=7540"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}